1. Social elicitation of infant vocal behavior;Bloom;Journal of Experimental Child Psychology,1975
2. Social conditioning and its proper control procedures;Bloom;Journal of Experimental Child Psychology,1975
3. The origins of reciprocity: the early mother-infant interaction;Brazelton,1974
4. Origins of intelligence;Piaget,1952
5. Mother and infant at play: The dyadic interaction involving facial, vocal, and gaze behaviors;Stern,1974