title: Basic issues in the analysis of human differences.
mesh_terms: D000328:Adult; D002648:Child; D003241:Consanguinity; D005190:Family; D005260:Female; D014644:Genetic Variation; D005826:Genetics, Medical; D006801:Humans; D008297:Male; D008722:Methods; D008957:Models, Genetic; D009497:Neurotic Disorders / Q000235:genetics; D011247:Pregnancy; D012737:Sex Factors; D014427:Twins