Jill was born in 1967 and is part of a group of people who graduated from high school in the 1980s and 1990s. developmentalists call such a group a(n) . cross-section.
b. cohort.
c. age group.
d. developmental context.

What is the main difference between hearing and listening? a) hearing is easy; listening is hard. b) hearing involves the outer ear; listening involves the inner ear. c) hearing is the physical activity; listening involves processing the information. d) none of the above