title: The intellectual achievement of only children.
authors.forename: D F
authors.initials: DF
authors.lastname: Polit
authors.forename: T
authors.initials: T
authors.lastname: Falbo
mesh_terms: D000124:Achievement; D000293:Adolescent; D000328:Adult; D001722:Birth Order; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007360:Intelligence; D008297:Male; D009863:Only Child; D010287:Parent-Child Relations