sentences:  Laughlin's choice of the So was influenced by conversations he had with Colin Turnbull, who had worked with nearby peoples.Laughlin completed his dissertation, "Economics and Social Organization among the So of Northeastern Uganda", and received his Ph.D. in 1972 while he was assistant professor of anthropology at the State University of New York at Oswego.He continued his studies during a postdoctoral fellowship at the Institute of Neurological Sciences at the University of Pennsylvania.