Academic literature on the topic 'Choice reversal'
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Journal articles on the topic "Choice reversal"
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Zhang, Nian, Yiyuan Zhang, and Xia Luo. "Travel decision reversals paradox of competitive metro lines: The Equate-to-differentiate Theory Interpretation." MATEC Web of Conferences 308 (2020): 03007. http://dx.doi.org/10.1051/matecconf/202030803007.
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Based on the equate-to-differentiate theory, this paper studies the paradox of preference reversal and choice reversal in traffic decision-making in parallel sections of Chengdu Metro Line No.2 and No.4. Travel decision reversals: preference reversals phenomenon (PRP) and choice reversals phenomenon (CRP) are found in the travel investigation for Chengdu Metro Line No.2 and No.4, and the reversals cannot be well explained by random error. Through experimental design of cautious control, the existence of these phenomena is confirmed. This paper establishes the judgment dimension system of option attributes, and designs three groups of psychological experiment in certain, uncertain and risk scenarios. Data analysis shows that PRP and CRP can be explained by the equate-to-differentiate interpretation. The phenomena of reversal are not due to the fact that preference and choice really reverses, but the variable strategic process. The equate-to-differentiate interpretation shows good consistency in the experiments and can predict and explain the preference and choice reversal of travel decision. At last, a comparative analysis which compares the results of the two models of the decision field theory is made and finally the conclusion is obtained.
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Gelinas, Luke. "Frames, Choice-Reversal, and Consent." Ethical Theory and Moral Practice 18, no. 5 (March 14, 2015): 1049–57. http://dx.doi.org/10.1007/s10677-015-9581-9.
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Tsetsos, Konstantinos, Marius Usher, and Nick Chater. "Preference reversal in multiattribute choice." Psychological Review 117, no. 4 (2010): 1275–91. http://dx.doi.org/10.1037/a0020580.
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Zhou, Yan-Bang, Qiang Li, and Hong-Zhi Liu. "Visual attention and time preference reversals." Judgment and Decision Making 16, no. 4 (July 2021): 1010–38. http://dx.doi.org/10.1017/s1930297500008068.
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AbstractTime preference reversal refers to systematic inconsistencies between preferences and bids for intertemporal options. From the two eye-tracking studies (N1 = 60, N2 = 110), we examined the underlying mechanisms of time preference reversal. We replicated the reversal effect in which individuals facing a pair of intertemporal options choose the smaller-sooner option but assign a higher value to the larger-later one. Results revealed that the mean fixation duration and the proportion of gaze time on the outcome attribute varied across the choice and bid tasks. In addition, time preference reversals correlated with individual differences in maximizing tendencies. Findings support the contingent weighting hypothesis and strategy compatibility hypothesis and allow for improved theoretical understanding of the potential mechanisms and processes involved in time preference reversals.
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Neeman, Itay. "Necessary use of induction in a reversal." Journal of Symbolic Logic 76, no. 2 (June 2011): 561–74. http://dx.doi.org/10.2178/jsl/1305810764.
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AbstractJullien's indecomposability theorem (INDEC) states that if a scattered countable linear order is indecomposable, then it is either indecomposable to the left, or indecomposable to the right. The theorem was shown by Montalbán to be a theorem of hyperarithmetic analysis, and then, in the base system RCA0 plus induction, it was shown by Neeman to have strength strictly between weak choice and comprehension. We prove in this paper that induction is needed for the reversal of INDEC. that is for the proof that INDEC implies weak choice. This is in contrast with the typical situation in reverse mathematics, where reversals can usually be refined to use only induction.
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Moen, Espen R., and Christian Riis. "Policy Reversal." American Economic Review 100, no. 3 (June 1, 2010): 1261–68. http://dx.doi.org/10.1257/aer.100.3.1261.
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We analyze the existence of policy reversal, the phenomenon sometimes observed that a certain policy (say extreme left-wing) is implemented by the “unlikely” (right-wing) party. We formulate a Downsian signaling model where the incumbent government, through its choice of policy, reveals information both regarding own preferences and external circumstances that may call for a particular policy. We show that policy reversal may indeed exist as an equilibrium phenomenon. This is partly because the incumbent party has superior opportunities to reveal information, and partly because its reputation protects a left-wing incumbent when advertising a right-wing policy.
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Seabrooke, Tina, Andy J. Wills, Lee Hogarth, and Chris J. Mitchell. "Automaticity and cognitive control: Effects of cognitive load on cue-controlled reward choice." Quarterly Journal of Experimental Psychology 72, no. 6 (September 10, 2018): 1507–21. http://dx.doi.org/10.1177/1747021818797052.
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The extent to which human outcome–response (O-R) priming effects are automatic or under cognitive control is currently unclear. Two experiments tested the effect of cognitive load on O-R priming to shed further light on the debate. In Experiment 1, two instrumental responses earned beer and chocolate points in an instrumental training phase. Instrumental response choice was then tested in the presence of beer, chocolate, and neutral stimuli. On test, a Reversal instruction group was told that the stimuli signalled which response would not be rewarded. The transfer test was also conducted under either minimal (No Load) or considerable (Load) cognitive load. The Non-Reversal groups showed O-R priming effects, where the reward cues increased the instrumental responses that had previously produced those outcomes, relative to the neutral stimulus. This effect was observed even under cognitive load. The Reversal No Load group demonstrated a reversed effect, where response choice was biased towards the response that was most likely to be rewarded according to the instruction. Most importantly, response choice was at chance in the Reversal Load condition. In Experiment 2, cognitive load abolished the sensitivity to outcome devaluation that was otherwise seen when multiple outcomes and responses were cued on test. Collectively, the results demonstrate that complex O-R priming effects are sensitive to cognitive load, whereas the very simple, standard O-R priming effect is more robust.
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Li, Shu. "Is There a Problem with Preference Reversals?" Psychological Reports 74, no. 2 (April 1994): 675–79. http://dx.doi.org/10.2466/pr0.1994.74.2.675.
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The fact that any of a number of measurement mechanisms can be used to identify an invariable choice is called into question. It is suggested that documented preference reversals do not reflect an actual reversal of preference but rather an inadequate knowledge of what the preference is.
