Martin scale Martin scale The Martin scale is an older version of color scale commonly used in physical anthropology to establish more or less precisely the eye color of an individual; it was created by the anthropologist Martin in the first half of the 20th century. Later he improved this scale with cooperation of Dr. Schulz – the Martin-Schultz scale. The original Martin scale, summarized below, consists of 16 colors (from light blue to dark brown-black) that correspond to the different eye colors observed in nature due to the amount of melanin in the iris. The numbering is reversed in order to
American Journal of Physical Anthropology of biology and medicine, along with the "American Journal of Botany", "British Medical Journal", "Journal of Paleontology", "Journal of the American Medical Association", "Journal of Zoology", "Nature", "New England Journal of Medicine", "Proceedings of the National Academy of Sciences", and "Science". According to the Journal Citation Reports, its 2011 impact factor is 2.824, ranking it 6th out of 79 in the category "Anthropology" and 23rd out of 45 in the category "Evolutionary Biology". Additionally, the journal has earned the most citations in the category "Anthropology" each year for over a decade. The Yearbook of Physical Anthropology is an annual peer-reviewed