This note highlights a subtle aspect of the asymmetric costs literature not covered in the comprehensive review by Banker and Byzalov (2014). Specifically, we test the assertion underlying this literature that reported expenses can serve as an appropriate proxy for estimating the asymmetry of economic costs. Our findings refute this assertion, indicating that reporting choices influence the estimated asymmetry level of reported expenses. As a result, reported expenses are significantly more asymmetric (sticky) than economic costs. This evidence suggests that reporting choices required by GAAP matter in estimating cost stickiness. These findings enrich Banker and Byzalov (2014) by suggesting that future asymmetric costs research should (1) look for alternative accounting variables with the potential to capture economic costs, and (2) explore how various types of reporting choices affect asymmetric cost behavior.
Prior literature suggests that research and development (R&D) activity is associated with volatile earnings and that, in general, managers perceive earnings volatility as unfavorable and seek to avoid it. Accordingly, I hypothesize and find that the extent to which firms engage in R&D (R&D intensity) is positively associated with the extent to which they engage in accrual-based earnings management, as measured by discretionary accruals. I also find that greater R&D intensity is associated with a smaller positive effect of discretionary accruals on earnings volatility, suggesting that R&D intensity and discretionary accruals constitute non-additive sources of information uncertainty. This study provides empirical evidence of the prevalence of earnings management practices in R&D-intensive industries, supporting conjectures of regulators, practitioners, and academics.Keywords research and development (R&D), discretionary accruals, earnings management
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