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Guo, Liang. "Contextual deliberation and the choice-valuation preference reversal." Journal of Economic Theory 195 (July 2021): 105285. http://dx.doi.org/10.1016/j.jet.2021.105285.
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Beeby, Emma, and K. Geoffrey White. "PREFERENCE REVERSAL BETWEEN IMPULSIVE AND SELF-CONTROL CHOICE." Journal of the Experimental Analysis of Behavior 99, no. 3 (February 25, 2013): 260–76. http://dx.doi.org/10.1002/jeab.23.
Full textDissertations / Theses on the topic "Choice reversal"
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Mata, Jutta. "Healthy food choice." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2008. http://dx.doi.org/10.18452/15723.
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Die vorliegende Dissertation setzt sich damit auseinander, wie das Zusammenspiel von essensbezogener Umwelt und Kognition Ernährungsentscheidungen beeinflusst. Im ersten Manuskript, “When Diets Last: Lower Cognitive Complexity Increases Diet Adherence” wird die Bedeutung der kognitiven Komplexität von Ernährungsregeln für das Einhalten einer Diät untersucht. Können Diäten scheitern, weil sie aus kognitiver Perspektive zu komplex sind, z.B. weil sich Diäthaltende nicht alle wichtigen Informationen merken oder verarbeiten können? 1136 Diäthaltende nahmen an einer längsschnittlichen Onlinestudie teil. Vorangegangenes Diätverhalten, Selbstwirksamkeit, Planung und wahrgenommene Regelschwierigkeit erhöhten das Risiko, die Diät vorzeitig aufzugeben, wobei Selbstwirksamkeit und wahrgenommene Regelschwierigkeit die einflussreichsten Faktoren waren. Im zweiten Manuskript „Meat Label Design: Effects on Stage Progression, Risk Perception, and Product Evaluation” wird der Einfluss gesundheitsrelevanter Information auf Labeln für Produktbewertung und Intention, Tierhaltung und Inhaltsstoffe von Lebensmitteln in die Kaufentscheidung einzubeziehen, untersucht. Es wurde betrachtet, wie Inhalt und Kontext (separate versus conjoint Darbietung) der Labelinformation die Bewertung von Fleischprodukten beeinflusst. Die Ergebnisse zeigen, dass sich bei einer conjoint im Gegensatz zur separaten Darbietung die Bewertung der Produkte umkehrt. Darüber hinaus hatten Personen, die zuvor nicht motiviert waren gesundheitsrelevante Aspekte in ihr Einkaufsverhalten einzubeziehen, nach Betrachten der Label eine höhere Intention diese zu berücksichtigen. Im dritten Manuskript, „Predicting Children’s Meal Preferences: How Much Do Parents Know?“, wurden Präferenzvorhersagen bezüglich der Essensentscheidungen Anderer erforscht. Es wurde untersucht, wie gut und mit Hilfe welcher Information Eltern die Mittagessenpräferenzen ihrer Kinder vorhersagen. Die Vorhersagegenauigkeit der Eltern entsprach der Stabilität der Essenspräferenzen ihrer Kinder, d.h. dass die Eltern so genau waren, wie möglich. Die Ergebnisse suggerieren, dass Eltern vor allem spezifisches Wissen über die Präferenzen ihrer Kinder und Projektion ihrer eigenen Vorlieben für die Vorhersagen nutzten.This dissertation focuses on food-related decision making, in particular, how food related environments and cognition interact to determine people’s food choices. The first manuscript, “When Diets Last: Lower Cognitive Complexity Increases Diet Adherence,” investigates the role of the cognitive complexity in diet adherence. Can weight loss diets fail because they are too complicated from a cognitive point of view, meaning that dieters are not able to recall or process the diet rules? The impact of excessive cognitive demands on diet adherence were investigated with 1,136 dieters in a longitudinal online-questionnaire. We measured perceived rule complexity controlling for other factors known to influence adherence. Previous diet behavior, self-efficacy, planning and perceived rule complexity predicted an increased risk to quit the diet prematurely, with self-efficacy and diet complexity being the strongest factors. The second manuscript, “Meat Label Design: Effects on Stage Progression, Risk Perception, and Product Evaluation,” presents two studies which tested the impact of health-related meat labels on product evaluation and intention. Specifically, the studies examined how informational content and the context (separate vs. conjoint evaluation) in which labels are assessed influence the evaluation of meat products. The results showed that conjoint assessment of labels can lead to contrary product rankings compared to separate evaluations. Moreover, the results suggest that being exposed to food labels containing specific health-relevant information can increase motivation to consider health aspects in those consumers without previous intention to do so. The third manuscript, “Predicting Children’s Meal Preferences: How Much Do Parents Know?” investigated prediction behavior concerning other people’s food choices. In particular, it asked how accurately and what cues parents use to predict their children’s meal choices. Overall, parents’ prediction accuracy matched the stability of children’s meal choices, implying that accuracy was as high as can be expected. The results suggest parents were able to obtain high predictive accuracy by using specific knowledge about their child’s likes and projecting their own preferences.
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Widemo, Maria. "Mutual Mate Choice in the Deep Snouted Pipefish Syngnathus typhle." Doctoral thesis, Uppsala universitet, Zooekologi, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3303.
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This thesis integrates the fields of sexual selection, parental investment and sex role theory by investigating mutual mate choice and mate competition in the sex role reversed deep snouted pipefish Syngnathus typhle (Pisces: Syngnathidae) through a series of laboratory experiments. In S. typhle, the female transfers her eggs to the male's brood pouch where they are nourished and oxygenated for about a month, when the male gives birth to the independent fry. Mate choice was found to be adaptive. Both sexes benefited from mating with preferred partners in terms of increased offspring viability and got larger, or faster growing, offspring when mating with large fish. Females were also shown to prefer males with thicker brood pouches. Thus, females, the more competitive sex, had multiple preferences. Both male and female choice behaviour was found to be flexible and influenced by available information on partner quality. In addition, males, but not females, copied the mate choice of consexuals. Both sexes were found to take their own quality in relation to surrounding competitors into account when deciding whether to display to potential partners. Male-male competition was found to influence both the mate choice of males and, potentially, overrule the mate choice of females. Males did not compete as intensely as females, nor did they use their sexual ornament in this context as females do. Rather, the ornament was used in interactions with females, and males that displayed more received more eggs. The findings in this thesis emphasise the importance of not viewing mate choice and competition as opposite behaviours, but rather to apply a dynamic approach in mate choice studies, integrating choice and competition in both sex
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Potter, Kevin Whitman. "When You are Confident that You are Wrong: Response Reversals and the Expanded Poisson Race Model." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1321454142.
