Three-year-old Rachael could not solve a conservation-of-liquid task because she focused on the height of the water. Rachael's thinking is characterized by

Your text has a section on infant directed speech (IDS). Which of the following is the best summary?

a. IDS uses habituation to help infants with morpheme perception and morpheme segregation b. mothers tend to be better at IDS than fathers and this contributes to infants' "mommy preference" c. IDS uses emotional tone and pitch patterns and helps aid language development d. efforts to teach IDS to single mothers in low income communities have succeeded in helping children develop better categorization skills

Dr. Bean believes that language development is a product of inner capacities and environmental influences. Dr. Bean's belief is consistent with the __________ perspective

A) behaviorist B) nativist C) interactionist D) dynamic systems