Dissertations / Theses: 'Age factors'

1

Whiting, Wythe Lawler IV. "Influence of age, retrieval task, and working memory on dual-task performance." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/28566.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Earles, Julie Lynn. "The effects of environmental context on memory : an examination of age differences." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/28634.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Saylor, Laurie. "Investigating the relationship between metamemory and memory performance predictions." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/28772.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Campbell, Regan Helen. "An age-related comparison of audio and audio plus video presentation modes for conveying technical information." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/28612.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Whiting, Wythe L. IV. "Effects of elaboration on age differences in memory performance." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/28757.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Fleece, Amy Mattina. "Remembering to remember : does event-based prospective memory decline with Age?" Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/28618.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Meinz, Elizabeth J. "When can experience reduce age differences in cognitive tasks? : a study of musical memory." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/28791.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Earles, Julie Lynn. "Influence of type of material to be remembered on adult age differences in memory performance : is there something special about performed activities?" Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/28864.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

McGuire, Christy L. "Age differences in recall, strategies and estimation accuracy on free recall task." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/29198.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Colônia, Regina Célia. "Adult age differences in memory for lateral orientation of pictures." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/29327.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Keil, Mathias, and Birgit Spanner-Ulmer. "Chemnitz Age Model – an interdisciplinary research basic approach to characterize age critical performance factors." Universitätsbibliothek Chemnitz, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200902050.

Full text

Abstract:

The central basis for an age appropriate design of products and processes lies primarily in the adaptation of the altering performance factors of aging people. Results about the changing performance of people are available for several research areas. The “Chemnitz Age Model” as an interdisciplinary approach has got the explicit aim to collect present research data, to review this data with regard to its usability and its eventual transfer to a comprehensive age model. Furthermore, the results will be represented in the “Chemnitz Age Database” in a systematic way. The profound basis of knowledge allows an age appropriate development and adaptation of products and processes
Die zentrale Basis für eine altersgerechte Gestaltung von Produkten und Prozessen liegt primär in der Anpassung an die sich im Alter ändernden Leistungsfaktoren des Menschen. Ergebnisse über die Veränderung der Leistungsfähigkeit des Menschen liegen bereits in verschiedenen Forschungsgebieten vor. Das „Chemnitzer Altersmodell“ hat als interdisziplinärer Forschungsansatz das Ziel, vorhandene Forschungsergebnisse zusammenzutragen, hinsichtlich ihrer Verwertbarkeit zu überprüfen und in ein ganzheitliches, arbeitswissenschaftliches Altersmodell zu überführen. Die Ergebnisse werden in der „Chemnitzer Altersdatenbank“ strukturiert erfasst. Die fundierte Wissensbasis ermöglicht eine alternsgerechte Entwicklung und Anpassung von Produkten und Prozessen

APA, Harvard, Vancouver, ISO, and other styles

12

Stronge, Aideen Joyce. "Understanding the Role of Planning in the Performance of Complex Prospective Memory Tasks." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/11560.

Full text

Abstract:

Prospective memory also known as remembering to remember is the process of remembering to carry out future actions. The present study investigated age-related differences in the performance of two complex prospective memory tasks for 30 younger adults (M = 19.43, SD = 2.10) and 30 older adults (M = 66.87, SD = 3.25). The two tasks had the same constraints, but were framed within different contexts (i.e., taking medications or scheduling groups). Participants performed the tasks within a simulated week based on activities they perform as part of their weekly routine, and they were given 30 minutes to develop plans to help them remember the tasks. Older adults were as accurate as younger adults in developing their plans for both tasks, but made significantly more errors in carrying out the prospective tasks. Planning style was not directly predictive of performance for the group task. However, age-related differences in performance for the medication task were related to planning style such that age-related declines in performance were observed for older adults who used a planning style that did not provide adequate memory support (i.e., list layout with time cues). Moreover, participants of all ages with lower levels of planning experience were more likely to select this ineffective planning style. These findings provide evidence that age-related differences in prospective memory can be ameliorated through the use of a familiar task and the opportunity to develop plans to remember the task. However, if participants develop an ineffective plan they will show performance decrements.

APA, Harvard, Vancouver, ISO, and other styles

13

Fristoe, Nathanael M. "Examination of age-related deficits on the Wisconsin card sorting test." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/28664.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Burlacu, Gabriela. "Employee Age Differences in Formal Performance Feedback Reactions: Examining the Effects of Perceived Valence, Content, and Delivery." PDXScholar, 2011. https://pdxscholar.library.pdx.edu/open_access_etds/35.

