Gompers versus Bebchuck Governance Measure and Firm Value

This study compares the two primary measures of corporate governance quality, [1], GIM index and [2] E index using tests for comparing two nonnested models. We find that the GIM index has statistically significantly more power than the E index in explaining the variability in firm value, as measured by Tobin’s Q. This finding suggests that the IRRC provisions excluded from the E index may have a statistically significant incremental power in...