Variations in the independent variability due to fatigue is an example of a threat to internal validity called:
A)History
B)Maturation
C)Testing
D)Selection

Question

Quizplus · Accepted Answer

Variations in the independent variability due to fatigue is an example of maturation.
Maturation refers to such biological or psychological causes as hunger, boredom, or fatigue that cause changes within the participants as a function of time. History refers to changes that take place outside of the experimental setting while the dependent variable is being varied. Testing refers to situations in which subject's taking a test change the results of a future test. Selection refers to situations in which subjects are selected to the groups in an incorrect way.

Variations in the Independent Variability Due to Fatigue Is an Example