Дисертації з теми "Children's food tastes"

Little is known about how liking for different foods develops from birth to adulthood. Although there are both cultural and sensory aspects to the development of food preferences, the focus of this study is on the sensory aspects of food preference development, in particular, preferences for meat. Two main aims are addressed : 1/. To develop a robust methodology that can be used to determine pre-literate and recently literate children's liking for different foods and the determinants of that liking. 2/. To investigate the effects of early experience with foods on later food preferences.Several tests were conducted and results noted. Overall the results of this thesis show that it is possible to gather reliable hedonic data from young, even pre-school children, and that it is possible that very early feeding experience has some influence on adults' food preferences.
Doctor of Philosophy (PhD)

Individuella smakupplevelser varierar stort och är delvis beroende av hur väl och intensivt individen kan urskilja grundsmaker. Jämfört med vuxna uppvisar barn en högre preferens för sött och starkare aversion mot bittert. Syftet med denna studie var att undersöka 4-6-åriga förskolebarns förmåga att identifiera grundsmaker i livsmedel före och efter träning med grundsmaklösningar. Även barnens förmåga att verbalisera smakupplevelser innan grundsmakträning undersöktes. Studien genomfördes på en förskola, totalt elva barn deltog i studien som bestod av fyra moment. En gruppdiskussion om (grund)smaker, provsmakning av tio olika livsmedel med fortsatt samtal om vad dessa smakade. Tredje momentet var träning med grundsmaklösningar där barnen fick öva på att känna igen sött, surt, salt, bittert och umami. Sista momentet var ett grundsmaktest där barnen fick svara vilka grundsmaker de kunde identifiera i varje livsmedel. Resultaten visade på en signifikant skillnad förmåga att uppfatta salt jämfört med övriga grundsmaker, samt en markant ökad förmåga att både identifiera och verbalisera samtliga grundsmaker i livsmedel efter grundsmakträning. Från att ha benämnt ”gott” och ”äckligt” som smaker kunde barnen efter träning i större utsträckning sätta ord på och identifiera flera olika grundsmaker i livsmedlen de smakade. En kort grundsmakträning är en enkel metod som kan bidra till att få små barn att inta ett positivt, nyfiket förhållningssätt till nya smaker och mat i allmänhet.
Individual experiences of taste differs greatly and is partially due to both the ability to detect basic taste and the intensity at which it is interpreted. Compared to grown-ups, children tend to show a higher preference toward sweet and a greater aversion towards bitter. The purpose of this study was to examine 4-6-year old pre-school children’s ability to identify basic tastes in food before and after training with basic taste solutions. The children’s ability to articulate their taste experiences were also studied before basic taste training. The research were conducted at a single pre-school, eleven children participated in the study which involved four different parts. A group discussion about (basic) tastes, testing of ten different foods accompanied by continued conversations about what the food tasted like. The third part was training with basic taste solutions where the children got to practice recognizing sweet, sour, salty, bitter and umami. The last part were a basic taste test in which the children were asked to answer what basic tastes they could identify in each food. The results showed a significant difference in the children’s ability to identify salty tastes compared to other basic tastes, also a notably improved ability to detect and articulate all basic tastes after basic taste training. The children went from naming “tasty” and “disgusting” as tastes, to being able to put words on, and identify, many of the basic tastes in each food. A short training session with basic tastes is a simple method which can benefit young children by contributing to a more positive and curious approach towards new flavours and food in general.

Research on adults has shown that when certain energy dense foods (EDF) are marketed as ‘healthy’, consumption of these foods increases during a single eating occasion. However, the effect health claims can have on consumption and taste in pre-adolescent children is largely unknown. The main objective of this thesis was to examine how health claims influence energy intake (EI) and liking in pre-adolescent children. A between-subject experimental design was used, whereby 66 participants (34 girls and 32 boys, mean ± SD age: 10.5 ± 1.4 years), consumed a chocolate milkshake while watching specific videos on YouTube ® for 20 minutes. The participants were randomly assigned in equal numbers split into one of two groups. For one group (control), no label was added and nothing was said about the milkshake. In the experimental (health claim) group, the milkshakes were labeled and presented as “high in calcium, and healthy”. The primary outcomes were EI and liking of the milkshake, while appetite sensations were also assessed using visual analogue scales (VAS). Results from Analysis of Covariance (ANCOVA) indicate that compared to the same shake without a health claim, a chocolate milkshake that was advertised as healthy was perceived as healthier, although there was no effect on EI or taste. When sex was investigated, boys consumed significantly more calories than girls when the milkshake was advertised as healthy. The higher EI from boys in the ‘healthy’ condition suggests a health claim may elicit different food consumption behaviors between sexes. In addition, the participants from the experimental (healthy) group who rated the milkshake as highly healthy consumed significantly more calories than those from the same group who only rated the milkshake moderately healthy. Further research is needed to better determine the effects of different health claims on children’s taste and EI, and to corroborate these initial findings and examine the underlying reasons for the observed sex differences.

