Which type of early psychologist believed that "the whole is more than the sum of its parts"?

Folic acid taken around the time of conception can lower the incidence of __________, and taken during the last 10 weeks of pregnancy cuts in half the risk of __________

A) maternal high blood pressure; premature birth B) anemia; cleft palate C) neural tube defects; premature delivery D) anemia; low birth weight

Which researcher argued that as much as 80 percent of intelligence is a result of heredity?

a) Freud b) Erikson c) Scarr d) Jensen