Attentional Bias Toward Body Shape Cues Among Restrained Eaters

Restrictive diet (restricted eater) refers to the long-term dietary restrictions to achieve thegoal of controlling weight or lose weight chronic dieters, and clinical symptoms (such asanorexia and neurological bulimia) compared to the restrictive diet more proportion in thecrowd.Restrictive diet and diet is closely related to the two easy equivalent two concepts, andthey have both similarities exist intrinsic difference.Restrictive diet is thought to predict theoccurrence of eating disorders, and the ability to predict the strength. Reference to negativephysical self, eating disorders, such as the study found that both body image disorder andeating disorders, such as clinical subjects, or a restricted diet, high thin body tend to beindividual non-clinical participants, in the body, body shape or food informationmachining,they have attention bias.They are highly sensitive to this kind of information, andinterpreted the attention bias is sensitive to the attention or information alert of attention, butthere are also studies have found that attention bias may also be caused by the attention dimissdifficulties;And studies have found that there is another component-attention avoid. That is tosay, attention bias may be made up of the following three components: attention alert,attention away difficulties and attention avoid.Between restrictive diet and no restricted diet,in the early days of eating disorders occur, whether there is a cognitive differences of resourcedistribution and the difference performance in which aspect? Is there attention bias only in theoverweight images or to both images related to body weight?If attention bias exist, whatingredients does the attention bias reflects on, is it the first attention alert or attention avoid?Therefore, in behavioral research, we used a modified ECT to explore the potential role ofattentional engagement and attentional disengagement in the context of inhibited anddisinhibited eaters in stimulus presentation duration of200ms and of500ms.This researchadopts the body weight information as stimulus material, pay attention to the change of theattention bias component,we found on the first presention of body shape information(200ms),compared with neutral pictures,restrictive dieters pay more attention to fat and thin figure,analysis from the attention dismiss, over a period of time, cognitive activity is toward thebody image, and in the subsequent attention (500ms), the dieters showed attention avoidationto figure related images.although there are early attention vigilance to bodily form inunrestricted dieters, the difference is that they only avoid attention to the fat figure. In the later period (500ms), the restrictive diet showed difficulties of attention change to bodyimages.When differentiate restrictive dieters into two subtypes (inhibited eaters anddisinhibited eaters), the attention compositions become complicated.In the first stage (200ms)inhibited eaters show the early attention alert to body shape or size chart and the difficult ofattention reverted, analysis shows that the inhabited eaters pay more attention toward the thinfigure.There is no significant differences in attention avoidantion of two kinds of body shapepictures about fat had thin, but in the later period (500ms),they show more attention to avoidthin images.The disinhibited eaters,in the early attention200ms, pay more attention to thinimages and difficulties of attention reverted,and show to the tends to fat images bias.Then thedisinhabited eaters (500ms)pay significant attention avoidance to fat picture. Based on theeye movement technology,we can better record the attention components shift, eye movementexperiment found that restricted diet attention bias process model: early attention fixation,early detection speed and the later attention keep;Compared to neutral pictures to figureimages,the unrestricted dieters also show the directional bias to figure picture, but attentionbias difference is not significant.In conclusion, the restrictive dieters show attention bias to body form images, and theattention mechanism is alert-maintaining to both thin and fat images, rather than therestrictive dieters,the unrestrictive dieters only show awareness-maintaining to the thins, butshow alert-avoidance to fat pictures, this may explain the cause of eating disorders.