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Zokaei, Ashtiani Amin. "Essay in decision making." Doctoral thesis, Luiss Guido Carli, 2017. http://hdl.handle.net/11385/201127.
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In the first chapter, I investigate the causes behind the choice reversal,
as procrastination of consumption good, by employing the evaluation of
anticipatory feelings. To this aim, I adopt a dynamic experiment protocol over
multiple points of the time. It allows me to disentangle anticipatory feelings
from uncertainty and intertemporal consistency in intertemporal choices. I
found that anticipatory feeling might be a significant possible explanation
behind the choice reversal.
In the second chapter, I discuss an experimental study comparing
happiness between US Americans and Germans regarding their behaviors in
saving and spending the money. I approach the relation between money and
happiness by concentrating on two functions of money (saving and spending)
and explore how happiness is affected by them. I also explore how social
status affects happiness and how this differs between Americans and
Germans. My main findings are: First, German self-classified savers who
save and American self-classified spenders who spend are happier; Secondly,
people receive happiness not only from absolute wealth, but also from relative
wealth in comparison to others; Thirdly, relative wealth (social rank) is
significantly more important to Americans than to Germans.
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Blumen, Sacha Carl. "Granularity and state socialisation: explaining Germany’s 2015 refugee policy reversal." Thesis, Canberra, ACT : The Australian National University, 2016. http://hdl.handle.net/1885/111430.
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Between late August and mid-November 2015, the German Government
liberalised its refugee policy to allow an unlimited number of
people to claim asylum in the country, and then made a
near-reversal on this policy by calling for European-wide quotas
on the number of refugees entering the EU and a reduction in the
number of refugees Germany would admit. The German Government’s
decisions to liberalise and then backtrack on its refugee policy
within a short time period, at a time when many people were still
seeking asylum from the Syrian civil war, present a puzzle to the
dominant International Relations theories of state
socialisation—constructivism and rational choice—which do not
explain well this type of observed real world behaviour.
By using the Foreign Policy Analysis literature to augment the
constructivist and rational choice approaches, I argue that a
more granular approach can help explain
Germany’s backtracking on refugee policy in 2015. I focus on
the domestic actors, institutions, and the contested processes of
their interactions from which state policy emerged. Using this
approach, I explain Germany’s backtracking on its refugee
policy as the result of varying sets of interactions over time
among actors who had different and potentially changing interests
and beliefs. This focus on granularity and contestation within
state policy making processes provides a more precise
understanding of the dynamics of policy making from which we gain
a greater insight into this puzzling example of state behaviour.
Such approaches may also help explain other examples of state
behaviour that are similarly mysterious.
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Belayadi, Raouia. "Contribution à l'étude des axiomes du choix social : la symétrie inverse et l'homogénéité des procédures de vote." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMC020/document.
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L’apport principal de cette thèse réside dans l’évaluation de la vulnérabilité d’un certain nombre de règles de voteà la violation de deux propriétés ; nous nous appuyons pour cela sur l’approche axiomatique de la théorie du choixsocial, qui permet d’étudier le comportement d’un mécanisme de choix social vis-à-vis d’un jugement de valeurémis par l’économiste. La symétrie inverse ("reversal symmetry") est la première propriété examinée. A la suite destravaux de Saari [150], nous évaluons deux catégories de règles de vote en prenant cette propriété comme critèrede décision : d’une part, les règles positionnelles simples et d’autre part les règles positionnelles à deux tours. Plusprécisément, nous calculons la probabilité d’occurrence de ce phénomène à la fois en domaine universel (c’est-à-direlorsque les individus peuvent exprimer n’importe quel ordre de préférence), et en domaine restreint (lorsque deshypothèses supplémentaires sont introduites sur la manière dont les votants classent les « candidats » à l’élection).Nous examinons le cas de trois candidats, de quatre candidats ainsi que le contexte d’élections à un très grandnombre de votants, en faisant tendre ce nombre vers l’infini.La seconde thématique est consacrée à l’examen du comportement de la règle de Dodgson face à la propriété d’homogénéité.Nous proposons une méthode de calcul simple et systématique du score de Dodgson. Nous distinguonsensuite différentes classes de profils pour lesquels cette règle est susceptible d’être vulnérable à cette propriété. Afinde compléter notre recherche, des fréquences de violation de cette propriété par la règle de Dodgson sont fourniesThe contribution of this thesis lies in the evaluation of the vulnerability of a number of voting rules to the violationof two properties of the theory of social choice. We rely on the axiomatic approach of social choice theory to examinethe behavior of a social choice procedure according to a value judgment (or axiom) emitted by the economist.Reversal symmetry is the first property studied. Following the works of Saari [150], we evaluate two families ofvoting by using this property as the decision criterion : the simple scoring rules on the one hand, and the scoringrules with runoff on the other hand. We do probability calculations to evaluate how frequent this phenomenon is,in the three-candidate case under universal domain as well as under a restricted domain, and we also tackle thefour-candidate case and the infinite number of voters case.The second topic is devoted to the study of the Dodgsonrule according to the homogeneity axiom. We introduce a simple and systematic method for the computation ofthe Dodgson score. We distinguish various classes of profiles at which that rule may be vulnerable to this property.Further, frequencies of violation of this property by the Dodgson rule are provided
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Matos, Daniel Carvalho de. "Análise dos efeitos do atraso e da probabilidade do reforço sobre a escolha em condições com esquemas concorrentes encadeados e simples." Pontifícia Universidade Católica de São Paulo, 2013. https://tede2.pucsp.br/handle/handle/16703.
