Answer:
Because there was insufficient external justification for resisting, Derek began to devalue the forbidden activity
Explanation:
Insufficient theories of punishment are related to the dissonance in which a person feels the lack of sufficient external justification. This is the justification for devaluing for the forbidden things. There was an experiment was done by Aron-son and Carl-smith.
They threaten the child with mild or severe punishment when they play with their favored toys. So that none of the children play with their favored toy when they left alone. But the child who was less threatening has been played with toy more than the children who threatened more.