The role of community psychologist has often been described as ____

The process of infant engagement through caregiver imitation is studied by using a __________ paradigm, which is an experimental procedure that disrupts normal infant-caregiver interaction to observe the infant's response.

a) pitch b) medial compression c) perturbation d) loudness e) vocal shimmer f) vocal jitter

Much of the social science research that shaped developmental theories in the past has been done on a narrow sample of people. Which set of descriptors best identifies the narrow sampling?

A. Western, diverse levels of education and diverse economic strata B. World-wide, culturally diverse, young, and poorly educated C. World-wide, well-educated, wealthy, and industrialized D. Western, educated, industrialized, rich, and democratic