Ongoing empirical research on the drivers of project-aid effectiveness relies on World Bank evaluation ratings across heterogeneous aid sectors. This leads to two problems. First, it is difficult to identify which dimension of project performance World Bank evaluation ratings are measuring...

We introduce a new "supply-push" instrument for foreign aid, to be used together with an instrumental variable estimator that filters out unobserved common factors. We use this instrument to study the effects of aid on macroeconomic ratios, and especially the ratios of consumption, investment,...

For years, German development cooperation (GDC) has been striving to become more results-oriented. In 2022, the Federal Ministry for Economic Cooperation and Development (BMZ) took an important step in this direction by introducing 43 standard indicators. The aim was to aggregate development...