Introduction: Currently, 1 in 7 children are classified as obese, which represents an obesity rate two times higher than that of the last 25 years. Part of the solution to address the positive energy balance underlying weight gain is to target the specific eating behaviours and factors that lead to food intake. One widely used tool to measure eating behaviour is the Three-Factor Eating Questionnaire (TFEQ). Objective: The primary objective of this study was to validate scores of the 21-item Child version of the Three-Factor Eating Questionnaire (TFEQ-R21 C), by examining validity evidence and reliability of TFEQ-R21 C responses in a sample of Canadian children and adolescents. The secondary aim was to examine the associations between the TFEQ-R21 C factors and body mass index (BMI) z-scores and food/taste preferences. Methods: The participants consisted of a sample of 158 children, 63 boys (mean age: 11.5 ± 1.6 years) and 95 girls (mean age: 11.9 ± 1.9 years), recruited from English schools in the Ottawa area. To assess eating behaviour, participants filled out the TFEQ-R21 C, the Power of Food Scale, and the Leeds Food Preference Questionnaire. Height and weight measurements were taken using a stadiometer and a digital scale. An exploratory factor analysis with oblique rotation and an item analysis were conducted to determine the factor structure and validity of the questionnaire. A median split on Cognitive Restraint (CR), Internal Uncontrolled Eating (UE 1), External Uncontrolled Eating (UE 2), and Emotional Eating (EE) was used to dichotomize factor-based scores into high and low categories for each factor, to allow for group comparisons. Bivariate correlations explored relationships between weight, BMI and BMI z-score, and food and taste preference, by sex and age group. To determine if BMI, BMI z-scores, and food/taste preferences were associated with factor scores of the TFEQ-R21 C, two-way ANOVAs were conducted. Results: The exploratory factor analysis replicated the Emotional Eating (EE) and Cognitive Restraint (CR) scales of the original TFEQ-R21, whereas the global factor of Uncontrolled Eating (UE) produced two subscales: Internal Uncontrolled Eating (UE 1) and External Uncontrolled Eating (UE 2). Item 17 did not load onto any of the factors and was subsequently removed. The four-factor model, with item 17 removed (FFEQ-R21 C: 20-item Child version Four-Factor Eating Questionnaire), accounted for 41.2% of the common variance in the data and showed good internal consistency (α= 0.81). The factors of UE 1 (r= 0.27, p<0.001), UE 2 (r= 0.36, p<0.0001), and CR (r= 0.20, p= 0.04) correlated significantly with EE. Younger children reported higher UE 1 scores [F(1,143)= 3.99, p=0.048, f2= 0.028] and CR scores [F(1,143)= 3.99, p= 0.001, f2= 0.089]. Boys who reported a high UE 1 scores had a significantly higher weight [F(1,58)= 6.44, p=0.014, f2= 0.117 ] and BMI z-scores [F(1,58)= 4.45, p=0.039, f2=0.083], compared to those who reported low UE 1 scores. Children with overweight or obesity [F(1,143)= 2.75, p<0.001. f2= 0.035] reported higher EE scores, compared to children of normal weight. Children with high UE 1 scores reported greater preference for high protein and fat foods, and high fat savoury (HFSA) and high fat sweet (HFSW) foods, compared to those with low UE 1 scores. Higher preference for high protein, fat, and carbohydrate foods, and HFSA, HFSW, and low fat savoury foods (LFSA) foods was found in children with high UE 2 scores, compared to those with low UR 2 scores. Children and adolescents with low CR scores reported greater preference for high protein, carbohydrate, and fat foods, compared to those who reported high CR scores. Discussion: This study showed adequate reliability and validity evidence of the TFEQ-R21 C scores, and that the questionnaire is best represented by a 20-item four-factor model in our sample. The FFEQ-R21 C was able to identify relevant eating behaviour traits associated with higher BMI z-scores and food preferences in both sexes and age groups, which were mainly in accordance with previous findings in children and adolescents. These results support the utility of the questionnaire for the assessment and identification of problematic eating behaviour and food preferences in the Canadian pediatric population. Younger children reported higher influence of the psychological constructs of eating behaviour (CR, UE 1, UE 2, and EE), compared to older children. This study provides preliminary evidence that FFEQ-R20 is a reliable and valid self-report tool to measure eating behaviour in children and adolescents to characterize those at higher risk for excess weight. However, further research is needed to examine the validity of the questionnaire in larger samples and in other geographical locations across Canada, as well as the inclusion of extraneous variables such as parental eating behaviour, socioeconomic status, and physical activity levels.

