Freudian psychoanalytic theory emphasizes the importance of the______________?

A. sample survey
B. participant observation
C. statistical survey
D. experiment

A. late marriage
B. abstinence
C. celibacy
D. all of the above

A. must proceed systematically
B. must occur under controlled conditions
C. yields valid date with classification organization or recording
D. is open to anyone who wants to pursue it

A. nations contain a variety of ethnic and racial groups
B. no global government exists
C. nations do not have common goals
D. all of the above

A. social class
B. religion
C. race
D. residence