Exhibit 10-10: Identify the major threat to internal validity in the following research studies.
-Refer to Exhibit 10-10.Students who had low scores on a reading pretest were chosen for a special instructional program.This group showed significant gains on a reading achievement test administered after a period of four months.
A) Regression
B) Diffusion
C) Mortality
D) Selection
E) History

Question

Quizplus · Accepted Answer

Regression towards the mean is a major threat in this scenario because students with initially low scores are likely to show improvement towards the average performance level over time, regardless of the special instructional program.

Exhibit 10-10: Identify the Major Threat to Internal Validity in the Following