A method of studying developmental changes by comparing people of different ages at about the same time is a ________ study

What is true about adoptive households?

A. More babies are given up for adoption today than in years past. B. According to research, adoptive mothers spend less time with their children than others. C. Adoptive families aren't as close as biological units. D. None of the statements is true.

Which of the following statements regarding evaluations of Piaget's theory is FALSE?

A) Piaget tended to overestimate the cognitive abilities of adolescents and young adults. B) Adolescents may not consistently show adolescent egocentrism. C) Children and adolescents often show evidence of being in more than one stage of cognitive development at a time. D) Piaget's ideas concerning the cognitive construction have not been supported by research.