Most one-year-olds have a well-defined sense of self-concept

A(n) _________ is a person who requires far less than the average eight hours of sleep per night that most people need for optimal functioning

a. insomniac b. nonsomniac c. hypersomniac d. asomniac

Psychedelic drugs include the classical hallucinogens and ketamine and phencyclidine, which are classified as

A) psilocybins. B) dissociative anesthetics. C) dopamine agonists. D) dopamine antagonists. E) both B and D