title: The differential heritability of personality item clusters.
abstract: An earlier twin analysis by Loehlin and Nichols was repeated with a considerably larger twin sample (2,600 adult Australian twin pairs). Like the previous analysis, it was based on item clusters, although from different questionnaires. Unlike the previous study, it found consistent differences in MZ-DZ discrepancy in correlation among the clusters. A more elaborate analysis confirmed this for the clusters, but not for broad Extraversion and Neuroticism composites based upon them.
authors: Department of Psychology, The University of Texas at Austin, 1 University Station, Austin, TX 78712-0187, USA. loehlin@psy.utexas.edu
authors: John C
authors: JC
authors: Loehlin
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology; D001315:Australia; D016000:Cluster Analysis; D003627:Data Interpretation, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010551:Personality / Q000235:genetics*; D012727:Sex Characteristics; D011795:Surveys and Questionnaires; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic; D055815:Young Adult