[Laughing and crying of children as a sociopsychic instinct phenomenon. A contribution based on psychological research].
D002657:Child Development; D004644:Emotions; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007323:Instinct; D007845:Laughter; D008297:Male; D012932:Social Facilitation; D012951:Socialization
Lächeln und Weinen des Säuglings als soziopsychische Instinktphänomene. Ein Beitrag zur psychologischen Grundlagenforschung.