Which of the following threats to experimental validity involves changes to a sample that occur naturally as a result of time?
A)historical flaw
B)maturation
C)regression to the mean
D)testing flaw
E)e.attrition

Question

Quizplus · Accepted Answer

Maturation refers to the natural changes that occur in the subjects over time, which can affect the outcome of an experiment. This can include physical or psychological changes that are not related to the experimental intervention.

Which of the Following Threats to Experimental Validity Involves Changes