Full text

Abstract:

As the nature of work is rapidly changing, organizations in developed nations all over the world are experiencing shifts in the age composition of their workforces. These changes, which include an aging workforce that is becoming increasingly age-diverse, indicate that organizational researchers and practitioners need to be better aware of how age differences manifest themselves in the workplace and what implications this has for effective employee management. In the current study it is proposed that employees of different ages react differently to various elements of a formal performance feedback event. Specifically, Carstensen's developmental Socio-emotional Selectivity Theory is used as a theoretical backing for explaining how and why employees of different ages perceive and react to performance feedback differently based on their perceptions of the valence, content quality, and delivery quality of the feedback. The results show evidence of age differences in feedback reactions, with younger adults being particularly concerned with information that will benefit them in the future and older adults being particularly concerned with information that conveys a positive relationship with one's supervisor. These findings have both conceptual and practical implications as we seek to build workplace aging theory and find ways to better manage and retain valuable employees of all ages in a changing world of work.

APA, Harvard, Vancouver, ISO, and other styles

15

Kidder, Daniel Peter. "Effects of switching attention between tasks on age differences in prospective memory." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/28749.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Abuzaydeh, Firas A. "Age-related gastrointestinal changes in trinitrobenzene sulfonic acid (TNBS)-induced rat model of colitis : a morphological assessment." Virtual Press, 2003. http://liblink.bsu.edu/uhtbin/catkey/1266022.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Derwinger, Anna. "Develop your memory strategies! : self-generated versus mnemonic strategy training in old age : maintenance, forgetting, transfer, and age differences /." Stockholm, 2005. http://diss.kib.ki.se/2005/91-7140-309-4/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Hancock, Sherri Rosemary McDonald. "An examination of age-related changes in achromatic and chromatic retinal increment thresholds at photopic levels." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29765.

Full text

Abstract:

This research investigated the influence of the normal aging process on truly photopic achromatic and chromatic retinal increment threshold over an extensive range of colored targets. It was found that for both achromatic and chromatic retinal thresholds there is a significant correlation between advancing age and the stimulus luminance intensity at threshold across the visible spectrum. This correlation is greater for the short wavelength range than for both the middle and the long wavelength ranges (r² (achromatic)= 0.43; r²(chromatic) = 0.49. In addition, a small exploratory study was completed which examined the role of prereceptoral changes in these age-related differences in color vision function. Results from this preliminary study (Experiment II) support the supposition that prereceptoral factors cannot account for all of the age-related losses that are seen in visual function, particularly in the middle and long wavelength ranges of the visible spectrum.
Arts, Faculty of
Psychology, Department of
Graduate

APA, Harvard, Vancouver, ISO, and other styles

19

Blomberg, Jesper. "AGE-SPECIFIC RISK FACTORS FOR RADICALIZATION - MOVING BEYOND IDEOLOGY." Thesis, Malmö universitet, Fakulteten för hälsa och samhälle (HS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-26252.

Full text

Abstract:

Introduction. This study examines the age-specific risk factors associated withradicalization that could contribute to Swedish research and responsible investigativeauthorities. Specific knowledge of individual risk factors for radicalization isremarkably limited, especially compared to what we know about other forms ofviolence.Methods. A total of 1240 cases are included after a data cleaning of the PIRUS-dataset. An exploratory factor analysis examined youths (<21), adults (>22), and a noage-specific group.Results. The younger population tends to have more often been abused as a child,had some traumatic experience, and are currently part of a gang. In comparison, theolder population tend to have alcohol or drug abuse problems and more unstructuredtime, have a radicalized friend and have actively searched for their radicalized group.The All-group shares a variety of variables with the age-specific groups.Conclusion. The results imply a need for specified risk factors according to age. Theage-specific analysis provides a deepened understanding of age-specific risk factorsthat contribute to radicalization and make individuals susceptible to radicalizedgroups. Since different authorities are responsible for minors and adults and alreadywork with a risk factor approach, the findings in this essay imply that the authoritiesshould investigate their current policies and update them to age-specific risk factors ifnecessary.

