By the end of high school, _____ percent of U.S. young people have tried at least one highly addictive and toxic substance

Whereas Piaget viewed cognitive development as the result of the child's own exploratory actions, Vygotsky believed that cognitive abilities develop

a. as a result of the child's mental representations rather than physical actions b. only after children learn to use language to communicate c. in sociocultural contexts and through social interaction d. as a result of brain maturation

Of the total money spent every year on child maltreatment in the United States, what

percentage is dedicated to prevention? a. 10% b. 25% c. 30% d. 50% e. 75%