Once brain changes have occurred in response to chronic use of a drug, a person may feel the need to continue taking the drug just to feel normal, not even to get "high" from it anymore.

Which of the following is most easily acquired during a sensitive time in development?

a. learning a new sport b. learning a language c. learning new methods of mathematical calculations d. learning concepts of mechanics

For St. Augustine, the primary goal of human existence is to:?

a. ?seek pleasure and avoid pain b. ?accept one's fate c. ?enter into a personal, emotional union with God d. ?engage in active reason