The American Journal of Physical Anthropology (AJPA) is the official journal of the American Association of Biological Anthropologists (AABA). The Journal is published monthly in three quarterly volumes, of four issues each. In addition, two supplements appear on an annual basis, the Yearbook of Physical Anthropology, which publishes major review articles, and the Annual Meeting Issue, containing the Scientific Program of the Annual Meeting of the American Association of Biological Anthropologists and abstracts of posters and podium presentations. The Yearbook of Physical Anthropology has its own editor, appointed by the Association, and is handled independently of the AJPA. As measured by impact factor, the AJPA is among the top journals listed in the anthropology category by the Social Science Citation Index. The reputation of the AJPA as the leading publication in biological anthropology is built on its century-long record of publishing high quality scientific articles in a wide range of topics.