Taking a Broader Perspective: The Problem of External Validity We might increase the external validity of an experiment on color matching that only uses 20 out of 7500 different colors by using
A)aggregation over measures.
B)aggregation over situations.
C)aggregation over stimuli.
D)aggregation over trials.

Question

Quizplus · Accepted Answer

Aggregation over stimuli would involve using a larger and more diverse set of colors in the experiment, which would increase the generalizability and external validity of the results to real-world color matching situations. Aggregation over measures, situations, or trials would not address the issue of limited stimuli in the experiment.

Taking a Broader Perspective: the Problem of External Validity We