title: Twins with academic learning problems: antecedent characteristics.
abstract: Developmental histories of 46 children experiencing academic difficulties, all of whom had participated since birth in a longitudinal study of twins, were compared with a matched control group of twins. Genetic influences on the liability for academic difficulties are suggested, since identical pairs were more likely than fraternal pairs to be concordant both for academic difficulties and for preschool behavioral characteristics specific to the index group.
mesh_terms: D000124:Achievement; D001288:Attention; D002652:Child Behavior; D002675:Child, Preschool; D004644:Emotions; D005247:Feeding Behavior; D005260:Female; D006128:Growth; D006801:Humans; D007360:Intelligence; D007361:Intelligence Tests; D007859:Learning Disabilities / Q000235:genetics*; D008137:Longitudinal Studies; D008297:Male; D009043:Motor Activity; D009048:Motor Skills; D011247:Pregnancy; D011581:Psychological Tests; D012306:Risk; D012893:Sleep Wake Disorders / Q000150:complications; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic