The hallmark of postformal cognition is intellectual

Research demonstrates that early make-believe play is

A) less frequent and rich in collectivist cultures than in individualistic cultures. B) the combined result of children's readiness to engage in it and social experiences that promote it. C) usually initiated by toddlers rather than their parents or older siblings. D) discovered by toddlers independently, once they are capable of representational schemes.

The surgical procedure of cutting the corpus callosum is done in cases of

a. communication problems. b. severe epilepsy. c. injury or stroke. d. split personality.