Whereas a ______ study takes time to complete because researchers must wait for the participants to age, it allows researchers to compare ages quickly with the first testing of the different-aged samples.

In which part of the U.S. do most African Americans live?

A) Northeast B) West C) Midwest D) South

According to Gisela Labouvie-Vief, adolescents and many young adults are confined to formal operations and do not possess postformal operational thought because they ____

a. are often limited by their egocentrism and concrete-operational thoughts b. often lack the ability to coordinate their sensory modalities with motor skills c. often exaggerate the extent to which logical thinking can be applied to real-life situations d. are often cognitively unaware of how personal fables and an imaginary audience affects egocentric thought