A soldier was injured when a mortar exploded next to him. Although he recovered from his wounds, he is not able to recall information from years ago. What term is used to describe this soldier's condition?

If we are nervous about our personal appearance after adopting a new hairstyle, we are likely to ________ the extent to which others notice our nervousness and we are likely to ________ the extent to which they notice our new hairstyle.

Fill in the blank(s) with the appropriate word(s).

In a heroin user, negative reinforcement of drug-taking behavior can occur when

A. the user overdoses and almost dies. B. the person is trying the drug for the first time. C. withdrawal symptoms are alleviated by another injection. D. the user sees a needle or syringe.