Social Psychology 9th Edition by David Myers

تمرين 10

You are interested in finding out the effect that crowding has on people's moods. You conduct a study in a psychology research lab using two types of participants - participants who have to wait in a crowded waiting room before completing a measure of their mood, and participants who wait in an empty room before completing the same measure. Which type of research did you conduct?
A) correlational research
B) experimental research
C) laboratory research
D) both experimental and laboratory research