Gu and Xue [2008. The superiority and disciplining role of independent analysts. Journal of Accounting and Economics, this issue, doi:10.1016/j.jacceco.2008.02.002] study the disciplining effect of independent analysts on the accuracy and forecast relevance of the forecasts of non-independent analysts. One of the intriguing results is that while independent analysts issue inferior forecasts, their presence appears to reduce the forecast bias, improve the forecast accuracy and increase the forecast relevance of forecasts issued by non-independent analysts. We explore alternative explanations for the Gu–Xue results. Our evidence of endogenous entry and exit of independent analysts provides a more compelling explanation for the reported results.

We document that accrual-based earnings management increased steadily from 1987 until the passage of the Sarbanes-Oxley Act (SOX) in 2002, followed by a significant decline after the passage of SOX. Conversely, the level of real earnings management activities declined prior to SOX and increased significantly after the passage of SOX, suggesting that firms switched from accrual-based to real earnings management methods after the passage of SOX. We also document that the accrual-based earnings management activities were particularly high in the period immediately preceding SOX. Consistent with these results, we find that firms that just achieved important earnings benchmarks used less accruals and more real earnings management after SOX when compared to similar firms before SOX. In addition, our analysis provides evidence that the increases in accrual-based earnings management in the period preceding SOX were concurrent with increases in equity-based compensation. Our results suggest that stock-option components provide a differential set of incentives with regard to accrual-based earnings management. We document that while new options granted during the current period are negatively associated with income-increasing accrual-based earnings management, unexercised options are positively associated with income-increasing accrual-based earnings management.