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The Accounting Review Vol. 92 No. 2 2017

Idiosyncratic Shocks to Firm Underlying Economics and Abnormal Accruals

Edward Owens1; Joanna S. Wu2; Jerold L. Zimmerman

1 Emory University · 2 University of Rochester

Abstract

Economics challenge the specification of discretionary accrual models. Since rent-seeking firms pursue differentiated business strategies, firms in the same industry experience idiosyncratic shocks due to heterogeneous economic fundamentals and hence have different accrual-generating processes. We present evidence that idiosyncratic shocks are widespread, propagate through multiple years of financial statements, and reduce accrual models' goodness of fit. This not only affects abnormal accrual estimates for the firm experiencing shocks, but also affects measurement of abnormal accruals for other firms in the industry. We show that idiosyncratic shocks not only add noise to abnormal accruals, but can also exacerbate bias in both unsigned and signed abnormal accruals. We propose ways to reduce accrual model misspecification.

DOI
10.2308/accr-51523
Volume
92
Issue
2
Pages
183-219
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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