title: An assessment of monozygotic twin relationships by the semantic differential.
mesh_terms: D005260:Female; D006801:Humans; D007062:Identification, Psychological; D008297:Male; D008433:Mathematics; D008722:Methods; D008824:Michigan; D010552:Personality Assessment; D011247:Pregnancy; D012649:Self Concept; D012659:Semantic Differential; D011795:Surveys and Questionnaires; D014427:Twins