外部审计师评价内部审计工作研究评述

注册会计师审计与内部审计同是审计体系的重要组成部分.长期以来,职业界在内部审计与外部审计相互利用工作结果的可能性方面已取得共识.本文就国外外部审计师依赖并利用内部审计工作的有关实证研究进行综述,并对未来研究方向提出建议.     

Inherent risk: An investigation of auditors' judgments

The assessment of inherent risk is a judgment required of auditors by Statement on Auditing Standards 47 (Auditing Standards Board, AICPA, New York, 1983) that normatively affects the scope of work performed on audit engagements. This study explores the judgments of auditors concerning inherent risk in inventory. Four inherent risk factors were examined: turnover of the controller, financing pressure, the amount of complexity of overhead in inventory, and the quality of the personnel responsible for the inventory calculation. A human information processing approach employing ANOVA was utilized to determine the relative reliance on these factors in the inherent risk judgments of 65 practicing auditors. Correlation techniques were used to measure consensus, reliability, and self-insight.The results suggest that although all four inherent risk factors were important to auditors, quality of personnel was the most significant. Reliability was slightly lower than in previous research, but was still fairly high. Self-insight was moderate.     

Policy-induced internal migration: An empirical investigation of the Canadian case

We investigate the influence of public policy on interprovincial migration in Canada using new aggregated migration data for 1974–1996, the longest period studied so far. We consider the consequences of regional variation in a variety of policies, and also investigate the effects of certain extraordinary events in Quebec and in the Atlantic provinces. The results indicate that while the changing bias in the unemployment insurance system may have induced some people to move to the relatively high unemployment Atlantic region, the resulting flows are likely too small to have altered regional unemployment rates. In contrast, political events in Quebec in the 1970's and the closing of the cod fishery in 1992 appear to be associated with large changes in migration patterns. JEL Classification H0 · H7 · J41 · J65 · R23 · R58     

An international study of internal audit function quality

We investigate organisational and environmental factors that influence firms’ incentives to develop high-quality internal audit functions (IAFs) by using a unique international sample formed by matching proprietary data from a global internal auditor survey with public data obtained from Worldscope. Concerning organisational factors, we find that a positive relationship exists between IAF quality and firm complexity and confirm that complex firms have a higher demand for monitoring and advising and, therefore, a greater need for formal controls. In addition, IAF quality is positively related to board monitoring and audit committee diligence but negatively associated with CEO power, which suggests that IAF quality is influenced by other key players in corporate governance. Regarding environmental factors, we document that IAF quality is positively associated with industry competition, which implies that a firm’s incentive for a high-quality IAF is enhanced when confronted with greater environmental uncertainty. Furthermore, IAF quality has a significantly positive relationship with our self-constructed index of IAF requirements included in national corporate governance codes, which indicates that strong home-country corporate governance codes play a role in fostering IAF development.     

The relationship between internal audit and information security: An exploratory investigation

The internal audit and information security functions should work together synergistically: the information security staff designs, implements, and operates various procedures and technologies to protect the organization's information resources, and internal audit provides periodic feedback concerning effectiveness of those activities along with suggestions for improvement. Anecdotal reports in the professional literature, however, suggest that the two functions do not always have a harmonious relationship. This paper presents the first stage of a research program designed to investigate the nature of the relationship between the information security and internal audit functions. It reports the results of a series of semi-structured interviews with both internal auditors and information systems professionals. We develop an exploratory model of the factors that influence the nature of the relationship between the internal audit and information security functions, describe the potential benefits organizations can derive from that relationship, and present propositions to guide future research.     

An empirical investigation of the impact of audit and auditor characteristics on auditor performance

We use a unique and confidential database of 15,392 tax audits performed by the Croatian Tax Administration during the 2002–2006 period to examine the impact of task complexity, auditor experience, and auditor effort on audit performance. We provide external validation to prior experimental and analytical research showing that task complexity decreases while auditor experience and effort increase audit performance. We also extend this literature by examining the roles of task complexity and experience in moderating the impact of the effort on audit performance. We find that task complexity mitigates, while experience enhances the positive relationship between auditor effort and performance. However, we also find that auditor experience reinforces the positive effect of auditor effort on performance to a greater degree when complexity is high. Taken together, our findings provide new evidence on how audit and auditor characteristics impact audit performance, and new insight into how task complexity and auditor experience separately and jointly moderate the impact of auditor effort on performance.     

