easy · MCAT psych-soc

A 5-year-old child is shown two identical rows of five coins. When the coins in one row are spread further apart, the child insists that the longer row now has more coins.

According to Piaget's theory of cognitive development, this child is most likely in which stage and lacks which specific cognitive ability?

  1. Sensorimotor stage; lacks object permanence.
  2. Preoperational stage; lacks conservation.
  3. Formal operational stage; lacks hypothetical reasoning.
  4. Concrete operational stage; lacks centration.

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