| In today's society,weight problems have become a problem for more and more people.Abnormal body weight can not only cause physical diseases(such as high blood pressure,coronary heart disease,etc.),but also bring some psychological problems(such as eating disorders).Individuals' weight changes are inseparable from diet,and the diversity and attractiveness of food are important incentives to change people's weight.Some studies have shown that individuals who are overweight are more concerned with food,especially high-calorie foods(Mela D.,2012;Cast elianos,2009).At the same time,the individual's ability to suppress food cues also affects the weight of the person.Riggs(2010)found that people with poorer inhibition ability may show more obesity behavior.In addition,different emotional states have a certain impact on people's eating activities.Under positive or negative emotions,people's choice of food is more biased,especially in extreme sadness,individuals tend to reduce their food intake(Canetti L.,Bachar E.,Berry E M.,2006).Although previous studies have conducted some useful observations on the food preferences of overweight individuals and the relationship between emotions and individual diets,how different emotional experiences affect the individual's attention to food cues in different body weights still needs further exploration..In this study,eye movementtechnique was used to investigate the effects of emotional valence and food cues on individual bias and inhibition ability of different body mass index through emotional induction.It is hoped to provide some empirical evidence for related diet-weight studies.This study consists of two parts.The study uses a visual point detection task to investigate whether there is a bias in the processing of food cues by different body mass index individuals under emotional induction conditions.The experimental design was 3(subject type: lean body reorganization,normal body reorganization,overweight recombination)× 3(emotional induction: positive emotions,calm emotions,negative emotions)× 2(Photo material: high calorie food picture / non-food Mixed design of pictures,low-calorie food pictures/non-food pictures),in which the type and emotion of the subjects are induced as inter-group variables,the picture material is the intra-group variable,and the dependent variable is the button reaction and eye movement index of the subject's picture material.The eye movement indicator includes the number of times of looking back,the number of gaze,the total gaze duration,and the gaze point gaze time bias score.The study found that individuals with leaner and normal weights pay more attention to low-calorie foods than positive emotional and negative emotions,while overweight individuals are not exposed to food calorievalues.Impact.Study 2 also used the Flanker task to investigate whether there is a significant difference in the ability of individuals with different body mass index to inhibit food cues under emotionally induced conditions.The study used 3(subject type: lean body reorganization,normal body reorganization,overweight recombination)× 3(emotional induction:positive emotions,calm emotions,negative emotions)× 2(inhibition type: consistent reaction,inconsistent reaction)experimental design.The results showed that in the ability to inhibit food cues,the negative weight and partial weight of individuals in the negative emotional state will be better,and after the emotional induction,the individual's ability to inhibit food cues is worse.Through the above two studies,we found that under the condition of emotional induction,individuals with different body mass index have significant differences in attention to food cues,and there are also significant differences in inhibition ability.Positive emotions and negative emotions can actually increase the individual's attention bias behavior,while in the negative emotional state,the lean weight and the overweight body weight individual inhibition ability will be better than the normal weight individual. |
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