Hugh enjoys playing with your keys.  When you take them away and place them in your pocket, Hugh does not search for them.  Piaget would say that Hugh does not understand:

By 10 months of age, Alan has a vocabulary of a dozen words.  B.F. Skinner would have attributed Alan’s rapid speech development mainly to his:

Unusual swelling of a toddler’s face and abdomen and thin, colorless hair are symptoms of:

The sense that is the least developed at birth is:

Basically, the Strange Situation measures how a child:

Basically, the Strange Situation measures how a child:

On average, children begin saying recognizable words at about:

During the sensorimotor stage, the main task is to:

Margarita and Roberto are warm, nurturing parents who held their baby all of the time and cradled him.  They are exhibiting:

When Caitlin falls and hurts herself, she runs to her mother crying.  Rather than comforting Caitlin, her mother offers her a toy to distract her.  Her mother is a(n):