Distinguishes objects by configuration and shape after 12-15 months99
Place round object in round hole24
Enjoys picture books26, 27
Stacks and puts together two objects appropriately33
Inserts 2 shapes into the correct wholes on a formboard9
Pays attention to distant objects41
Object permanence of totally covered object34
Increasing power and control in arches of hands; enjoys placing pegs and round objects in round holes
Object permanence is understood even when toys are completely covered
Stacks and puts together two objects appropriately