Stem cells have been used to successfully treat all of the following except:

Explain why Piaget believed that representational thought was necessary for the development of object permanence

What will be an ideal response?

According to dissonance theory, a mother who wants her child to believe that having a clean room is a good thing should

a. keep her own room clean to provide a good model b. provide a mild threat of punishment for having a dirty room c. reward the child with money for cleaning her room d. raise the child's general self-esteem