If the brain of an infant overproduces stress hormones early in life, the brain becomes incapable of normal stress responses

During the _____ stage of development, a child will not have developed object permanence

A) preoperational B) sensorimotor C) concrete operational D) formal operational

Basil and Derin are both playing in the sandbox. Basil is making a sandcastle and Derin is making roads, so that he can drive his matchbox cars. Their interactions consist of sharing and borrowing toys. This is an example of

a. associative play. c. constructive play. b. cooperative play. d. parallel play.