ABSTRACT: This study experimentally investigates the effectiveness of computer-mediated brainstorming in the context of the SAS No. 99 mandated fraud brainstorming requirement. Results indicate that brainstorming effectiveness is significantly higher for teams brainstorming electronically relative to teams using traditional face-to-face brainstorming. There is no significant difference in brainstorming effectiveness between electronic interactive brainstorming and electronic nominal brainstorming. Brainstorming effectiveness is significantly higher for teams receiving content facilitation relative to teams not receiving content facilitation. The post-brainstorming fraud risk assessments are significantly higher than the pre-brainstorming assessments in all treatment conditions, indicating that the SAS No. 99 mandated brainstorming session has the intended effect. This research informs audit practice by demonstrating that computer-mediated fraud brainstorming can be more effective than face-to-face brainstorming and also by establishing the effectiveness of content facilitation for improving the quality of the fraud risk factors generated by auditors.

ABSTRACT We examine the effects of a large number of clients in an audit office using the same enterprise-resource planning (ERP) system such as SAP or Oracle resulting in what we term “client accounting system homogeneity” on audit efficiency and effectiveness. Using a unique dataset of ERP system implementations, we find that accounting system homogeneity is positively associated with audit efficiency. Specifically, we find lower (higher) audit fees for clients using an ERP system from a vendor used by a higher (lower) proportion of clients in that office. We further document that accounting system homogeneity is associated with improved audit effectiveness as proxied by two accruals-based measures, incorrect internal control weakness reporting, and restatements. Our findings are reflective of a new form of knowledge spillover from repeated experiences auditing clients using similar accounting systems, resulting in audits that are not only less expensive but also of higher quality. Data Availability: Contact the authors.