People with ___________ personality disorder are sometimes described as "psychopaths" or "sociopaths."

Melatonin, a hormone involved in the regulation of circadian rhythms, is secreted by the pineal gland

Indicate whether this statement is true or false.

___________________ are used by developmental scientists to create hypotheses and identify

variables to be studied. a. Parental suggestions b. Educated guesses c. Theories d. Opinions