Avery Is Investigating Whether the Changes in Intelligence That Can

Multiple Choice

Avery is investigating whether the changes in intelligence that can happen as we age are attributable to childhood environmental conditions.He begins by testing the intelligence of a large sample of 8-year ol children,and then he thoroughly assesses each child's environmental conditions.He then plans on re-testing the intelligence of each participant every 2 years for the next 10 years.Avery is using a ___ research design.

A) cross-sectional
B) correlational
C) sequential
D) longitudinal