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Daniel Carvalho de Matos.pdf: 1928285 bytes, checksum: af4f3292fac23f3743a9598b8984c643 (MD5)
Previous issue date: 2013-05-21The purpose of this research was to assess the effects of manipulating reinforcer delay and probability over the choices in simple and chained concurrent schedules and if these effects suggest similarities between these two reinforcer parameters. Four experiments were conducted. 12 psychology students from a private university served as participants, three for each experiment. The Experiments 1 and 2 involved choice trials between concurrent chained schedules with two links, with the manipulation of reinforcer magnitude and delay (Experiment 1) and reinforcer magnitude and probability (Experiment 2). In both experiments, the choice of component A, from the first link, produced, after T seconds (Experiment 1) or after a probability P (Experiment 2), the access to a new choice link between the components R1 with a small immediate reinforcer (Experiment 1) or a small and more probable reinforcer (Experiment 2) versus R2 with a larger delayed reinforcer (Experiment 1) or with a large and less probable reinforcer (Experiment 2). Still in the first link, in case the component B was chosen, after T seconds (Experiment 1) or a probability P (Experiment 2), there was a second link in which only one component was available: R2 with a large delayed reinforcer (Experiment 1) or with a large and less probable reinforcer (Experiment 2). As a result, first the participants went through selection conditions in which the larger reinforcer should be preferred over the small one (for both experiments); the immediate reinforcer should be preferred over the delayed one (Experiment 1) and the more probable reinforcer should be preferred over the less probable one (Experiment 2); the small immediate reinforcer should be preferred over the larger delayed reinforcer (Experiment 1) and the small and more probable reinforcer should be preferred over the larger and less probable one (Experiment 2). After this, all participants from both experiments went through conditions in which preference reversals, to the component with the larger and more delayed reinforcer (Experiment 1) or the component with the larger and less probable reinforcer (Experiment 2), were assessed. In Experiment 1, the variable time (T) between the two links was manipulated, involving 7.5 and 15 seconds. As result, the data revealed that preference reversal occurred for all the three participants from Experiment 1, considering that, only for participant P1, the reversal occurred when the time (T) between the two links was 7.5 seconds. Besides, for two of the participants (P1 and P3), most of the choices, on first link, were made on component B (alternative that was called the commitment choice according to the literature). In Experiment 2, preference reversal was assessed when the probability between the two links was 17%. The data revealed that reversal occurred, in the sense that most of the choices were made on the component with the larger and less probable reinforcer for all the three participants (P5, P6 and P7). Only for one of these participants (P6), the component B, from first link, was the most chosen one in two blocks of trials. Even though the data suggested relations with those that were obtained in Experiment 1, with the suggestion that reinforcer delay and probability share similar effects over the choices in chained concurrent schedules, there was a methodological problem in Experiment 2 that makes the comparison more difficult. The fact that the probability of the passage from the first to the second link was very low (17%) limited the number of trials in which participants had the chance to respond on second link. Consequently, the access to the reinforcers happened in only a few occasions. Experiments 3 and 4 involved choice trials between simple concurrent schedules with the manipulation of reinforcer magnitude and delay (Experiment 3) and reinforcer magnitude and probability (Experiment 4). After selection conditions similar to those from the two previous experiments, the participants went through a condition with concurrent FR / FR schedules (with a ratio that could vary from 10 to 80), in which the preference reversal was assessed. The data revealed that reversal occurred for all participants from Experiment 3 (P7, P8 and P9) with preference of the component with the larger and delayed reinforcer and the same happened for two of the participants from Experiment 4 (P11 and P12). The data suggested similarities between the reinforcer delay and probability parameters, considering their effects over choices in simple concurrent schedules. In both experiments other conditions (CRF, SigFR and FI) were conducted to assess if the response pattern produced by the FR would be changed, with most of the choices made on the other component with the small immediate reinforcer (Experiment 3) or the small and more probable reinforcer (Experiment 4). The data revealed that the change occurred only for two of the participants from Experiment 4 (P11 and P12), reinforcing the similarity with the data from a research conducted previously with pigeons as subjects
O objetivo desta pesquisa foi avaliar o efeito da manipulação dos parâmetros de atraso e probalidade do reforço sobre as escolhas em esquemas concorrentes simples e encadeados e se esses efeitos sugerem semelhanças entre esses dois parâmetros. Quatro estudos foram conduzidos. Participaram 12 estudantes universitários do curso de psicologia, sendo três participantes para cada estudo. Os Estudos 1 e 2 envolveram tentativas de escolha entre esquemas concorrentes encadeados com dois elos, com manipulação de magnitude e atraso do reforço (Estudo 1) e magnitude e probabilidade do reforço (Estudo 2). Em ambos os estudos, a escolha do componente A, do primeiro elo, produzia, após T segundos (Estudo 1) ou em uma dada probabilidade P (Estudo 2), o acesso a um novo elo de escolha entre os componentes R1 com reforço menor imediato (Estudo 1) ou reforço menor e mais provável (Estudo 2) versus R2 com reforço maior atrasado (Estudo 1) ou reforço maior e menos provável (Estudo 2). Ainda no primeiro elo, caso o componente B fosse escolhido, após T segundos (Estudo 1) ou uma dada probabilidade P (Estudo 2), havia um segundo elo em que apenas um componente, o R2' com reforço maior atrasado (Estudo 1) ou maior e menos provável (Estudo 2), estava presente. Como resultado, primeiramente os participantes passaram por condições de seleção em que maior magnitude deveria ser preferida sobre menor magnitude (para ambos os estudos); menor atraso deveria ser preferido sobre maior atraso (Estudo 1) e maior probabilidade deveria ser preferida sobre menor probabilidade (Estudo 2); menor magnitude e menor atraso deveriam ser preferidos sobre maior magnitude e maior atraso (Estudo 1) e menor magnitude e maior probabilidade deveriam ser preferidos sobre maior magnitude e menor probabilidade (Estudo 2). Depois, os participantes de ambos os estudos passaram por condições em que a reversão da preferência para a alternativa com reforço maior atrasado (Estudo 1) e reforço maior e menos provável (Estudo 2) foi avaliada. No Estudo 1, a variável tempo entre os elos (T) foi manipulada, envolvendo 7.5 e 15 segundos. Como resultado, os dados revelaram que a reversão aconteceu para todos os três participantes do Estudo 1, sendo que, apenas para o participante P1, tal reversão já ocorreu com o tempo (T) entre os elos de 7.5 segundos. Além disso, para dois dos participantes (P1 e P3) os maiores percentuais de escolha, no primeiro elo, foram no componente B. No Estudo 2, a reversão da preferência foi avaliada quando a probabilidade (P) entre os elos era de 17%. O dado indica que a reversão ocorreu, no sentido de que a maior parte das escolhas foi da alternativa com reforço maior e menos provável para todos os três participantes (P5, P6 e P7). Apenas para um desses participantes (P6) o componente B do primeiro elo foi o mais escolhido em dois blocos de tentativas. Ainda que esses dados sugiram relações com os que foram obtidos no Estudo 1, com a sugestão de que atraso e probabilidade do reforço apresentariam efeitos semelhantes sobre as escolhas em esquemas concorrentes encadeados, houve diferenças nas taxas de reforços entre os estudos, o que dificulta a comparação. O fato de a probabilidade de passagem para o segundo elo ter sido muito baixa (17%) limitou o número de tentativas em que os participantes tinham a chance de responder no segundo elo do Estudo 2. Consequentemente, o acesso aos reforçadores aconteciam em poucas ocasiões. Os Estudos 3 e 4 envolveram tentativas de escolha entre esquemas concorrentes simples, com manipulação de magnitude e atraso do reforço (Estudo 3) e magnitude e probabilidade do reforço (Estudo 4). Após condições de seleção semelhantes às dos estudos anteriores, os participantes passaram por uma condição com esquemas FR / FR concorrentes (com razão podendo variar de 10 a 80), em que a reversão da preferência foi avaliada. Os dados indicaram que a reversão ocorreu com todos os participantes do Estudo 3 (P7, P8 e P9) com maior preferência do componente com reforço maior atrasado e aconteceu com dois participantes do Estudo 4 (P11 e P12). Esses dados sugerem semelhanças entre o atraso e probabilidade do reforço em esquemas concorrentes simples. Em ambos os Estudos foram conduzidas, posteriormente, condições (CRF, SigFR e FI) em que se avaliou se o padrão de respostas gerado pela condição com FR seria modificado, com maior escolha da outra alternativa com reforço menor imediato (Estudo 3) ou reforço menor e mais provável (Estudo 4). Os dados revelaram que a mudança de padrão ocorreu apenas para dois dos participantes do Estudo 4 (P11 e P12) reforçando relações com os dados de um estudo conduzido anteriormente com pombos
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Silva, João Carlos de Paiva Coelho Machado. "The impact of the measurement unit of unit price on consumer preference and choice." Master's thesis, NSBE - UNL, 2010. http://hdl.handle.net/10362/10289.
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A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and EconomicsThis project studies how variations in the measurement unit of unit price affect consumers’ preference and choice. Particularly, we contend that consumers’ relative preference for the same two option is different when options’ unit price is presented in a large measurement unit – per kg; than when options’ unit price is presented in a small measurement unit – per 100g. Moreover, consumers’ choice will shift more to lower unit price options when options’ unit price is presented in larger measurement unit – per kg. Two experiments confirmed our hypotheses. Implications and future research on the topic are discussed.
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Alshamrani, Ahmad M. "Combined routing and product take-back strategies in reverse logistics." Full text available, 2003. http://images.lib.monash.edu.au/ts/theses/alshamrani.pdf.
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Boland, Wendy Attaya. "Predicting the Fickle Buyer with the Attribute Carryover Effect." Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/194913.
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The majority of the research conducted on consumer choice phenomena focuses on how choices are made and the processes that lead up to those choices. While these are essential aspects within the breadth of choice knowledge that exists today, little research has been conducted on the options that are rejected during this process. Thus, the overarching goal of this dissertation is gain an understanding of consumer choice processes and outcomes through the lens of a nearly chosen alternative. Specifically, this dissertation investigates how the decision process can cause a close second option to be rejected when the chosen option is found to be unavailable.As a means of achieving these goals, I first demonstrate the phenomenon that consumers do not always select a close second option when the first choice option is unavailable, contrary to the prediction of economic rationality. Next, I propose that the decision process itself, specifically the use of a tie-breaking attribute to differentiate between close options, triggers a choice outcome that does not include the original second choice option, but rather an alternative that possesses this tie-breaking attribute. Finally, I examine the implications that the preference reversal phenomenon described above has for retailers and manufacturers.My original interest in this phenomenon stems from anecdotal evidence provided by a variety of informants. Although this evidence helped me to recognize the prevalence of rejected second choice options, experimental design is used to investigate this phenomenon and the boundary conditions that confine this effect. Consequently, my dissertation consists of 6 experiments. Experiment 1 and a pilot study establish the effect and investigate the theoretical process that account for my findings. Experiments 2 through 4 rule out alternative explanations and add support towards the existence and prevalence of the effect. Finally, Experiments 5 and 6 explore the impact of these results for improving the performance of marketing managers. It is my belief that incorporating the dynamic effects of the second-most preferred option may ultimately lead to more accurate and sophisticated prediction of buyer choices, more effective retailing and personal selling strategies, and more profitable management of product line portfolios.
Books on the topic "Choice reversal"
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Reversal theory: Motivation, emotion, and personality. London: Routledge, 1989.
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Apter, Michael J. Reversal theory: The dynamics of motivation, emotion, and personality. 2nd ed. Oxford: Oneworld, 2007.
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Autumn, Rogers, ed. [Un earth]: Exploring a land with no name. Waukegan, IL: Plethora Publishing, 2008.
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Negotiating identity in contemporary Japan: The case of kikokushijo. London: Kegan Paul International, 2000.
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The art of coming home. Yarmouth, Me: Intercultural Press, 1997.
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The art of coming home. Yarmouth, Me: Intercultural Press, 2001.
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Japan's "international youth": The emergence of a new class of schoolchildren. Oxford [England]: Clarendon Press, 1990.
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Barnard, Amanda S. Size-dependent phase transitions and phase reversal at the nanoscale. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533053.013.5.
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This article investigates size-dependent phase transitions and phase reversal at the nanoscale. In general, the crystallization of a nanomaterial into a particular structure is kinetically driven. However, the choice of which structure occurs in a specific size range is often a result of thermodynamics. These size-dependent phase relationships may be explored by analyzing the free energy and enthalpy of formation. This article considers the size-dependent phase stability of nanomaterials based on experimental and theoretical studies of zirconia and titania. It describes the use of bulk phase diagrams to capture important information on the stability of materials. It also highlights some of the physical parameters that influence phase transitions and phase reversal at the nanoscale, including temperature, pressure, shape, solution chemistry, surface chemistry and surface charge.
