What Is the Independent Variable in the Following Experiment? Professor

Multiple Choice

What is the independent variable in the following experiment? Professor Apollo believes that when people try to block certain thoughts, the thoughts are more intrusive. She randomly assigns participants to two groups; one that must try to prevent thoughts, and one that can think of anything they wish.

A) The gender of the participants
B) The thoughts people had
C) The groups (i.e., thought prevention or think anything) people were assigned to
D) How effective people were at blocking thoughts