肥胖儿童对高热量食物的内隐和外显记忆特点

Characteristics of implicit and explicit memory of high-calorie food in children with obese

目的:探究不同年龄肥胖儿童对高热量食物记忆偏向在外显记忆和内隐记忆中的特点。方法:根据身体质量指数(BMI)选取肥胖儿童和正常儿童各51例。通过2(热量类型:高热量/中性热量)×2(BMI类型:肥胖/正常)×2(年级:四年级/六年级)的三因素混合实验,使用加工分离法评估内隐记忆和外显记忆。结果:所有儿童对高热量图片的外显记忆得分高于中性热量图片的外显记忆得分(P<0.01)。四年级肥胖儿童和六年级正常儿童对高热量图片的内隐记忆得分均高于对中性热量图片的内隐记忆得分(P<0.05)。结论:肥胖儿童和正常儿童都对高热量食物的外显记忆有偏向;肥胖儿童在四年级对高热量食物存在内隐记忆偏向,但在六年级不存在这种偏向。

Objective:To explore the characteristics of obese children of different ages on the memory bias of high-calorie foods in explicit memory and implicit memory.Methods:According to body mass index(BMI),51 obese children and 51 normal children were selected.Pass 2(calorie type:high calorie/neutral calorie)×2(BMI type:obesity/normal)×2(grade:fourth grade/sixth grade)three-factor mixed experiment,using process dissociation procedure to evaluate implicit memory and explicit memory.Results:The explicit memory scores of all children for high-calorie pictures were higher than the explicit memory scores for neutral-calorie pictures(P<0.01).The implicit memory scores of obese children in grade 4 and normal children in grade 6 for high calorie pictures were higher than those for neutral-calorie pictures(P<0.05).Conclusion:It suggests that both obese children and nor-mal children have a bias towards explicit memory of high calorie foods;obese children have an implicit memory bias towards high-calorie foods in the fourth grade,but this bias does not exist in the sixth grade.