Which of the Following Factors Is True of Cognitive Development

Which of the following factors is true of cognitive development, and may contribute to childhood amnesia?

A) The emergence of a self-concept does not take place until age 6.
B) The cognitive schemas used by preschoolers are the same as those used by older children and adults.
C) Children form schemas that contain information and cues necessary for recall before starting school.
D) Children's limited language skills prevent them from narrating aspects of experiences to themselves.