Placebo Tests of Conditional Conservatism

ABSTRACT

Basu (1997) proposes a measure of financial reporting conservatism based on asymmetry in the conditional earnings/returns relation. Patatoukas and Thomas (2011) show upward bias in this measure, because a placebo—lagged earnings—also exhibits similar asymmetry. Ball, Kothari, and Nikolaev (2013a) and Collins, Hribar, and Tian (2014) propose alternative explanations for the bias and offer revised measures to overcome the bias. However, we find that both ...more