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Abstract We explore the influence of individual audit partner style on financial statement comparability in a US setting using newly available data. We find evidence of an audit partner style effect on comparability incremental to audit firm and audit office effects. Our results are consistent across several comparability measures and are economically significant. For example, the audit partner effect is associated with a 12.59% decrease in the mean difference in abnormal accruals compared with a 4.4% decrease for firm pairs audited by the same Big 4 audit office. We also find that audit partner expertise and experience have a greater influence on comparability than audit office expertise and experience. Our results are consistent in endogeneity and robustness tests including (1) auditor switching tests, (2) entropy balancing, (3) placebo tests and (4) controlling for clients’ economic similarity. Our results suggest that the association between audit partner style and financial statement comparability persists in highly regulatory environments and corroborate the PCAOB's intuition that the role of the engagement partner “is of singular importance” to the outcome of the audit (PCAOB 2011).
Frost et al. (Thu,) studied this question.