Brittany is conducting a study in an elementary school. In the morning she collects data about how they feel about their teacher, she asks similar questions right before lunch and receives more negative responses. What threat to internal validity should she consider as a possible reason for this change?
A) regression toward the mean
B) maturation
C) testing
D) history

Question

Quizplus · Accepted Answer

Maturation refers to the natural changes that occur within participants over time. In this case, the change in students' responses could be attributed to their increasing hunger or tiredness as the day progresses, which are natural physiological states that can affect their mood and thus their responses.

Brittany Is Conducting a Study in an Elementary School