A(n) _________ is a mental organization of information (i.e., a knowledge structure)

If I want to know whether successive cohorts show the same pattern of decline in frequency of close friendships in their 30s, which research design should I use?

a. time-lag b. sequential c. longitudinal d. cross-sectional

Some propose infants have a preference for sweet tasting items as an adaptive principle because ____

a. adults have a preference for sweets b. sweet things have more calories c. breast milk is slightly sweet d. they have an aversion to bitter foods