Children Are More Capable at an Earlier Age Than Piaget's

Children are more capable at an earlier age than Piaget's account would lead us to believe. Piaget underestimated children's cognitive abilities because he __________.

A) used language that the children could readily understand
B) designed tasks that children found fun and inviting
C) tended to concentrate on children's deficiencies instead of their competencies
D) made careful observations of children's behavior