In a study of the relationship between participant age and memory, the gender of the participant would represent a(n) _____ variable.
A) outcome
B) predictor
C) spurious
D) extraneous

Question

Quizplus · Accepted Answer

The gender of the participant in this study is an extraneous variable because it is not the primary variable of interest (which are age and memory) but could potentially influence the outcome of the study if not controlled for.

In a Study of the Relationship Between Participant Age and Memory