768PsychologyMedium
Although newspapers reported that a murder victim had been stabbed with a knife, two police investigators knew that the actual murder weapon was a letter openor. While carefully monitoring the changes in heart and perspiration level of a prime suspect, the investigators asked him if he typically used a letter opener on his mail. The investigators were making use of the:
AGuilty knowledge test
BAdaptation-level phenomenon
CTwo-factor theory
DRelative deprivation principle.
Correct answer
A. Guilty knowledge test
Explanation
The correct answer is Guilty knowledge test.