The research method in which behavior is observed in the field, where it happens, is the

If Josh's uncle has presbycusis, which is NOT an assumption Josh should make about his uncle?

A) Hearing high-pitched tones will be particularly difficult. B) The cause is deterioration in the outer ear. C) Hearing in noisy environments will be worst. D) Social situations may be especially uncomfortable.

Avante is high on a hallucinogen that blocks a subtype of glutamate receptor in the brain. He is displaying aggressive behavior, agitation, disorientation, and a lack of pain response (analgesia). What drug is he using?

a) PC b) Ketamine c) Amanita muscaria d) Salvia divinorum