How human capital, universities of excellence, third party funding, mobility and gender explain productivity in German political science

Using a unique panel dataset of virtually all German academic political scientists, we show that researchers become much more productive due to the accumulation of human capital and third party funding. We also show however, that while universities of excellence have more productive researchers, individuals who go there do not become more productive. Finally, we show how women publish only 9 percent less than men with the same level of prior publication experience, but are about 26 percent less productive over their entire career, as early productivity leads to later productivity, so that women increasingly fall behind. These results cannot be explained through the influence of childbearing. Rather, they support the ‘theory of limited differences’, which argues that small differences in early productivity accumulate to large differences over entire careers, as early success encourages later success. Apart from generally showing why political scientists publish more or less, we specifically identify accumulative advantage as the principal reason why women increasingly fall behind men over the course of their careers.