During a longitudinal self-esteem study conducted at a high school,the experimental group learns that they have to spend an extra half-hour each day reviewing self-esteem building activities while their counterparts in the control group have an extended lunch.Angry about the difference,many students opt to leave the experimental group.This is an example of what form of invalidity?
A)maturation
B)compensatory rivalry
C)instrumentation
D)causal time order
E)testing

Question

Quizplus · Accepted Answer

This is an example of compensatory rivalry because the students in the control group are given an advantage (an extended lunch), which causes them to be more motivated and potentially perform better in the study than the experimental group. As a result, some students in the experimental group may become angry and leave, which can affect the validity of the study.

During a Longitudinal Self-Esteem Study Conducted at a High School,the