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Wijdicks, Eelco F. M., and Sarah L. Clark. Anticoagulation and Reversal Drugs. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190684747.003.0007.
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Management of anticoagulation, is a common practice. This chapter discusses best approaches, heparin choices, and safety issues. Anticoagulation is required in immobilized patients in the neurosciences intensive care unit to prevent deep venous thrombosis and the more consequential pulmonary embolus. There are very few strong indications for anticoagulation in ischemic stroke and exceptions are discussed. Reversal of anticoagulation is also needed in some patients and certainly in patients with recent significant trauma or spontaneous hemorrhages. Current reversal protocols require intravenous vitamin K, fresh-frozen plasma, and more often, prothrombin complex concentrate. Reversal of the effect of the direct oral anticoagulants is more difficult but options are discussed.
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Byrne, Logan. Fae's Choice: A Reverse Harem Paranormal Romance. Independently Published, 2018.
Find full textBook chapters on the topic "Choice reversal"
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Belayadi, Raouia, and Boniface Mbih. "Violations of Reversal Symmetry Under Simple and Runoff Scoring Rules." In Studies in Choice and Welfare, 137–60. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48598-6_7.
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Newell, Ben R., David A. Lagnado, and David R. Shanks. "Analysing Decisions II: Prospect Theory and Preference Reversals." In Straight Choices, 125–45. 3rd ed. London: Psychology Press, 2022. http://dx.doi.org/10.4324/9781003289890-9.
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Wulligundam, Praveen, and Maneesha S. Inamdar. "To D(e)rive or Reverse: The Challenge and Choice of Pluripotent Stem Cells for Regenerative Medicine." In Regenerative Medicine: Laboratory to Clinic, 99–111. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3701-6_6.
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Bongyereire, Joy Samantha. "Factors Influencing the Choice of Inorganic contrasting to Organic Practices in Irish Potato Production and Viable Actions to Reverse the Trend: A Case Study of Kisoro District, South-Western Uganda." In Science, Policy and Politics of Modern Agricultural System, 61–81. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-7957-0_5.
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Viganò, Paola, Bertrand Plewinski, Guillaume Vanneste, and Nicolas Willemet. "Peterbos: Living in the Park, Inhabiting the City." In The Urban Book Series, 155–74. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-19748-2_11.
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AbstractThis paper explores the urban issues underlying the design experience in the Peterbos neighbourhood, Anderlecht, Brussels-Capital Region. It presents four themes, based on the living experiment of this urban project, which consists of a master plan for the renovation of public spaces (Studio Paola Viganò and vvv architecture urbanisme 2020). It starts with the critical perspective of a ‘project for the ground’. As an embodiment of modernity, collective living in high-rise buildings has made it possible to free up a large area of ground for use as a shared landscape. In Peterbos, this large ground has aged, deteriorated, and become disconnected from the city. Up until now, these characteristics have made Peterbos a place where all the ‘misery in the world’ (Bourdieu, La misère du Monde. Seuil, 1993) has been concentrated. A long transformation process is now underway: the renovation of housing and public spaces proposes new living conditions and a new image for the district. However, there are still questions about the appropriateness of such an investment in the absence of a radical rediscussing of what makes Peterbos an enclave for the poorest. Our analysis starts with the ground of Peterbos and its relationship with water flows, biodiversity, and the rest of the city. The modern project focuses on the liberation of the public ground. We see the Peterbos project as an opportunity for critical reinterpretation. Second, we reconsider the district’s position in the city and the need to reverse feelings inside and outside, aiming to renew relations with the metropolis. Third, a broader understanding of the environment is necessary in order to take part in an ecological transition. The notion of diversity and mixed-use as a fertile framework for emancipation and individual initiative is then discussed. Finally, in the conclusions, having explored the progetto di suolo as a manifold agent and pushed it to its limits, we conclude by examining the ‘stone guest’. Indeed, urbanism and investment in urban renewal do not represent an autonomous and self-responsible solution to the social and urban challenges society is currently facing. The design of public space represents a wide, but also a narrow, space for manoeuvre. When structural changes are implied, they do not tackle the basis of inequality concentrated at this site, linked to decisions made in the past that do not show the expected results. Interaction with economic policies is still too weak. We choose to use clear but sometimes burdensome vocabulary to discuss these spatial and social matters, not escaping the difficulty of the topic. All the same, urban and landscape designers have a responsibility and the possibility to assert the original meaning of politics as the organization of public life in the city, more broadly addressing actions in space and measures to reduce inequality and restore the dignity of the people who live there.
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"Preference reversal asymmetries in a static choice setting." In Environmental Economics, Experimental Methods, 353–65. Routledge, 2007. http://dx.doi.org/10.4324/9780203935361-31.
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Usher, Marius, Anat Elhalal, and James L. McClelland. "The neurodynamics of choice, value-based decisions, and preference reversal." In The Probabilistic Mind:, 277–300. Oxford University Press, 2008. http://dx.doi.org/10.1093/acprof:oso/9780199216093.003.0013.
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Rolls, Edmund T. "Orbitofrontal cortex damage effects in humans and other primates." In The Orbitofrontal Cortex, 130–44. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198845997.003.0004.
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Impairments in the rapid reversal learning of stimulus-reward associations, when expected rewards are not obtained or punishers are obtained, are produced by damage to the orbitofrontal cortex; and contribute to the major changes in emotion, personality, and impulsiveness that can be produced by damage to the orbitofrontal cortex. Impairments in the processing of rewards are found, with alterations in food choice and eating, and in the identification of face and voice expressions, which are important for social behavior.
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"Analysing decisions II: prospect theory and preference reversals." In Straight Choices, 134–53. Psychology Press, 2015. http://dx.doi.org/10.4324/9781315727080-15.
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Rosenthal, Gil G. "Mate Choice and Human Exceptionalism." In Mate Choice. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691150673.003.0017.
