By eight to 12 months of age, infants smile more frequently when another person is nearby. This behavior is called a(n)

According to Vygotsky, what is required for cognitive development?

a. Intellect inherited genetically b. Social interaction c. Age-appropriate problem solving d. Stimulating toys that require problem solving

Children with conduct disorder often see aggression as

a. the best solution without thinking about consequence. b. a last resort. c. their right to pursue somebody. d. the only way to gain respect.