Marcus is interested in examining whether attending preschool makes children more extraverted. In designing a study to examine this relationship, which of the following would NOT be a potential extraneous variable?
A) the personalities of participants' classmates
B) the age at which one starts school
C) the personalities of participants' parents
D) whether the participant attends preschool

Question

Quizplus · Accepted Answer

Extraneous variables are those that are not the independent variable but could affect the outcome of the experiment. In this case, whether the participant attends preschool is not an extraneous variable; it is the independent variable that the study aims to examine for its effect on extraversion.

Marcus Is Interested in Examining Whether Attending Preschool Makes Children