easy · MCAT psych-soc

A developmental psychologist observes a child who insists that a tall, thin glass contains more water than a short, wide glass, even though the child saw the water being poured from the second glass into the first. This child is demonstrating a lack of:

  1. Object permanence.
  2. Symbolic thought.
  3. Conservation.
  4. Egocentrism.

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