Jessica is interested in studying the effects of sibling rivalry on children's self-esteem among families with high stress levels. In this study self-esteem is:

A cartoon shows a child talking on the telephone to grandma. The child holds up a drawing she made and says, "Look what I drew!" What concept described by Jean Piaget is illustrated in this cartoon?

a) egocentrism b) conservation c) assimilation d) object permanence

Exposure treatments for phobias require multiple sessions

Indicate whether the statement is true or false