Unlike Jean Piaget, Lev Vygotsky viewed cognitive development as a __________ process

The practice of using time-outs, or removal of a person from a situation in which an undesired behavior occurs, was developed by

a) Abraham Maslow. b) Harry Stack Sullivan. c) Arthur Staats. d) Anna Freud.

Which of the following theories sees aging as a process whereby cells are assumed to have a limitation on the number of times they can replicate?

a) wear-and-tear theory b) cellular clock theory c) activity theory d) free radical theory