“凭感觉”的热情与能力：社会认知内容的生理线索

热情与能力是解析社会认知的普适性框架,同现实情境中诸多要素存在着关联。与众多明显带有社会属性的要素相比,源自面孔或者颜色的视觉、声音的听觉、身体姿态的动觉、温度变化的肤觉等生理线索,也可以跟热情与能力的社会知觉产生关联,这个过程可能基于生理–社会的知觉联结假设或者知觉启动假设而发生。以生理–社会的知觉关系为切入点,热情与能力更能发挥解析具体情境的灵活性。侧重典型生理线索的挖掘、建立生理线索同热情与能力的组态关系,以及这种关系对社会性偏向的影响,将有助于推进热情与能力融入更为广泛的社会应用之中。     

Learning how to learn from social feedback: The origins of early vocal development

Infants’ prelinguistic vocalizations reliably organize vocal turn-taking with social partners, creating opportunities for learning to produce the sound patterns of the ambient language. This social feedback loop supporting early vocal learning is well-documented, but its developmental origins have yet to be addressed. When do infants learn that their non-cry vocalizations influence others? To test developmental changes in infant vocal learning, we assessed the vocalizations of 2- and 5-month-old infants in a still-face interaction with an unfamiliar adult. During the still-face, infants who have learned the social efficacy of vocalizing increase their babbling rate. In addition, to assess the expectations for social responsiveness that infants build from their everyday experience, we recorded caregiver responsiveness to their infants’ vocalizations during unstructured play. During the still-face, only 5-month-old infants showed an increase in vocalizing (a vocal extinction burst) indicating that they had learned to expect adult responses to their vocalizations. Caregiver responsiveness predicted the magnitude of the vocal extinction burst for 5-month-olds. Because 5-month-olds show a vocal extinction burst with unfamiliar adults, they must have generalized the social efficacy of their vocalizations beyond their familiar caregiver. Caregiver responsiveness to infant vocalizations during unstructured play was similar for 2- and 5-month-olds. Infants thus learn the social efficacy of their vocalizations between 2 and 5 months of age. During this time, infants build associations between their own non-cry sounds and the reactions of adults, which allows learning of the instrumental value of vocalizing.