Spermatogenesis typically begins at about ___ years of age

Erik Erikson believes that midlife involves a psychosocial crisis involving characteristics of a. trust versus mistrust

b. generativity versus stagnation. c. industry versus inferiority. d. identity versus role confusion.

Which term describes the behavior of interest in a research study that is observed in the study?

A. variability B. dependent variable C. independent variable D. confidence interval