title: Sibling rivalry as an important factor in academic under-achievement: a cross-cultural contribution.
authors.forename: S T
authors.initials: ST
authors.lastname: Ilechukwu
mesh_terms: D000293:Adolescent; D000328:Adult; D001722:Birth Order; D003163:Competitive Behavior; D003466:Cultural Characteristics; D003469:Culture; D005260:Female; D006801:Humans; D007578:Jealousy; D008297:Male; D009549:Nigeria; D012801:Sibling Relations; D014477:Underachievement