According to Erikson, the period during which teenagers seek to determine what is unique and distinctive about themselves is known as the

Michelle and Deana are arguing about the relative benefits of breastfeeding and bottle feeding. Which of their arguments is most valid?

a. Michelle's claim that breastfed babies are ill less often because breast milk has the mother's antibodies in it. b. Deana's assertion that bottlefed babies are less likely to have diarrhea and constipation. c. Michelle's argument that breastfed babies' psychological development is enhanced. d. Deana's belief that bottlefed babies make the transition to solid foods more easily.

A professor wants to examine the effectiveness of a new teaching approach. Her 9:00 a.m. class will be exposed to the new method of viewing teaching tapes, while her 10:00 a.m. class will be exposed to traditional lectures

Students will be able to choose which tapes they want to view. What method is the professor using to conduct her experiment? a) hypothetical b) biological c) environmental d) scientific