A mother brings her five-year-old son to you for an evaluati…

A mother brings her five-year-old son to you for an evaluation.  She reports that since he had an accidental fall where he hit his head, he’s had difficulty with motor coordination.  Your first hypothesis about the part of the brain that may have been injured by the fall is the

You are seeing a family and you notice bruises on the son’s…

You are seeing a family and you notice bruises on the son’s body.  The parents say that their child has been seen by a pediatrician, but that they forgot to mention the bruises to him.  When you ask the parents how the child got injured, the parents say that he “fell down the stairs,” but cannot provide any further details.  The boy is silent and withdrawn and seems afraid of you.  You should

You pour water from a short, fat glass into a tall, thin gla…

You pour water from a short, fat glass into a tall, thin glass.  You ask a child if there is more water in the thin glass than there was in the fat glass.  The child says, “No.  The amount of the water has not changed.”  The child has attained at least the _____________ stage of cognitive development.