APA, Harvard, Vancouver, ISO, and other styles

20

Mikles, AnnMarie. "Contributing factors of aggression in elementary school age boys." CSUSB ScholarWorks, 1995. https://scholarworks.lib.csusb.edu/etd-project/477.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Johnson, Lori Ann. "The role of activity level for memory in the elderly." CSUSB ScholarWorks, 1997. https://scholarworks.lib.csusb.edu/etd-project/1554.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Cooper, Carolyn L. "Age differences in dispositional attributions and elaborative inferences." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/28964.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Miller, Jo Ann. "Exploratory studies of prospective memory in adults." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30735.

Full text

Abstract:

Prospective memory refers to remembering to carry out an intended or planned action, such as keeping a doctor's appointment or telling a friend about an upcoming party. Despite its importance in everyday life, prospective memory has received little empirical or theoretical attention. Rather, much of the literature has focused on retrospective memory, that is, memory for information learnt in the past. The current literature on prospective memory addresses five aspects that are necessary for carrying out an intended action. These are (a) formulating the plan; (b) having the knowledge necessary to carry out the plan; (c) remembering the plan at the appropriate time; (d) carrying out the plan; and (e) remembering that the plan has been performed. The literature also raises three fundamental questions. Namely, whether prospective and retrospective memory involve different processes, whether self-report and behavioral measures of prospective memory are correlated, and whether prospective memory performance varies as a function of age. These questions were the focus of the exploratory studies presented in this dissertation. The first three studies involved the development of a memory diary, a memory questionnaire, and a metamemory questionnaire, respectively. These instruments were used in the fourth and fifth studies. Studies 4 and 5 also included behavioral measures of prospective memory and objective measures of retrospective memory. The fourth study examined how community-dwelling adults feel about, and use, their memory on a daily basis. In accordance with previous research, no age differences were observed on the behavioral measures of prospective memory. Moreover, performance on the self-report measures did not differ as a function of age. As hypothesized, age was correlated with performance on a retrospective memory task. The fifth study involved an extension and replication of Study 4, with the major addition being the use of several standard laboratory tests to assess retrospective memory. This study revealed several interesting findings. First, in contrast to previous studies, performance on some retrospective memory tasks was related to performance on some prospective memory tasks. Second, by and large, self-report and behavioral measures of prospective memory were not correlated. Third, performance on the prospective memory tasks (both self-report and behavioral) did not vary as a function of age, although performance ' on the retrospective memory tasks was clearly age related. The implications of this research are discussed.
Arts, Faculty of
Psychology, Department of
Graduate

APA, Harvard, Vancouver, ISO, and other styles

24

Lau, Yuet-han Jasmine, and 劉月嫻. "Ageing-related effect on emotion recognition." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B37101730.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Chan, Ka-wai Christina, and 陳嘉慧. "The cost-effectiveness of early screening and treatment for intermediate age-related macular degeneration (AMD)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48422460.

Full text

Abstract:

OBJECTIVE To determine whether grading for AMD during a diabetic retinopathy (DR) screening program would be cost-effective in Hong Kong. METHODS A cost-effectiveness analysis based on a Markov model with six mutually exclusive health states was undertaken. It included grading for AMD and treatment with vitamin therapy for those with intermediate AMD. The outcome of the model was cost per quality-adjusted life year (QALY) gained. A public provider perspective was used. The measures of effectiveness were mostly taken from a local DR screening project except the transition probabilities and the utility values which were taken from overseas data. Costs were mainly taken from the Hospital Authority and salary scale 2009. The main assumptions and estimates were tested in sensitivity analyses. In this model, only subjects with non-sight threatening diabetic retinopathy were included and the possibility of disease regression and treatment benefit for those with advanced AMD were not considered. Both costs and benefits were discounted at 3%. RESULTS The cost per QALY gained through grading for AMD at the time of DR screening and treatment with vitamins of appropriate cases was HK$47,397 after discounting. This would be considered highly cost-effective based on the World Health Organization’s threshold of willingness-to-pay (WTP) for a QALY, e.g. less than the annual per capita GDP HK$300,000. One way sensitivity analyses revealed that the cost per QALY was most sensitive to utility value, discount rate, progression rate from intermediate to advanced AMD, and compliance rate for the treatment. The cost-effectiveness acceptability curve showed that at a WTP for a QALY of $100,000 or more, this AMD screening programme has over 90% of probability of being cost-effective compared with no screening. CONCLUSION Our cost-effectiveness analysis demonstrated that grading for AMD at the time of DR screening among diabetic patients would probably be cost-effective in a Hong Kong public hospital setting.
published_or_final_version
Public Health
Master
Master of Public Health

APA, Harvard, Vancouver, ISO, and other styles

26

Swann, Peter G. "The visual field in age related maculopathy." Thesis, Queensland University of Technology, 1988. https://eprints.qut.edu.au/36726/1/36726_Swann_1988.pdf.

