Changes in children's spacing behaviour with nursery school experience.
D002675:Child, Preschool; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D008425:Maternal Behavior; D009034:Mother-Child Relations; D010379:Peer Group; D012578:Schools, Nursery; D012737:Sex Factors; D012801:Sibling Relations; D012917:Social Adjustment; D012919:Social Behavior; D013037:Spatial Behavior