Final answer:
Jerrod's experience is an example of a negative income effect and operant conditioning, where his decreased weekly allowance due to talking back affects his purchasing behavior.
Step-by-step explanation:
Jerrod no longer talks back to his parents because they have started reducing his weekly allowance by $1.00 every time he does so. This is an example of a negative income effect, which occurs when a decrease in income leads to a reduction in consumption of goods. In the context of behavioral psychology, it could also be seen as a form of operant conditioning, where Jerrod's behavior is shaped by the consequences of that behavior, in this case, the financial penalty for talking back leading to a reduction of his budget for normal goods.