title: Path analysis of aptitude, personality, and achievement scores in Brazilian twins.
abstract: Achievement at school and performance on the Dominoes test, the Differential Aptitude Tests (DAT), and Griéger's Characterological Questionnaire of 45 monozygotic and 46 same-sex dizygotic pairs of twins were analyzed using a new linear model for familial corrrelation. For 14 of the 20 sets of data, the genotype's contribution to the total variance is estimated to be higher than 50%. The effect of common environment seems to be important only for achievement in Arts.
mesh_terms: D000124:Achievement; D001076:Aptitude; D001938:Brazil; D004777:Environment; D005260:Female; D005838:Genotype; D006801:Humans; D008297:Male; D008954:Models, Biological; D010551:Personality; D011247:Pregnancy; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic