Which would be the most likely threat to internal validity for children's depression scores on June 6, 1944, also known as D-Day?
A) testing effect
B) instrumentation
C) history
D) sensitization effect

Question

Quizplus · Accepted Answer

The most likely threat to internal validity for children's depression scores on a specific historical date such as June 6, 1944 (D-Day), would be history. This is because external events (in this case, a significant and stressful historical event) could influence the participants' responses or behaviors, thereby affecting the study's outcome.

Which Would Be the Most Likely Threat to Internal Validity