Full text

Abstract:

Age-related maculopathy (ARM) is a leading cause of permanent vision loss in elderly people. ARM therefore constitutes an important public health problem which will increase in magnitude as the number of aged people in the general population becomes greater. The consequences of this condition are exacerbated by the fact that treatment, especially of the geographic or dry form of the disease, is ineffective. While laser photocoagulation may be helpful in the exudative, disciform or wet form of ARM, there is often an inexorable progression towards severe vision loss in these patients. Therefore considerable attention needs to be paid to the aetiology of ARM with the potential for its prevention or delayed onset, and its recognition th rough functional disturbances. This study addressed the character of visual field 1 oss in ARM and compared the efficacy of the Friedmann Visual Field Analyser, Mark II (FVFA), the Autoplot Tangent Screen and Amsler charts in the detection of this loss. Data for a group of subjects with ARM were compared with those for a group of subjects with pre-age related macul opathy (PARM), (that is, ophthalmoscopically visible changes at the macula in the presence of normal vision (6/6)), and also with groups of elderly and young normal subjects. The study has shown that the visual field defects in ARM are predominantly paracentral with a relative sparing of foveal sensitivity. PARM subjects did not show a significant visual field disturbance with the FVFA or Auto plot, however, three PARM subjects did have slight distortions with the standard Amsler chart test. Of the methods used in this study, the Amsler charts may be the preferred method of examination of PARM subjects. Alternatively, an examination with a static, computerised perimeter using coloured stimuli may be used. In the presence of visual field loss in ARM subjects, the FVFA compared well with the Autoplot tangent screen, and highly significant carrel ati ons were found between FVFA neutral density filter settings and equivalent Auto plot target sizes. Similarly, the Amsler charts are a very useful method of investigation of the central visual field and a threshold method of presentation of the test may prove helpful. In the future, most attention should be directed towards detecting early functional disturbances in PARM subjects. Previous research and this study have shown that an investigation of these subjects with high and low contrast visual acuity charts, Amsler charts, the Desaturated D-15 test, and glare recovery tests prove more effective than examination with the FVFA or Auto plot tangent screen. The usefulness of examining these subjects with a computerised perimeter using appropriate stimuli and testing strategies should be thoroughly investigated.

APA, Harvard, Vancouver, ISO, and other styles

27

Woltman, Heather Ann. "Transition-Age Youth in Out-of-Home Care: Predictors of Readiness Skills for Adulthood." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37914.

Full text

Abstract:

Objectives: Youth who age out of the child welfare system are among the most vulnerable group of young people entering adulthood today. Unlike their generational peers, foster youth lack the familial supports necessary to postpone major life decisions and gradually enter adulthood. Although there are notable differences between Canadian and American child welfare contexts, young people exiting both systems experience a compressed transition and are tasked with quickly managing adult responsibilities. Few studies have examined pre-transition factors that correlate with adolescents’ readiness skills prior to exiting out-of-home care. Methods: This dissertation presents two studies that examine factors associated with transition-age foster youths’ readiness skills for adulthood. In the first study I used cross-sectional data (n = 278) from Illinois, United States to assess the impact of adverse childhood experiences (ACEs) on youths’ independent living skills and life domain functioning. I hypothesized that exposure to ACEs would predict lower transition readiness, and that trauma-related stress symptoms and strengths would moderate this association. In the second study I used cross-sectional data (n = 1,026) from Ontario, Canada to identify youth-, placement-, and agency-level factors that predicted youths’ self-care and financial literacy skills. I hypothesized that factors most proximal to individuals would impact readiness (e.g., academic performance, self-esteem). Results: Hierarchical regression analyses indicated that ACEs predicted lower transition readiness. Traumatic stress symptoms moderated these relations, and engagement in risky behaviours partially mediated these relations (study 1). Hierarchical linear modelling indicated that agency-level differences did not impact readiness. In contrast, general linear modelling indicated that a subset of individual- and placement-level factors did impact readiness. Specifically, higher academic performance, higher self-esteem, a greater number of developmental assets, older age, an older age of entry into care, a greater number of placement transitions, and kinship care placement predicted higher transition readiness. A greater number of socioemotional difficulties, a greater number of long-term mental and/or physical health conditions, and a lower frequency of problematic parenting practices combined with a higher frequency of effective parenting practices predicted lower transition readiness (study 2). Conclusion: Findings illustrated that although ACEs exposure predicts lower adult readiness among transition-age youth, whether youth engage in risky behaviours and possess developmental strengths may be better predictors of their readiness to age out of care (study 1). Findings also illustrated that a subset of individual- and placement-level factors predict self-sufficiency skills among transition-age youth (study 2).

