A Researcher Wants to Examine the Effect of Room Temperature

Multiple Choice

A researcher wants to examine the effect of room temperature on task performance.She places one group of participants in a room that is 54 degrees,a second group in a room that is 72 degrees,and a third in a room that is 90 degrees.She then measures the amount of time it takes each group to complete an identical task.This design would best represent a(n) _______ design.

A) independent groups
B) repeated measures
C) three-group pretest-posttest
D) pretest-posttest