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This chapter presents a biological perspective on the diversity and complexity of human mate choice. Mating preferences can change very rapidly owing to the fact that they depend on a large reservoir of standing genetic variations whose effects can be modified and reversed by environmental and social inputs. In contemporary global society, rapid technological and societal changes means that individual mating preferences have an unprecedented potential to be revealed and expressed as choices, some with reproductive consequences. Individuals now have more agency than they ever have in human history, with a greater opportunity than ever to sample potential mates. The social and evolutionary consequences are sure to be fascinating.
Conference papers on the topic "Choice reversal"
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Coletta, Nancy J., and David R. Williams. "Motion reversal in peripheral retina." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.wt3.
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At high spatial frequencies, drifting interference fringes viewed in the fovea and parafovea can appear to move opposite to their true direction. We have previously shown that aliasing by the cone mosaic is responsible for this motion reversal. We measured forced-choice psychometric functions for direction discrimination as a function of the spatial frequency of drifting vertical interference fringes. For a regular sampling lattice, the perceived direction of motion should reverse at integer multiples of the lattice Nyquist frequency. Despite disorder in the cone mosaic, the data in the fovea and parafovea agree with this prediction. At each retinal location tested, motion reversals occur at two spatial frequencies which correspond to one and two times the cone Nyquist frequency. However, in the periphery, from 10 to 25° eccentricity, the first motion reversal occurs at a lower frequency than would be predicted from cone sampling. The reason for this discrepancy is unclear, but it probably involves postreceptoral mechanisms. Nonetheless, the Nyquist frequency obtained at the second motion reversal agrees with peripheral anatomical cone spacing data.
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Feng, Gao. "Computational Model of Preference Reversal in Judgment and Choice." In 2013 International Conference on Computer Sciences and Applications (CSA). IEEE, 2013. http://dx.doi.org/10.1109/csa.2013.141.
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Williams, David R. "Photoreceptor Sampling of Moving Images." In Applied Vision. Washington, D.C.: Optica Publishing Group, 1989. http://dx.doi.org/10.1364/av.1989.wc1.
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A periodic moving stimulus can appear to move in the reverse direction if it is under-sampled in time, as in the case of the "wagon wheel" effect caused by an inadequate frame rate in motion pictures. Sampling by a spatial array of sensors or pixels can produce a similar motion reversal for periodic patterns moving at any velocity, if the spatial sampling frequency is too low. These artifacts are well-known to engineers who design discrete imaging systems. The artifact resulting from spatial under-sampling has been demonstrated in biological imaging systems (Goetz, 1965, Coletta and Williams, 1987). For example, insects tethered at the center of a rotating drum containing low spatial frequency vertical stripes exhibit an optomotor response: they rotate in the same direction as the stripes. However, these insects reverse their direction of motion when confronted with spatial frequencies that exceed the Nyquist frequency of their ommatidial array. This is just what one would expect from spatial aliasing by the regular array of insect ommatidia. Nancy Coletta and I have demonstrated a similar effect in the human with drifting interference fringes whose contrast is immune to optical degradation. In the parafoveal retina, high spatial frequency (but not low) gratings look like two-dimensional spatial noise and can appear to move in the opposite direction from their true direction of motion. This motion reversal can be demonstrated with a forced-choice technique. Subjects guessed the direction of motion of vertical, unity contrast fringes whose direction was randomly determined on each trial. No feedback was provided. Percent correct falls significantly below chance performance at high spatial frequencies, indicating a reversal in the perceived direction of motion. At higher frequencies, the perceived direction of motion reverses a second time, and at even higher frequencies performance settles to chance.
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Coletta, Nancy J., and David R. Williams. "Psychophysical estimate of parafoveal cone spacing." In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/oam.1986.thi2.
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Over a narrow range of spatial frequencies higher than the parafoveal resolution limit, interference fringes can appear as striated patterns whose predominant orientation is perpendicular to the actual fringe orientation. This finding has been confirmed with a forced-choice orientation identification procedure. Aliasing by the parafoveal cone mosaic may explain this orientation reversal at high spatial frequencies. In these conditions, the power spectra of fringes sampled by the irregular cone mosaic contain low frequencies whose overall orientation is perpendicular to the fringe orientation. This happens only when the fringe period equals the average spacing of cones. In our measurements at various retinal eccentricities, the fringe period that produces the orientation reversal agrees with the anatomical measures of cone spacing of Osterberg1 which suggests that the alias arises in cones.
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Orel-Bixler, Deborah A., A. M. Norcia, and Smith-Kettlewell. "Differential Growth in Acuity for Pattern Reversal and Pattern Onset-Offset Targets." In Noninvasive Assessment of the Visual System. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/navs.1986.mb4.
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The Visual Evoked Potential (VEP) has been used by a number of investigators for non-invasive assessment of the development of visual acuity in human infants. In all these studies, visual acuity develops to near adult levels during the first year of life. Close inspection of these growth curves reveals an interesting difference in the apparent rate of acuity development during the first year. Data from studies which have used the pattern onset/offset mode of stimulus presentation (Marg et. al., 1976; de Vries-Khoe and Spekreijse, 1982) indicate that acuity develops rapidly at a rate of 0.5 octaves/month from an initial level of 1 to 2 c/deg. Our studies using the contrast reversal presentation mode (Norcia and Tyler, in press) indicate a growth rate of only 0.25 octaves/month, but from an initially higher level -- around 4 to 5 c/deg. We thus decided to test the same infants on the two different acuity tasks. A difference between the two presentation modes would have important implications for the choice of the best presentation mode for use in clinical testing, as well as for theories of acuity development.
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Eynon, P. A., A. Whitfield, M. R. Firth, A. J. Parkes, and R. Saxton. "A Study of the Flow Characteristics in the Inducer Bleed Slot of a Centrifugal Compressor." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-262.
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A broad operating range between surge and choke is so important for turbocharger compressors and many other applications that a vaneless diffuser, with its reduced efficiency, is usually adopted. With the demand for increased pressure ratio the operating range naturally reduces and techniques to extend the range are necessary. The inducer bleed slot is a technique which has been adopted in turbocharger compressors. This approach was first reported by Fisher (1988) and was described as a Map Width Enhancement slot (MWE). The flow conditions in the MWE slot and impeller inlet duct were investigated with a view to developing an improved understanding of the flow mechanisms involved as the flow rate was reduced from choice to surge. Mean temperature and pressure measurements were recorded in the MWE passage, the main inducer duct to the impeller and the inlet duct upstream of the compressor. In addition the development of flow pulsations were monitored with pressure transducers in the MWE passage, the main inducer duct and the inlet duct, together with the application of flow visualisation techniques. The transient pressure measurements showed that low frequency flow pulsations developed in the MWE passage at high flow rates. As the flow rate was reduced the low frequency pulsations disappeared and flow reversal through the MWE passage developed. It was shown that flow reversal through the MWE passage commenced at flow rates close to the peak efficiency point for the compressor.