APA, Harvard, Vancouver, ISO, and other styles

28

Heller, Janosch Peter Dave. "Transplantation of retinal pigment epithelium in age-related macular degeneration." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708198.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

He, Xiuqing. "The risk factors for tuberculosis in elderly in Guangzhou." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B42994743.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Wood, Nicole R. Lyman Linda L. "Principals under age 30 factors affecting the first year experience /." Normal, Ill. : Illinois State University, 2006. http://proquest.umi.com/pqdweb?index=0&did=1251859851&SrchMode=1&sid=4&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1179157608&clientId=43838.

Full text

Abstract:

Thesis (Ph. D.)--Illinois State University, 2006.
Title from title page screen, viewed on May 14, 2007. Dissertation Committee: Linda Lyman (chair), Beth Hatt-Echeverria, Joe Pacha, Nancy Sherman. Includes bibliographical references (leaves 148-154) and abstract. Also available in print.

APA, Harvard, Vancouver, ISO, and other styles

31

Heaney, Jennifer. "Age, behavioural and psychosocial factors : associations with cortisol and dehydroepiandrosterone." Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/3315/.

Full text

Abstract:

The research in this thesis was concerned with relationships between cortisol, DHEA/S and psychosocial and behavioural factors in relation to age. First, symptoms of depression, anxiety and low social support were associated with higher diurnal cortisol and awakening response in younger adults compared to older adults. Second, younger adults who had a poorer diet were shown to have significantly lower cortisol in the morning period. Third, older adults with poorer levels of physical function were characterised by flatter diurnal profiles of cortisol and DHEA. Fourth, older adults experiencing more severe life events stress had a higher cortisol:DHEA ratio. In addition, under conditions of greater stress exposure, exercise may buffer against the effects of stress on the cortisol:DHEA ratio in older adults. Finally, long term exercise training did not attenuate age-associated hormonal changes in healthy older adults. However, it was shown that an acute bout of exercise can affect hormonal levels in older populations which are influenced by sex. Overall, a range of associations were demonstrated between behavioural, psychosocial and physical factors, which often appear to be mediated by age. These findings suggest that these hormones and their diurnal rhythms are central to various aspects of health and wellbeing.

APA, Harvard, Vancouver, ISO, and other styles

32

Amandola, Debra A. "Factors that contribute to professional women’s employability after Age 65." Diss., Kansas State University, 2018. http://hdl.handle.net/2097/38777.

Full text

Abstract:

Doctor of Philosophy
Department of Adult Learning and Leadership
Sarah Jane Fishback
Over 76 million people between the ages of 65 and 70 years old are making the decision to continue to work or retire. The factors that contribute to professional women’s employability after age 65 who continue to work are important to understand. Many women as they approach age 65 may want to know this information as once you retire, it may be hard to turn back. Also, helping professions in gerontology and other related areas may want to encourage women to continue to work instead of just encouraging them only to retire. Work can help individuals stay healthier and mentally sharp and it takes physical health and mental sharpness to stay employed. There is a mutual benefit. An exploratory qualitative research design was selected to understand the perceptions of how professional women continue to stay employed beyond age 65. Thirteen women (N=13) were interviewed to elucidate specific factors that support delayed retirement. Since longevity and vitality are increasing, extending work life can help individuals age well. Results showed that five themes emerged after an in-depth analysis of the individual interviews, all of which greatly affect each woman’s employability after 65 years of age. These themes discovered were: (a) Enjoyment of Work, (b) Physical Health and Mental Sharpness, (c) Relationships with Work Colleagues, (d) Personal Resilience, and (e) Continuous Learning and Deep Relevant Expertise.

APA, Harvard, Vancouver, ISO, and other styles

33

Jordan, Ann B. "The shuttle effect : the development of a model for the prediction of variability in cognitive test performance across the adult life span." Thesis, Rhodes University, 1998. http://hdl.handle.net/10962/d1008556.

