The concept of “zone of proximal development” was introduced by ______.

Jen had little to play with as an infant but developed into a curious, intelligent preschooler who concocted toys out of whatever she could find. She is developing her brain through

experience-sculpting. cognitive independence. self-righting. selective attention.

The _____ theory proposes that dreams are thinking while asleep and represent a broad range of the dreamer's _____

a) activation-synthesis; random neural firing. b) evolutionary; threats. c) cognitive; concerns. d) cognitive; repressed wishes.