Color blindness all variations in human color vision involve the red and green receptors in male eyes. It is very rare for males or females to be "blind" to the blue end of the spectrum. The first scientific paper on the subject of color blindness, "Extraordinary facts relating to the vision of colours", was published by the English chemist John Dalton in 1798 after the realization of his own color blindness. Because of Dalton's work, the general condition has been called "daltonism", although in English this term is now used only for deuteranopia. Color codes present particular problems for those with color
Association for the Social Scientific Study of Jewry Association for the Social Scientific Study of Jewry The Association for the Social Scientific Study of Jewry (ASSJ) is a cross-disciplinary organization of individuals whose research concerns the Jewish people throughout the world. The ASSJ comprises primarily academics, but also policy analysts, communal professionals, and activists whose research concerns the Jewish people throughout the world. Social scientific disciplines represented include sociology, social psychology, social anthropology, demography, contemporary history, social work, political science, economics, and Jewish education. Members work throughout the world but primarily in North America, Israel, and Europe. The ASSJ encourages and facilitates contact among researchers, supports the dissemination