Simplify the following text for a Grade 12 native English-speaking person.
Original: He studied and finally earned a doctorate in economics and political sciences from Eberhard Karls University of TÃ 1\/4 bingen , where he was a scientific research assistant at the Institute for Applied Economic Research from 1969 to 1976 .
Simplified: He studied and finally earned a doctorate in economics and political sciences from Eberhard Karls University of TÃ 1\/4 bingen . There , he was a scientific research assistant at the Institute for Applied Economic Research from 1969 to 1976 .