Health Science - Human Development Hour - demo By Health Science Harmon Jul 23, 1978 Born - in Urbana IL 8 lb 5 oz Jul 31, 1978 1 week - may lose some weight Aug 4, 1978 1 mo - gains 1.5 oz each day Aug 4, 1978 1 mo - getting used to being in the world Nov 4, 1978 physical - rolls over front to back 4 mo Nov 4, 1978 social - smiles 4 mo Nov 4, 1978 cognitive - reacts to voice and sounds - 4 mo