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Abstract：
Laughter is a nonverbal vocal expression that often communicates positive affect and cooperative intent in humans. Temporally coincident laughter occurring within groups is a potentially rich cue of affiliation to overhearers. We examined listeners\' judgments of affiliation based on brief, decontextualized instances of colaughter between either established friends or recently acquainted strangers. In a sample of 966 participants from 24 societies, people reliably distinguished friends from strangers with an accuracy of 53-67%. Acoustic analyses of the individual laughter segments revealed that, across cultures, listeners\' judgments were consistently predicted by voicing dynamics, suggesting perceptual sensitivity to emotionally triggered spontaneous production. Colaughter affords rapid and accurate appraisals of affiliation that transcend cultural and linguistic boundaries, and may constitute a universal means of signaling cooperative relationships.
摘要：
笑声是一种非语言的声音表达，通常在人类中传达积极的情感和合作意图。群体内部发生的暂时重合的笑声可能是对过度听众的隶属关系的丰富线索。我们检查了听众对隶属关系的判断，基于简短，在已建立的朋友或最近认识的陌生人之间进行解文化的合作实例。在来自24个社团的966名参与者的样本中，人们可靠地将朋友与陌生人区分开来，准确率为53-67%。对各个笑声片段的声学分析表明，跨文化,听众的判断是通过发声动态来预测的，暗示对情绪触发的自发生产的感知敏感性。Collaugh可以快速准确地评估超越文化和语言界限的隶属关系，并可能构成信号传递合作关系的普遍手段。