Full text

Abstract:

The aim of this thesis was to investigate inter-individual variability on cognitive task performance in normal older adults. In a review of the cognitive aging literature, the implications of a differential perspective were drawn out in order to establish a theoretical and methodological basis for an investigation into variability. A number of regularly occurring patterns, identified on the basis of available reports in the literature, were used to develop a model of variability (the shuttle model). The empirically-based model was located broadly within a neuropsychological framework, and derived explanatory power from the tenets of brain reserve capacity (BRC) theory. It served to describe the bulge in interindividual variability due to aging (the shuttle bulge), and the shifting occurrence of the bulge in relation to the age axis due to cohort and task-related influences (the shuttle shift). A two phase research study was conducted in order to test hypotheses derived from the model. Phase 1 comprised between-groups analyses of normative data covering a broad range of neuropsychological tests in the domains of attention, memory, language, visual and hand motor skills, in order to examine the progression of variability effects across the adult age range. Phase 2 constituted between and within-groups analyses of normative data from a more limited number of neuropsychological tests. It included the examination of raw score distributions and the characteristics of outliers, and was undertaken to explore more closely the nature of the variability phenomena detected in the first phase of the analysis. Taken together, the results of both phases of the investigation revealed statistically significant variability effects in support of the shuttle model. There was a consistent pattern of increased variability in association with older age regardless of functional modality; frequently, in association with later old age, there was also a subsequent decrease in variability (the shuttle bulge). The age of onset of the initial increase in variability occurred earlier or later (the shuttle shift) as a function of four factors: education, gender, task challenge and age-sensitivity of task. The finding of an earlier onset of variability effects for low education, male gender, high task challenge and high age-sensitivity of task was interpreted in terms of BRC threshold theory. The clinical and social implications of the outcome were discussed with special emphasis on the need for a differential perspective on aging, as a complement to the prevailing normative tradition. It was concluded that the shuttle model has considerable heuristic value. It presents an integrative framework for understanding existing variability data and provides clear indications for future research.

APA, Harvard, Vancouver, ISO, and other styles

34

Tun, Patricia Ann. "Adult age differences in processing different types of text." Diss., Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/28955.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Rogers, Wendy Anne. "An analysis of ability/performance relationships as a function of practice and age." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/30953.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

White, William B. "Development of memory for narratives : effects of encoding variability and age." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/26046.

Full text

Abstract:

Recall of narrative content was studied in a sample of 170 children ranging from 5 to 11 years of age. Age range was divided into three equal intervals. The children within each interval were randomly assigned to four encoding conditions (symbolic, iconic, enactive, and symbolic-rehearsal) so that any effects of interactions between age-affected cognitive capacities and different encoding conditions could be gauged at 30 seconds and one week (after encoding). Between-ages (within condition) and between conditions (within age) comparisons revealed that age increase was generally, though not uniformly, accompanied by significant recall advantage. Analyses revealed that effects of different encoding conditions were sufficiently variable across the ages that age advantage was diminished when free recall performances of 5-7 year old children in enactive and iconic encoding conditions were compared to free recall performances of older children (9-11 years of age) in symbolic conditions of encoding. The results are discussed in relation to theoretical issues and educational questions.
Education, Faculty of
Educational and Counselling Psychology, and Special Education (ECPS), Department of
Graduate

APA, Harvard, Vancouver, ISO, and other styles

37

Friesen, Ingrid Colleen. "Prospective memory functioning in older adults." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0017/NQ44792.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Lineweaver, Tara T. "Beliefs about memory in adults of all ages." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/29583.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

STEBBINS, GLENN THURSTON III. "MEMORY FUNCTIONING IN PARKINSON'S DISEASE: THE EFFECT OF AGE OF ONSET ON HIGH SPEED MEMORY SCANNING." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184223.

Full text

Abstract:

A sample of 25 idiopathic Parkinson's disease subjects and 25 age and education matched elderly healthy control subjects were assessed for their speed of primary memory scanning speed using the Sternberg memory scanning paradigm. In addition, all patients were assessed for cognitive functioning as measured by the Mattis Dementia Rating Scale and the Wechsler Memory Scale. Significant differences were found between Parkinson's disease subjects and control subjects on speed of primary memory scanning, with the parkinsonian subjects performing significantly slower than the control subjects. Increased variability in the measure of memory scanning speed was noted for the parkinsonian subjects as compared to control subjects and different variables associated with increased cognitive disturbances in parkinsonian subjects were investigated as possible sources of this variability. It was found that the majority of variance could be accounted for by the parkinsonian subjects' age of symptom onset. Parkinsonian subjects who developed the disease later in life were significantly slower at primary memory scanning speed than were either parkinsonian subjects who developed the disease earlier in life, or than healthy control subjects. Cognitive variables measuring initiation and perseveration, construction and attention were found to be highly associated with increased primary memory scanning time. The relationship between these cognitive abilities and frontal lobe dysfunction is discussed. Also, the possible relationship between slowing of memory scanning and dopamine depletion is presented.

