One of the most important features of sleep is that its efficiency increases in response to

Carl wasn't always afraid of stoplights, but when he was little he was was kidnapped out of his mother's car while they were stopped at a stoplight. He was recovered within 48 hours. But now, even as an adult, he finds himself avoiding stoplights, and if he can't avoid them, he feels tension mounting. Carl's fear of stoplights is a(n) in the classical conditioning paradigm

a. unconditioned stimulus b. unconditioned response c. conditioned stimulus d. conditioned response

Suicide deaths are rare between the ages of 5 and 14

Indicate whether the statement is true or false