Il a été largement démontré que la saveur sucrée était la saveur la plus appréciée chez les nouveau-nés et que cette attirance demeurait élevée tout au long de l’enfance et de l’adolescence. Il semble primordial de mieux caractériser le comportement alimentaire des enfants pour cette saveur en s’intéressant au rôle joué par les expériences alimentaires et aux apprentissages qui en découlent dans la mise en place de l’attirance pour les aliments et boissons sucrés. Pour répondre à cette problématique nous avons allié une approche comportementale et une approche en imagerie cérébrale (IRMf) chez les enfants de 7-12 ans afin de caractériser leur comportement alimentaire envers la saveur sucrée. Les résultats montrent peu de liens entre expositions à la saveur sucrée et attirance pour la saveur sucrée. Cependant, l’attirance pour la saveur sucrée est fortement associée à la quantité de glucides simples consommés en situation de libre choix. De plus, les sucres caloriques jouent un rôle renforçateur dans l’apprentissage de l’appréciation d’une flaveur nouvelle et l’exposition répétée à des boissons sucrées et édulcorées permet aux enfants d’apprendre à compenser l’énergie consommée aux repas suivants l’ingestion des boissons. La compensation n’est cependant que partielle. Enfin, les analyses en IRMf suggèrent que plus les enfants sont exposés aux boissons sucrées moins il y a d’activation en réponse aux sucres au niveau de régions du circuit de la récompense. Par une approche originale, ces travaux ont permis de mieux caractériser l’attirance des enfants pour la saveur sucrée et soulignent le rôle des apprentissages dans la mise en place des préférences alimentaires
It has been widely demonstrated that infants have a higher preference for sweetness than for any other tastes and that sweetness attraction remain high throughout childhood and adolescence. Therefore, better characterizing children’s eating behavior toward sweetness by evaluating the role of food experiences and learning in the development of children’s attraction toward sweet foods and drinks seems essential. To better address this issue behavioral and brain imaging (fMRI) protocols were combined in 7 to 12 year-old children in order to characterize in different ways their eating behavior toward sweetness. Results showed few links between early and current sweetness exposure and attraction toward sweet taste. However, attraction toward sweet taste is strongly associated with simple carbohydrate intake in a free choice buffet. Moreover, nutritive carbohydrates play a reinforcing role in food learning in terms of children’s food liking. Children’s capacities to compensate the calories consumed in a preload drink are learned after repeated exposures to caloric and non-caloric drinks. However, caloric compensation remains uncomplete. Furthermore, fMRI data suggest that sweet drink exposure could lead to decreased activations in regions involved in food reward. Using an original methodological approach, the present work resulted in a better characterization of children’s attraction toward sweetness. Moreover, these results give an interesting insight regarding the role of experiences with sweet foods and drinks during childhood in the development of children’s food preferences

Little is known about how liking for different foods develops from birth to adulthood. Although there are both cultural and sensory aspects to the development of food preferences, the focus of this study is on the sensory aspects of food preference development, in particular, preferences for meat. Two main aims are addressed : 1/. To develop a robust methodology that can be used to determine pre-literate and recently literate children's liking for different foods and the determinants of that liking. 2/. To investigate the effects of early experience with foods on later food preferences.Several tests were conducted and results noted. Overall the results of this thesis show that it is possible to gather reliable hedonic data from young, even pre-school children, and that it is possible that very early feeding experience has some influence on adults' food preferences.

Field lab in marketing: Children consumer behaviour
This research explores on-package nutrition claims as a way to transmit nutritional information and to promote children’s choice of healthy food. The influence of two formats of a nutrition claim - in verbal and visual form – and of a general claim assuring tastiness were analyzed on children and adults’ attention to the nutrition claim, attitude toward the product, perceived healthiness and purchase intention. A sample of 233 children aged between 7 and 11 years and 194 adults completed structured questionnaires. Results suggest that nutrition claims influence children’s perceptions but do not affect overall attitudes or behaviors. A visual nutrition claim grabs children’s attention and increases the perceived tastiness and healthiness, a perception that a claim assuring tastiness distorts. Regarding adults, the nutrition claim in verbal form, with or without the general claim, has negative effects on the purchase intention. Managerial contributions and implications for policy are discussed.

