Which statement describes a common consequence of intense reward system activation in substance use disorders?

Which statement describes a common consequence of intense reward system activation in substance use disorders?

• A. It improves focus on routine tasks
• B. It can cause normal activities to be neglected
• C. It enhances memory for non-substance tasks
• D. It reduces craving when substances are not present

Answer: (B)

Intense activation of the brain’s reward system makes drug-related rewards extremely salient, so the driven behavior shifts toward obtaining and using the substance. Because this system assigns priority to the drug, normal activities like work, school, relationships, and hobbies often feel less rewarding and are neglected. This pattern of neglect is a common outcome and helps explain why functioning can deteriorate with continued use, reinforcing the cycle of dependence. The other ideas don’t fit as well: routine tasks don’t become the focus, memory for non-substance tasks isn’t typically enhanced by this reward surge, and craving isn’t reduced when substances aren’t present—craving and withdrawal-related processes can actually maintain or heighten the urge to use.

Intense activation of the brain’s reward system makes drug-related rewards extremely salient, so the driven behavior shifts toward obtaining and using the substance. Because this system assigns priority to the drug, normal activities like work, school, relationships, and hobbies often feel less rewarding and are neglected. This pattern of neglect is a common outcome and helps explain why functioning can deteriorate with continued use, reinforcing the cycle of dependence. The other ideas don’t fit as well: routine tasks don’t become the focus, memory for non-substance tasks isn’t typically enhanced by this reward surge, and craving isn’t reduced when substances aren’t present—craving and withdrawal-related processes can actually maintain or heighten the urge to use.