Which of the following might be a possible testing threat to the internal validity of a study?
A) A data collector allows some students additional time on a test.
B) Students are tested before and after a film on prejudice.
C) Experimental and control groups are given different instruments.
D) Some students mark answers on the test booklets.

Question

Quizplus · Accepted Answer

Testing threat to internal validity occurs when the pre-test influences the participants' performance on the post-test, as in the case of students being tested before and after a film on prejudice.

Which of the Following Might Be a Possible Testing Threat