Final answer:
Duncan and Magnuson conducted a longitudinal study comparing the effects of poverty in early childhood to higher income levels in adulthood.
Explanation:
Duncan and Magnuson (2011) conducted a longitudinal study following children born between 1968 and 1975 comparing the outcomes of individuals who lived in poverty in early childhood to those from families with higher incomes. The study aimed to identify environmental factors associated with income levels and their impact on individuals' lives from childhood to adulthood.
Learn more about Longitudinal study of environmental factors on income here:
https://brainly.com/question/51234420
