The only legitimate medical use for cocaine is its use as a(n) ________

Which of the following is a true statement about Mowrer's two-process theory of avoidance learning?

A. It provides an explanation for the development of all anxiety disorders. B. While it suggests mechanisms for the development of generalized anxiety disorder, it does not account for the development of panic disorder or obsessive-compulsive disorder. C. It does not account for the effectiveness of extinction procedures in the treatment of obsessive-compulsive disorder. D. It has not been helpful in explaining why people with obsessive-compulsive disorder develop obsessions in the first place, and why some people never develop compulsive behaviors.

Eric has begun to use two-word sentences and has an expressive vocabulary of about 200 words. About how old is Eric?

A) 18–20 months B) 12–18 months C) 8–10 months D) 12 months