In a 2 (temperature: hot, cold) x 2 (experimenter: male, female) factorial design, researchers investigated whether ambient room temperature and the experimenter's gender influenced participants' aggression when participants were asked to complete a very boring and time-consuming task. The researchers found that generally, cold rooms incited more aggression than hot rooms. Furthermore, they found that room temperature only mattered when the experimenter was male, but not when the experimenter was female. This example reflects what effects of the independent variables?
A) one main effect
B) two main effects
C) an interaction
D) A and C
E) B and C
F) none of the above

Question

Quizplus · Accepted Answer

The findings show a main effect of room temperature on aggression (cold rooms incited more aggression than hot rooms) and an interaction effect between room temperature and experimenter's gender (room temperature only mattered when the experimenter was male).

In a 2 (Temperature: Hot, Cold) X 2 (Experimenter: Male