national system of innovation, however, implicitly assumes poolability of regional data. We apply our reasoning to Germany … further research in the field, that is, a careful evaluation of poolability and aggregation is required before estimating …

national system of innovation, however, implicitly assumes poolability of regional data. We apply our reasoning to Germany … further research in the field, that is, a careful evaluation of poolability and aggregation is required before estimating …

, assumes poolability of regional data. We apply our reasoning to Germany, which has well‐known regional disparities, in … aggregation levels. Overall, our findings suggest that a careful evaluation of poolability and aggregation is required before …