Xavier Does a Study in Which He Compares Group Brainstorming

Multiple Choice

Xavier does a study in which he compares group brainstorming to individual brainstorming in face-to-face versus computer-mediated (i.e., chat room) communication conditions. He finds that groups are generally less productive at brainstorming than individuals, but that in chat room conditions, the difference is much less. The fact that the effect of the group versus individual condition depends on which communication medium was used illustrates a(n) ____.

A) statistically significant result
B) correlation coefficient
C) main effect
D) interaction effect