According to several epidemiological studies, approximately __________ percent of individuals have a diagnosable personality disorder, with Cluster __________ disorders being the most common.

According to Piaget's theory, children first show or develop object permanence during the

a. sensorimotor stage b. concrete operational stage c. preoperational stage d. formal operational stage

According to the text, unintended pregnancy is ____ as common among girls who are depressed compared to non-depressed girls

a. half b. equally c. twice d. three times