Research on Auditor Professional Skepticism: Literature Synthesis and Opportunities for Future Research

Abstract

SUMMARY Both researchers (e.g., Nelson 2009) and regulators (e.g., the PCAOB) have emphasized the importance of exercising the appropriate level of professional skepticism when conducting an audit. However, professional skepticism remains a hard concept to define and measure. In addition, it is often difficult to determine if a lack of skepticism is the primary cause of audit deficiencies and if so, what factors led to the lack of skepticism. The purpose of this paper is threefold: (1) extend the work of Nelson (2009) by synthesizing research related to auditors' professional skepticism to identify antecedents to both skeptical judgment and skeptical action, (2) identify areas where research is lacking on a particular dimension and suggest avenues for future research, and (3) discuss the implications of research findings for regulators and auditing professionals. We adopt two foundational aspects of the framework introduced in the seminal paper by Nelson (2009), which proposes that lack of skepticism can either be the result of a failure in problem recognition (lack of skeptical judgment) or a failure to act on a problem recognized (lack of skeptical action). We organize research studies into four categories of antecedents: studies relating to auditor characteristics, evidence characteristics, client characteristics, and environmental characteristics. We find that while research studies provide insights into both the antecedents to skeptical judgments and actions, the majority of research efforts to date have focused on the antecedents to skeptical judgments and on auditor characteristics in particular. Research findings have implications for practice, but in order to understand how skeptical judgment translates into skeptical action, additional research on skeptical action will need to be conducted.

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