Newborn preference for a new face vs. a previously seen communicative or motionless face

► Newborns prefer to look at a new face compared to a known still-face: novelty effect. ► Novelty effect does not happen with the mother-face. ► Newborns previously exposed to a communicative face not showed novelty effect. ► Newborns (15-50 h of life) seem able to build a dynamic representation of faces.