Cross-sectional research indicated that during early and middle adulthood, aging is associated with levels of intelligence. Longitudinal research indicated that during this period of life, aging is associated with levels of intelligence. Cross-sectional research indicated that during early and middle adulthood, aging is associated with levels of intelligence. Longitudinal research indicated that during this period of life, aging is associated with levels of intelligence.

What is the primary difference between jefferson’s and madison’s beliefs about the bill of rights? jefferson believed that a bill of rights was unnecessary, while madison believed that it was necessary. madison believed that it was important to have a bill of rights to protect against the majority. jefferson believed that that the federal system would protect rights without a bill of rights. madison disagreed with jefferson’s belief that a bill of rights would protect citizens.