Which neurotransmitter is involved in mood, weight regulation, and sleep induction?

Which theorist explored memory by memorizing nonsense syllables under rigidly controlled experimental conditions?

a) Freud b) Aristotle c) Penfield d) Ebbinghaus

What is the relationship between obesity and social class?

a. There is none. b. Obesity occurs much more frequently in lower social class adults and children. c. Obesity occurs much more frequently in lower social class adults but higher SES children. d. Obesity occurs much more frequently in higher social class adults and children.