Explain why the existence of an interaction limits the interpretation of the main effects in a two-factor study
What will be an ideal response?
The existence of an interaction means that the effect on one factor depends on the levels of the second factor. Thus, the effect of the factor is not consistent but rather varies as the second factor changes. The main effect for the factor is obtained by averaging over all of the different effects and, therefore, probably does not accurately describe any of them.
You might also like to view...
Karen is dangerously thin and has been admitted to the hospital because of her anorexic condition. The initial goal of treatment will be to ____
a. help her understand that she is in danger of killing herself b. safely restore weight c. begin family therapy sessions d. involve her in a group program with other anorexic girls
What is the only definitive diagnostic test for Alzheimer's disease?
a. CT scan b. Autopsy of the brain c. MRI d. Blood test
The differences between the separate images each eye receives are known as ______
a. retinal disparity c. binocular inversion b. convergence d. stereoscopic vision
When responding to a peer's distress, children __________ rarely express concern and frequently display fear, anger, or engage in physical attacks
A) of permissive parents B) of divorced parents C) who have been physically abused D) of authoritative parents