Evaluating the Experiment from the Inside: Internal Validity Which variable confounded the Ritchey (1982) study of the effects of age (third-grade, sixth-grade, and adult) and stimulus (words, outline drawings, and detailed drawings) on recall?
A)attention
B)detail
C)distinctiveness
D)visual memory

Question

Quizplus · Accepted Answer

The variable that confounded the Ritchey (1982) study was distinctiveness. This was because the detailed drawings were more distinctive than the other stimuli, making it more likely for participants to recall them. Therefore, the results could not be attributed solely to the effects of age and stimulus on recall.

Evaluating the Experiment from the Inside: Internal Validity Which Variable