A scientist manipulates both the number of people in the group and the type of task the group is working on in the same experiment. He predicts that both variables together influence the dependent variable, such that the influence of type of task is different in the group sizes. Which of the following has the scientist predicted?

Question

Quizplus · Accepted Answer

The scientist has predicted an interaction, which occurs when the effect of one independent variable on the dependent variable changes across the levels of another independent variable. In this case, the influence of the type of task on the dependent variable is predicted to vary depending on the group size, indicating an interaction between the two independent variables.

A Scientist Manipulates Both the Number of People in the Group