碩士
朝陽科技大學
幼兒保育系碩士班
101
Background：Research found that young children have different preferences with different food packaging. They like the food cartoon packaging more than the food packaging without cartoon pictures on. Research has also pointed out that the food packaging or appearance does not affect children''s food preferences. Therefore, this study aimed to investigate cartoon characters on children''s food preferences influence, cartoon characters and then discuss whether the packaging can enhance children''s food preferences. Methods：According to the public and private kindergartens in Taichung, their ages are from three to six. There are ninety children in total. Respectively cartoon character pattern transparent bags of food packaging and food packaging to wrap carrots, whole wheat oat biscuits, fried potato chips. After they tasted the food with cartoon character pattern bags, the young children answered the extent of food preferences and selected more inclined to liking food packaging. Results：The results showed that use of cartoon characters drawing-packaged food and whole wheat oatmeal cookies will affect children''s food preferences and choices, especially for the more significant transparent bag packing carrots, whole wheat oatmeal cookies preferences. However, fried potato chips with cartoon characters or transparent bag packing, there isn’t too different with children’s preference. The most of children think that have cartoon character pattern packaged food is more delicious than transparent bag packing food and children like the packaging carrot cartoon character with the original preference for carrots significant positive correlation. The packaging carrot cartoon characters can enhance children''s preference for the carrot. Conclusions：80% of the children felt cartoon character pattern packaged food is more delicious than transparent bag packing food. The results showed cartoon characters packaged foods help improve children''s preference for healthy food and it also can help children develop the habit of eating a healthy food.

Background: The relationship between fruit and vegetable (FV) exposure, preference, and consumption among children has been a targeted topic of study due to the increasing prevalence of childhood obesity. The purpose of this study was to examine FV home exposure in elementary children and the selection of both fruits and vegetables and less familiar lunch entrées at school. Design: Cross-sectional data on 3rd, 4th, and 5th grade students (N=59) from an elementary school in central Texas. Methods: Home and school FV exposure was collected via self-report using a six-item questionnaire. Students were placed into high and low groups for 1) the variety of FV offered at home, and 2) the variety of FV eaten at home. Absolute and relative ratings of eight lunch entrées were collected through taste-tests conducted at school. Results: Differences in the consumption of FV at school and the selection of lunch entrées between high and low groups were analyzed using Mann-Whitney U independent non-parametric tests. Results indicated that the distribution of consumption at school differed across high and low groups for parental offering of FV for: oranges (z=2.16, p<0.05), cucumber (z=2.44, p<0.05), pineapple (z=3.41, p=0.001), mandarin oranges (z=2.93, p<0.01), tomato (z=3.14, p<0.01), and broccoli (z=3.26, p=0.001). The distribution of consumption at school across high and low groups for the eating FV at home was significant for 10 out of the 11 FV items: oranges (z=2.24, p<0.05), cucumber (z=2.64, p<0.01), pineapple (z=4.19, p<.001), mandarin oranges (z=3.06, p<0.01), tomatoes (z=3.47, p=0.001), bell pepper (z=2.25, p<0.05), broccoli (z=4.00, p<0.001), melon (z=3.06, p<0.01), apples (z=2.79, p<0.01), and zucchini (z=2.27, p<0.05) Likewise, significant differences between high and low groups for parental offering of FV were found for the selection of the chef salad (z=2.546, p<0.05), the Greek salad (z=2.091, p<0.05), and the veggie humus plate (z=2.104, p<0.05). Absolute and relative ratings of eight lunch entrées are also reported. Conclusions: Children who are more frequently exposed to FV at home consume a wider variety FV at school and are more likely to select healthy, less familiar entrées at school lunch.
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Yes
Objective: To examine score validity and reliability of a Child version of the 21-item Three-Factor Eating Questionnaire (CTFEQ-R21) in a sample of Canadian children and adolescents and its relationship with body mass index (BMI) z-scores and food/taste preferences. Design: Cross-sectional study. Setting: School-based. Subjects: 158 children, 63 boys (11.5±1.6 years) and 95 girls (11.9±1.9 years). Results: The exploratory factor analysis revealed that the CTFEQ-R21 was best represented by four factors with item 17 removed (CFFEQ-R20) representing Cognitive Restraint (CR), Cognitive Uncontrolled Eating (UE 1), External Uncontrolled Eating (UE 2), and Emotional Eating (EE) and accounted for 41.2% of the total common variance, with good scale reliability. ANOVAs revealed that younger children reported higher UE 1 scores and CR scores compared to older children, and boys who reported high UE 1 scores had significantly higher BMI Z-scores. Children with high UE 1 scores reported a greater preference for high protein and fat foods, and high-fat savoury (HFSA) and high-fat sweet (HFSW) foods. Higher preference for high protein, fat, and carbohydrate foods, and HFSA, HFSW, and low-fat savoury foods was found in children with high UE 2 scores. Conclusions: This study suggests that the CFFEQ-R20 can be used to measure eating behaviour traits and associations with BMI z-scores and food/taste preferences in Canadian children and adolescents. Future research is needed to examine the validity of the questionnaire in larger samples and in other geographical locations, as well as the inclusion of extraneous variables such as parental eating or socio-economic status.