In the article "Biological Determination Of Sexuality Heating Up As A Research Field" (R. Finn, The Scientist, Jan. 8, 1996, page 13), incorrect information was given regarding the first finding of a neuroanatomic difference between homosexual and heterosexual men. This finding was first demonstrated by D.F. Swaab and M.A. Hofman of the Netherlands Institute for Brain Research (D.F. Swaab, M.A. Hofman, "An enlarged suprachiasmatic nucleus in homosexual men," Brain Research, 537:141-8, 1990).