The Carolina Abecedarian Project focuses on
a. infants at risk for low intellectual functioning.
b. the academic abilities of inner-city high school students.
c. preschool children from disadvantaged families.
d. the influence of heredity on intellectual performance.
Question 2
The ________ is the co-occurrence of historical factors with changes in age that affects the ability to determine the results of a longitudinal study.
a. cohort effect c. age-history confound
b. era-specific confound d. cohort-era effect