Dr. Berry hypothesizes that consumption of sugar is a direct cause of children\'

Question

Dr. Berry hypothesizes that consumption of sugar is a direct cause of children's misbehavior. To test this hypothesis, he enlists the assistance of a teacher in a preschool setting to give half of the children snacks and drinks that contain sugar and give the other half of the children similar snacks and drinks that are sugar-free. Dr. Berry then counts the number of children's misbehavior in each condition. He conducts some of his observations in the morning and some in the afternoon after naptime. The validity of Dr. Berry's design has potentially been compromised by a confounding variable. What factor represents a potential confound? the teacher's gender time of day of the observations caloric value of the snacks age of the teacher

Explanation / Answer

answer is caloric value of snacks. Here, they have used snacks and drinks to test the hypothesis which have difference in caloric values. It is not necessary that both snacks and drinks have equal caloric values. And if this variable is different, one can not examine the effect of sugar on children behavior precisely.

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