This paper re-evaluates evidence in Ayers and Freeman [Ayers, F., Freeman, R., 1997. Market assessment of industry and firm earnings information. Journal of Accounting and Economics 24, 205–218] suggesting that investors anticipate industry-wide components of earnings earlier than firm-specific components, and that post-earnings-announcement drift following annual earnings announcements is due primarily to firm-specific components of earnings. Our tests indicate that post-announcement drift is entirely attributable to coefficient bias due to measurement errors in the use of realized earnings changes as proxies for unexpected earnings. Also, coefficient differences in the market's anticipation of subsequent-year industry and firm-specific earnings become insignificant when we introduce suitable controls for non-linearity in the return/earnings relation.

This paper reassesses evidence of anticipatory income smoothing reported in DeFond and Park (DP) (J. Accounting Econom. 23 (1997) 115) in light of knowledge about measurement error in discretionary accrual estimates. We argue that the method DP use to measure un-managed earnings mechanically biases the evidence in a manner consistent with anticipatory income smoothing. Using an approximate randomization approach, we find that DP's results cannot be distinguished from those achieved when discretionary accruals are randomly assigned to firm-years in our sample. Overall, these results show that the ‘backing out’ approach to measuring un-managed earnings is ineffective in testing earnings management hypotheses.