Overview
Since the 1990s, Japan has experienced stagnant R&D investment and a persistent slowdown in productivity growth, raising concerns about a decline not only in the quantity but also in the quality of innovation. This project constructs a large-scale dataset linking the IIP Patent Database to Japanese firm databases, and empirically examines how firm characteristics—CEO attributes, the depth of the organizational hierarchy, and the structure of buyer-supplier networks—predict whether firms generate radical or incremental innovation. The empirical findings are then incorporated into a quantitative macroeconomic growth model that decomposes Japan's growth rate into the contributions of the two types of innovation. The calibrated model is used to evaluate counterfactual policies—R&D tax credit policy reform, managerial reform, and flattening organizational hierarchies—for the purpose of identifying which policy levers should be prioritized in revitalizing Japan's innovative capacity.
October 13, 2026 - March 31, 2029
（During the research project period, the research activity period is set from October 13, 2026, to September 30, 2028, and the data usage reporting period is set from October 1, 2028 to March 31, 2029.）
