Dopamine regulates _____ and, therefore, plays a role in addiction.

What have researchers discovered about the stress hormone cortisol as it relates to children

cared for at home and those attending day care? a. Cortisol is released into the blood stream in equal amounts. b. Children in center base care have increasedcortisol levels from morning to afternoon. c. Children cared for at home have increased cortisol levels when they are with other children as they are less used to such social interactions. d. Home-reared children have cortisol levels that are high in the morning yet decrease by afternoon.

In descriptive statistics, the number that occurs most frequently is called the

A) median B) mean C) mode D) harmonic mean