In terms of internal validity in pretest/posttest designs, history refers to which of the following?
A) previous research studies
B) specific events occurring between the first and second measurements
C) participants who have previously completed the study
D) historical research context

Question

Quizplus · Accepted Answer

History, in the context of internal validity for pretest/posttest designs, refers to specific events that occur between the first and second measurements which could influence the outcomes of the study, independent of the experimental manipulation.

In Terms of Internal Validity in Pretest/posttest Designs, History Refers