APA, Harvard, Vancouver, ISO, and other styles

40

MacNeil, Jane Florence. "Selected age-related factors of auditory processing among normal hearing listeners." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ54799.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Paolano, Guido Smith Deborah B. "Factors associated with the perception of the ideal age of retirement." Diss., UMK access, 2008.

Find full text

Abstract:

Thesis (M.A.)--Dept. of Sociology. University of Missouri--Kansas City, 2008.
"A thesis in sociology." Typescript. Advisor: Deborah B. Smith. Vita. Title from "catalog record" of the print edition Description based on contents viewed Sept. 12, 2008. Includes bibliographical references (leaves 67-70). Online version of the print edition.

APA, Harvard, Vancouver, ISO, and other styles

42

Gulledge, Laura M. "GENDER DIFFERENCES IN AGE OF ONSET FOR DELINQUENCY:RISK FACTORS AND CONSEQUENCES." Scholar Commons, 2006. http://scholarcommons.usf.edu/etd/3828.

Full text

Abstract:

The age of onset of delinquency has long been viewed as a primary indicator for further delinquency and criminality. However, studies on the risk factors for onset, and future delinquency have focused predominantly on males. The purpose of this study was to explore gender differences and similarities in risk factors for onset and frequency of arrest. The data used in these analyses were from a longitudinal study, Pathways to Adulthood: A Three Generational Urban Study, 1960-1994. Sixty-six percent (N=1,758) of the eligible children completed the final survey. Of these children, only 515 were used in this particular study because they had documented ages of first arrest. It is hypothesized that 1) female "early" onset occurs at a later age from that of male "early" onset, 2) risk factors predictive of early onset will differ across gender, and 3) "early" onset in females will be predictive of frequency of subsequent arrests.With these data, the author uses OLS regression, logistic regression, and negative binomial regression to evaluate these hypotheses regarding age of onset, risk factors for onset, and frequency of arrest. Insufficient evidence was found to support the hypotheses of the current study. A discussion of the findings, as well as implications and calls for future research are discussed

APA, Harvard, Vancouver, ISO, and other styles

43

Dueck, Katherine. "Children's Saving: Effects of Prompting, Age, and Internal and External Factors." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42729.

Full text

Abstract:

Although saving plays an important role in our everyday lives, including the lives of children, we know little about how this capacity develops, including the factors affecting it and the most effective means to measure it. This study examines the impact of age, a verbal prompt to save, and how internal (children’s inhibitory control, impulsivity, attentional focus) and external factors (household income, parents’ level of education, parents’ saving practices with their child, and parents’ beliefs about the importance of saving) influence both children’s saving in a novel laboratory saving task and parent-reported saving. 187 children between 3 to 7 years of age participated in this study. In the laboratory saving task, which was based on the saving task by Metcalf and Atance (2011), children received tokens that they could exchange for a less desirable reward now, or save for a highly desirable reward three minutes later. Children were assigned to either the “prompt” or baseline condition. Children in the baseline condition only received basic instructions for completing the task, whereas children in the prompt condition received the additional reminder, before beginning the task, that they could save if they wanted to. Parent-reported saving was assessed with a questionnaire, asking parents about their child’s saving at home. The internal and external factors were also measured using questionnaires completed by parents. Results show that assigned condition was associated with whether or not children saved (“saving status”), and that higher inhibitory control and parents’ saving practices predicted increased parent-reported saving. These results show that internal and external factors impact children’s saving behaviour and provides a new paradigm for assessing saving in young children. Implications for future research and limitations are discussed.

