The most influential figure in the study of congnitive development

Jean Piaget

Explanation:

Jean Piaget was a Swiss psychologist who did influential work in the field of cognitive psychology and child development.

Piaget’s famous theory of cognitive development explains the phases and nature of human development during the formation years from 0 to 11. It explains how children acquire knowledge, how they perceive the world, and how they construct and use intelligence during the development.

The theory poses four stages:

answer; the liver can process (one standard drink) in one hour;

skyfall is the highest-grossing james bond film.