It took three years to replicate the economic paper “Growth in a Time of Debt” by Carmen Reinhart and Kenneth Rogoff. In these three years, the paper and its errors were cited widely in the field and heavily relied on by politicians. Why has no one found out earlier? Because the data were not online. Such delay in cross-checking work can be prevented. By using the natural sciences as a model, journals in political science and economics can adopt a better replication policy. The key point: journals should require authors to provide their data set when submitting a manuscript.
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