title: Obsessional personality traits and ABO blood types.
abstract: The relation of ABO blood types to obsessional personality traits, as measured by the Leyton Obsessional Inventory (LOI), was studied in a sample of 600 normal individuals. High scorers of the LOI trait portion demonstrated a significantly lower incidence of phenotype O and a significantly higher incidence of phenotypes AB, A and B, taken together, compared to those of a general population sample and the entire study group. Findings of the present study, in conjunction with previous findings concerning a lower incidence of phenotype O and a higher incidence of phenotype A in obsessive compulsive patients, could be interpreted as indicating that phenotype O may be associated with personality traits hindering the development of obsessive-compulsive symptomatology.
mesh_terms: D000017:ABO Blood-Group System; D000293:Adolescent; D000328:Adult; D000368:Aged; D003192:Compulsive Behavior; D005260:Female; D006115:Greece; D006801:Humans; D008297:Male; D008875:Middle Aged; D009770:Obsessive Behavior; D010551:Personality; D010641:Phenotype
chemical_list: D000017:ABO Blood-Group System