From a research perspective, childhood encompasses a very long period. Who wrote the first book emphasizing adolescence as a distinct developmental period?

"Let's try to figure out where clients fall on several key personality traits, rather than using a dichotomous classification system." Someone saying this would MOST likely favor which approach to classifying personality disorders?

A) the traditional DSM-5 approach B) a psychodynamic approach C) a cognitive-behavioral approach D) a dimensional approach

Five-month-old Stewart enjoyed repeatedly shaking his rattle in new and innovative ways in order to hear the different sounds each new movement made. According to Piaget, Stewart is demonstrating a

a. simple reflex. c. secondary circular reaction. b. primary circular reaction. d. tertiary circular reaction.