A ____ source contains original research reports

Which statement concerning language acquisition is true?

a. Imitation alone can account for the learning of grammatical rules. b. Reinforcement alone can account for the learning of grammatical rules. c. Imitation and reinforcement together can account for the learning of grammatical rules. d. Imitation and reinforcement together cannot account for the learning of grammatical rules.

Which of the following statements about Erikson’s theory is true?

a) Each stage builds on previous stages, for better or worse. b) Developing trust in infancy provides a weak foundation for all future social development. c) Mistrust is likely to be problematic only in infancy. d) If adequate love and care are lacking in the first year, infants will mistrust only their first caregiver.