When Mohammed's girlfriend unexpectedly broke off their relationship, he said it was just as well because he no longer loved her. Yet, Mohammed did love her unconsciously. Mohammed's response is an example of

Why is classification a necessary first step in developing an understanding of abnormal behavior?

A. Abnormal behavior is not abnormal until it has been classified as such. B. Communication about abnormal behavior cannot be effective unless what is being discussed is clear. C. Only through development of a classification system can abnormal and normal behavior be differentiated. D. Unless an adequate classification system exists, all descriptions of abnormality will necessarily be subjective.

A hypothetical drug that might improve the cognitive functioning of Alzheimer's patients would probably

A) increase levels of acetylcholine. B) increase levels of beta amyloid. C) decrease levels of acetylcholine. D) decrease the activity of all genes that produce ApoE.