In an experiment, after completing conditioning once, an injection of a drug affecting neuro transmitter substance was given to the affecting neuro transmitter substance was given to the subject. Then, the subject was conditioned again. In this experiment, what were bio-chemical changes treated as?
A. Dependent variable
B. Independent variable
C. Control variable
D. Intervening variable
Answer: Option D
This Question Belongs to Psychology >> Research Methodology And Statistics In Psychology
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