In the early years of young adulthood, the leading cause of death is __________

A psychologist is studying gender relationships in childhood and early adolescence. Students from each grade are separately observed during lunchtime at school in order to assess their seating preferences. The researcher is conducting a _______

a. cross-sectional study. b. longitudinal study. c. single-blind study. d. double-blind study.

Characteristics that distinguish emerging adulthood from other periods begin to develop ____ emerging adulthood and ____

a. before; cease to develop afterward b. before; continue to develop afterward c. after; cease to develop afterward d. after; continue to develop afterward