Exhibit 10-7: Identify the threats to internal validity illustrated in the example below.
-Refer to Exhibit 10-7.The students scored much higher on the posttest because the posttest was easier than the pretest.
A) Instrumentation
B) Experimental mortality
C) Selection-maturation interaction
D) Statistical regression
E) Diffusion

Question

Quizplus · Accepted Answer

Instrumentation threats to internal validity occur when there are inconsistencies in the measurement process, such as changes in the test instrument itself that might affect outcomes. In this case, the posttest being easier than the pretest is a clear example of an instrumentation threat, as the change in the difficulty level of the test could lead to differences in scores that are not attributable to the treatment or intervention being studied.

Exhibit 10-7: Identify the Threats to Internal Validity Illustrated in the Example