History is a threat to internal validity that is related to problems associated with ________.
A)a pretest survey
B)variation in data collection procedures
C)the sample
D)the study context
E)the researcher

Question

Quizplus · Accepted Answer

History refers to events that occur during the study period that are unrelated to the treatment but affect the outcome. This threat can arise when the study context changes in some way during the course of the study. For example, if a study on the effectiveness of a new teaching method is conducted over a school year and midway through the study, the school implements a new curriculum that affects all students, it could be difficult to determine whether any changes in student performance are due to the new teaching method or the new curriculum. Therefore, history is related to problems associated with the study context.

History Is a Threat to Internal Validity That Is Related