APA, Harvard, Vancouver, ISO, and other styles

44

Kopplin, Laura J. "The Identification of Genetic Risk Factors for Age-Related Macular Degeneration." Case Western Reserve University School of Graduate Studies / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=case1251752708.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Owens, Ann M. "Culture, age, gender factors in the early onset of eating disorders /." Instructions for remote access. Click here to access this electronic resource. Access available to Kutztown University faculty, staff, and students only, 1994. http://www.kutztown.edu/library/services/remote_access.asp.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Kopplin, Laura J. "The indentification of genetic risk factors for age-related macular degeneration." Cleveland, Ohio : Case Western Reserve University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=case1251752708.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Martin, Judy K. "Factors associated with BMI-for-age of third and fourth graders." Online version, 2003. http://www.uwstout.edu/lib/thesis/2003/2003martinj.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Tan-Koay, Ava Grace. "Age-related Cataract: Incidence, Modifiable Risk Factors and Gene-Environment Interplay." Thesis, The University of Sydney, 2019. http://hdl.handle.net/2123/21191.

Full text

Abstract:

Abstract Age-related cataract is the leading cause of blindness and visual impairment worldwide in older adults. Although risk factors for cataract have been suggested, the aetiologies of different types of cataract, namely cortical, nuclear and posterior subcapsular (PSC) cataract, remain largely unclear. In particular, there is limited knowledge of potentially modifiable risk factors, such as dietary factors, and of cataract development in Asian populations. Recently, there has been growing interest in the genetics of cataract. It is likely that combination of genetic and environmental factors contributes to the development of cataract. The aims of this thesis are: 1) to determine the incidence and associated risk factors of cataract and cataract surgery in an Asian population; 2) to evaluate associations between dietary factors and cataract; and 3) to explore possible gene-environment interactions in regard to risk of age-related cataract. This thesis used cataract phenotype data assessed by the candidate from two population-based cohort studies: the Blue Mountains Eye Study (BMES) and the Singapore Epidemiology of Eye Diseases (SEED) study. Using data from the Singapore populations, 6-year incidence of cataract and cataract surgery ranged from 8.7% to 14.1%. Important risk factors for cataract and cataract surgery in Asians were diabetes, hypertension and myopia. From the BMES, combination of adherence to dietary guidelines and healthy body weight was associated with decreased risk of nuclear cataract, while higher legume intake was associated with reduced likelihood of incident PSC cataract. Four gene-environment interactions were investigated: 1) AKR1B1 polymorphism and elevated fasting glucose in relation to cortical cataract; 2) MTHFR polymorphism and elevated homocysteine in relation to cortical cataract; 3) SLCO1B1 gene and statin use in relation to incidence of cataract; and 4) FTO polymorphism and low protein intake in relation to PSC cataract. Findings from this thesis contributes to the knowledge of lifestyle (modifiable) factors and possible gene and environment interplays in relation to the risks of age-related cataract. If modifiable risk factors identified are confirmed, therapeutic strategies could be developed to reduce the risk of cataract among older persons, and thus reduce the burden of age-related cataract.

APA, Harvard, Vancouver, ISO, and other styles

49

Rippon, Wendy Leigh. "Age as a Predictor of Factors Involved in Targeted School Violence." ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/3467.

Full text

Abstract:

Targeted school violence (TSV) in the United States is increasing, causing a loss of innocent lives and challenges for teachers and students in building rapport. In addition, TSV increases levels of anxiety and makes it difficult for parents and community members to believe students are safe while at school. Several studies have highlighted the fact that age may be a factor in school shootings, calling for future research to determine if age is indeed influential. The problem is to date age has not been established as a predictive factor, even though the extant research is beginning to identify possible variances. Guided by general strain theory and ceremonial violence, this study determined statistical significance between age and select variables in the personal, event, and ecological categories. This information could be illuminating to educators, mental health professionals, and law enforcement for threat assessment purposes. The information was gathered on all TSV members within the United States from 1966 to 2015 through archival data, and the data were analyzed using logistic regression, Pearson's correlation, and Spearman's correlation. Results indicated that, as age increases, the offenders are more likely to have a higher social status, have a mental health and criminal history, carry out their act in the afternoon, and choose a knife as a weapon. In addition, older offenders are less likely to be students and less likely to have been bullied. Implications for social change include modifications to current threat assessment protocol regarding weapon choice and previous mental health or criminal history, which could be utilized to change public policy for mandatory reporting of students identified as at risk. Also, younger offenders are being bullied more often than older offenders and this could add more awareness to antibullying program procedure and earlier mental health intervention.

APA, Harvard, Vancouver, ISO, and other styles

50

Mills, William Douglas. "The association of aviator's health conditions, age, gender, and flight hours with aircraft accidents and incidents." Oklahoma City : [s.n.], 2005.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic 'Age factors'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles