When some event other than the program occurs at the same time and affects the outcome of a study,there is a(n)____ threat.
A)history
B)maturation
C)instrumentation
D)testing

Question

Quizplus · Accepted Answer

History threat refers to an external event that occurs during the study period that can influence the outcome of the study. This could be a natural disaster, a major news event, or a change in policy that affects the participants in the study. Maturation, instrumentation, and testing threats all involve factors internal to the study such as changes in participants' behavior over time or inconsistencies in measurement, whereas history threats come from external sources.

When Some Event Other Than the Program Occurs at the Same