______ are natural changes that occur to the participants during the course of a study that can result in bias.
A) History effects
B) Testing effects
C) Group differences
D) Maturation

Question

Quizplus · Accepted Answer

Maturation refers to natural changes that occur to the participants during the course of a study, such as growth and development, that can result in bias. History effects refer to external events that may occur during the study and influence the results, testing effects refer to changes in participants' behavior due to repeated testing, and group differences refer to differences in the characteristics of groups being compared.

______ Are Natural Changes That Occur to the Participants During