If Dr Ryan, a Social Psychologist, Was Investigating the Relationship Between

Multiple Choice

If Dr. Ryan, a social psychologist, was investigating the relationship between temperature and participants' moods, an example of an extraneous variable would be:

A) how hot it is in the study room.
B) how cold it is in the study room.
C) self-reports of how happy or sad one feels.
D) the time of day the study takes place.