Questionnaires measuring the Big Five have been particularly helpful in providing diagnostic information for which category of DSM-IV-TR disorders?

Twenty-five percent of adults over the age of 65 are grandparents

Indicate whether this statement is true or false.

How did infant rhesus monkeys that were raised with both an artificial "wire mother" and an artificial "cloth mother" respond to these objects?

a. They became attached to the artificial mother that supplied milk. b. They avoided both mothers except when they were hungry. c. They would not eat or drink, and soon died. d. They would cling to the "cloth mother," especially when they were frightened or startled.