Cosper B A, Hayslip D E, Foree S B
J Sch Health. 1977 Oct;47(8):475-7. doi: 10.1111/j.1746-1561.1977.tb03112.x.
Two fifth-grade classes of 45 students, a majority in the Mexican-American culture, participated in the five month study. One group was taught a series of eight nutrition education units emphasizing weight control while the other group received no nutrition instruction. Pretests and posttests were given to each group and a 24-hour dietary recall was obtained. Findings from the written pretest and posttest showed that the group receiving nutrition instruction learned a significantly (p less than .01) greater number of nutrition concepts than the control group. Dietary intakes revealed that the diets of the experimental group did not improve after nutrition instruction. A majority of postdietary intakes met less than 50% of the RDA.
两个五年级班级，共45名学生，其中大多数是墨西哥裔美国人，参与了为期五个月的研究。一组接受了一系列八个强调体重控制的营养教育单元，而另一组没有接受营养指导。对每组进行了前测和后测，并获取了24小时饮食回顾。书面前测和后测的结果表明，接受营养指导的组比对照组学到了显著更多（p小于0.01）的营养概念。饮食摄入量显示，实验组在接受营养指导后饮食并没有改善。大多数饮食摄入量低于推荐膳食摄入量（RDA）的50%。
