A researcher wants to conduct an experiment to examine the effect of looking at fashion models on women's self-image.She has ten women from a psychology class come in and look at female models,and has ten women from a different class look at pictures of regular females.She then measures the self-esteem of the women in both groups.What is the problem with this design?
A) Self-esteem isn't a measure of self-image.
B) Men aren't included in her study.
C) Looking at models has no effect on women's self-image.
D) Participants are not randomly assigned to condition.

Question

Quizplus · Accepted Answer

The problem with this design is that participants are not randomly assigned to conditions. This can result in confounding variables, making it difficult to determine if any observed differences in self-esteem between the two groups are due to the manipulation or other factors. Random assignment helps to ensure that any differences between groups are due to the manipulation of interest.

A Researcher Wants to Conduct an Experiment to Examine the Effect