Effects of Decomposition and Categorization on Fraud-Risk Assessments

Abstract

SUMMARY This study examines two issues related to the decomposition of fraud-risk assessments. First, it investigates whether there is a significant difference in the fraud-risk assessment of auditors who decompose the fraud judgment from that of auditors who merely categorize fraud-risk factors. Second, it examines whether the perceived need to modify the audit plan and the extent of testing in response to the fraud-risk assessment is significantly influenced by the decomposition of the fraud judgment. In an experiment with 60 audit managers, auditors who decomposed fraud-risk judgments have significantly different fraud-risk assessments than those of auditors who simply categorized fraud cues. When management's attitude cues are indicative of a low fraud risk, decomposition auditors are significantly more sensitive to changes in incentive and opportunity cues than categorization auditors. Finally, auditors who decompose fraud-risk assessments perceive a significantly higher need to revise audit plans and to increase the extent of audit testing.

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