Match each the situation that illustrates it with type of extraneous variable that threatens the internal validity of an experiment.
-Students who attend summer camp three years in a row show annual increases on a measure of physical strength.
A) History
B) Maturation
C) Testing
D) Experimental treatment diffusion
E) Statistical regression
F) Differential selection
G) Experimental mortality

Question

Quizplus · Accepted Answer

Maturation refers to the natural or biological processes of growth or change that occur within participants over time. In this scenario, the annual increases in physical strength among students who attend summer camp for three consecutive years could be attributed to their natural growth and development, rather than the summer camp experience itself. This makes maturation a potential extraneous variable that threatens the internal validity of the experiment by providing an alternative explanation for the observed changes.

Match Each the Situation That Illustrates It with Type of Extraneous