Some researchers suggest that the most proficient tool users while in captivity are

Schizophrenia is associated with "positive symptoms" that include all of the following EXCEPT

a. hallucinations and delusions. b. good response to medication. c. optimistic prognosis. d. flat affect.

Dynamic systems theorists often use __________________ to understand complex systems of development

A) path analyses B) correlational methods C) models from mathematics and physics D) naturalistic observation