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X 0 0 0 1 pt D Question 21 Developmental psychology only studies people while they are infants. O True O False D Question 22 1 p During the children rely on seeing, touching. sucking. feeling, and using their senses to learn things about themselves and the environment. O formal operational stage @) concrete operational stare O picoperational stape sensorimotor stage D Question 23 Nature refers to environmental fourme matuinfluence our behaviour