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Lee, Jong Hak, Yu Jun Lee, Jung Sam Kim, Seo Kyung Jeong, Min Su Kim, Seok Hoon Oh, Kyoung Wook Jung, Soo Yong Son, and Chang Reol Kim. "Nano Probe Analysis of Device Characteristics Affected by Ring Type Crystalline Defect." In ISTFA 2011. ASM International, 2011. http://dx.doi.org/10.31399/asm.cp.istfa2011p0322.
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Abstract In this work, crystalline defects (dislocations) occurred in the silicon substrate during annealing SOD (Spin On Dielectric) which is an easy choice for its superior STI gap-fill ability. The reversal of address data that share same SIO (Signal Input Out) line in a DQ arises from crystalline defects. The failure analysis of physical methods has difficulty finding minute defects within the active because it is scarcely detectable from the top view. Situation can be well understood by electrical analysis using the nano probe. Due to its ability to probing contact nodes around the fail area, a ring type crystalline defect which is hardly detected from the top view was effectively analyzed by 3D TEM with the assistance of nano probe. This work shows that hybrid analysis of electrical method by nano probe and physical method by 3D TEM is useful and effective in failure analysis in semiconductor.
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"A BEHAVIORAL MODEL OF REVERSE MORTGAGE CHOICE." In 7th European Real Estate Society Conference: ERES Conference 2000. ERES, 2000. http://dx.doi.org/10.15396/eres2000_065.
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Konigsberg, Amir, and Ron Asherov. "A Recommender System Sensitive to Intransitive Choice and Preference Reversals." In Fourth International conference on Computer Science & Information Technology. Academy & Industry Research Collaboration Center (AIRCC), 2014. http://dx.doi.org/10.5121/csit.2014.4235.
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Chen Guowei. "Reverse auction format choice decision based on supplier attributes." In 2015 12th International Conference on Service Systems and Service Management (ICSSSM). IEEE, 2015. http://dx.doi.org/10.1109/icsssm.2015.7170287.
Full textReports on the topic "Choice reversal"
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Andreoni, James, Deniz Aydin, Blake Barton, B. Douglas Bernheim, and Jeffrey Naecker. When Fair Isn't Fair: Understanding Choice Reversals Involving Social Preferences. Cambridge, MA: National Bureau of Economic Research, November 2018. http://dx.doi.org/10.3386/w25257.
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Elmann, Anat, Orly Lazarov, Joel Kashman, and Rivka Ofir. therapeutic potential of a desert plant and its active compounds for Alzheimer's Disease. United States Department of Agriculture, March 2015. http://dx.doi.org/10.32747/2015.7597913.bard.
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We chose to focus our investigations on the effect of the active forms, TTF and AcA, rather than the whole (crude) extract. 1. To establish cultivation program designed to develop lead cultivar/s (which will be selected from the different Af accessions) with the highest yield of the active compounds TTF and/or achillolide A (AcA). These cultivar/s will be the source for the purification of large amounts of the active compounds when needed in the future for functional foods/drug development. This task was completed. 2. To determine the effect of the Af extract, TTF and AcA on neuronal vulnerability to oxidative stress in cultured neurons expressing FAD-linked mutants.Compounds were tested in N2a neuroblastoma cell line. In addition, we have tested the effects of TTF and AcA on signaling events promoted by H₂O₂ in astrocytes and by β-amyloid in neuronal N2a cells. 3. To determine the effect of the Af extract, TTF and AcA on neuropathology (amyloidosis and tau phosphorylation) in cultured neurons expressing FAD-linked mutants. 4. To determine the effect of A¦ extract, AcA and TTF on FAD-linked neuropathology (amyloidosis, tau phosphorylation and inflammation) in transgenic mice. 5. To examine whether A¦ extract, TTF and AcA can reverse behavioral deficits in APPswe/PS1DE9 mice, and affect learning and memory and cognitive performance in these FAD-linked transgenic mice. Background to the topic.Neuroinflammation, oxidative stress, glutamate toxicity and amyloid beta (Ab) toxicity are involved in the pathogenesis of Alzheimer's diseases. We have previously purified from Achilleafragrantissimatwo active compounds: a protective flavonoid named 3,5,4’-trihydroxy-6,7,3’-trimethoxyflavone (TTF, Fl-72/2) and an anti-inflammatory sesquiterpenelactone named achillolide A (AcA). Major conclusions, solutions, achievements. In this study we could show that TTF and AcA protected cultured astrocytes from H₂O₂ –induced cell death via interference with cell signaling events. TTF inhibited SAPK/JNK, ERK1/2, MEK1 and CREBphosphorylation, while AcA inhibited only ERK1/2 and MEK1 phosphorylation. In addition to its protective activities, TTF had also anti-inflammatory activities, and inhibited the LPS-elicited secretion of the proinflammatorycytokinesInterleukin 6 (IL-6) and IL-1b from cultured microglial cells. Moreover, TTF and AcA protected neuronal cells from glutamate and Abcytotoxicity by reducing the glutamate and amyloid beta induced levels of intracellular reactive oxygen species (ROS) and via interference with cell signaling events induced by Ab. These compounds also reduced amyloid precursor protein net processing in vitro and in vivo in a mouse model for Alzheimer’s disease and improvedperformance in the novel object recognition learning and memory task. Conclusion: TTF and AcA are potential candidates to be developed as drugs or food additives to prevent, postpone or ameliorate Alzheimer’s disease. Implications, both scientific and agricultural.The synthesis ofAcA and TTF is very complicated. Thus, the plant itself will be the source for the isolation of these compounds or their precursors for synthesis. Therefore, Achilleafragrantissima could be developed into a new crop with industrial potential for the Arava-Negev area in Israel, and will generate more working places in this region.