a 16-week old child which is expected

Milestones of development at 16 weeks * Social: Laughs out loud; may show displeasure if social contact is broken; excited at sight of food. * Prone: Lifts head and chest, head in approximately veical axis; legs extended. * Supine: Symmetric posture predominates, hands in midline; reaches and grasps objects and brings them to mouth. * Standing: When held erect, pushes with feet. * Sitting: No head lag on pull to sitting position; head steady tipped forward; enjoys sitting with full truncal suppo. * Adaptive: Sees pellet, but makes no move to it.