In 1969 , he received his Ph. D. in Anthropology from Pennsylvania State University .
In 1969 , he subsequently became a Research Scientist at the University of Michigan Center for Human Growth and Development and Assistant Professor of Anthropology at the Department of Anthropology .
In 1969 , he received his Ph. D. in Anthropology from Pennsylvania State University and subsequently became a Research Scientist at the University of Michigan Center for Human Growth and Development and Assistant Professor of Anthropology at the Department of Anthropology .