A possible genetic contribution to the alexithymia trait.
Alexithymic characteristics were studied in 15 monozygotic and 18 like-sex dizygotic healthy young twin pairs in a semistructured interview. Variance analysis showed larger within-pair variances in the dizygotic than in the monozygotic twins. With some reservations, these results point to a genetic influence on the etiology of the alexithymic phenomenon.
D000704:Analysis of Variance; D004644:Emotions; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic; D014705:Verbal Behavior