Early Organization of Simultaneous Multimodal Behaviors: Perception- and Production-Based Contingencies as a Scaffold for Language Development.
AIM This study investigated how infants' simultaneous multimodal behaviors (SMBs)-the concurrent coordination of vocal, gaze, facial, and manual signals-are organized during natural caregiver-infant interactions at 3 and 6 months. Within a contingency-based framework, we examined how perception-based and production-bas...