External auditors' willingness to rely on the work of internal auditors: The influence of work style and barriers to cooperation

The extent to which external auditors rely on the work of internal auditors is an important judgment. Recently, the Public Company Accounting Oversight Board has recommended that external auditors “rely (more) on the work of others” to reduce the greater-than-expected costs associated with compliance with Section 404 of the Sarbanes–Oxley Act. Reliance decisions, however, are complex decision tasks that require professional judgment and may be influenced by a number of factors, both external (environmental) and internal (cognitive and affective), including the auditors' working style and pervious experiences related to barriers to external/internal auditor cooperation (e.g., previously experienced low versus high internal auditor objectivity and/or competence). We experimentally examine these influences in our research reported herein. Consistent with expectations, external auditors' work styles significantly influenced the extent of planned audit testing, internal auditor reliance judgments, and interpretation of analytical procedures results. Auditors' perceptions about internal auditors' competence and objectivity, developed over years of interaction, also influenced these judgments, and interacted with work styles. Inconsistent with expectations, auditor rank (senior versus manager) did not influence judgments.     

Sourcing of internal auditing: An empirical study

This paper studies the factors associated with organizations’ internal audit sourcing decisions, building from a previous study by Widener and Selto (henceforth W&S) [Widener, S.K., Selto, F.H., 1999. Management control systems and boundaries of the firm: why do firms outsource internal audit activities? J. Manage. Account. Res. 11, 45–73]. In their study, W&S used Transaction Cost Economics (TCE) to explain the governance of internal auditing. Our study seeks to replicate their results, using newly collected data from 66 companies headquartered in the Netherlands. Our findings are supportive of W&S. Like W&S, we find asset specificity and frequency (both individually and in interaction) to be significantly associated with sourcing decisions. These findings are robust against different model specifications, and they hold across variously defined samples. We conclude that the W&S results are reproducible in different conditions, enhancing the credibility of the TCE-based explanation of organizations’ internal audit sourcing practices.     

External auditors' perceptions of cloud computing adoption in Australia

Adopting a multi-theoretical approach, I examine external auditors' perceptions of the reasons why organizations do or do not adopt cloud computing. I interview forensic accountants and IT experts about the adoption, acceptance, institutional motives, and risks of cloud computing. Although the medium to large accounting firms where the external auditors worked almost exclusively used private clouds, both private and public cloud services were gaining a foothold among many of their clients. Despite the advantages of cloud computing, data confidentiality and the involvement of foreign jurisdictions remain a concern, particularly if the data are moved outside Australia. Additionally, some organizations seem to understand neither the technology itself nor their own requirements, which may lead to poorly negotiated contracts and service agreements. To minimize the risks associated with cloud computing, many organizations turn to hybrid solutions or private clouds that include national or dedicated data centers. To the best of my knowledge, this is the first empirical study that reports on cloud computing adoption from the perspectives of external auditors.     

An empirical test of spatial competition in the audit market

This study empirically examines the effects of competition through differentiation on audit pricing. Based on prior economic theory on differentiated-product markets (e.g., Hotelling, 1929, Tirole, 1988), we hypothesize that audit fees are affected by an auditor's relative location in a market segment. We define audit markets per industry segment and U.S. Metropolitan Statistical Area and specify an auditor's industry location relative to the client (auditor–client industry alignment) and relative to the closest competitor (industry market share distance to closest competitor). We find that audit fees increase in both auditor–client industry alignment and industry market share distance to the closest competitor.     

An empirical study of audit expectation-performance gap: The case of Libya

The purpose of this research is to empirically examine the causes of the audit expectation gap in Libya. The study builds on the frameworks developed by Porter (1993) and Porter & Gowthorpe (2004) to investigate the influence of the audit expectation gap to the auditing profession in the case of Libya. The data was collected through a questionnaire survey randomly selected members of four broad interest groups including auditors, auditees and audit beneficiaries both inside and outside the financial community were followed by in-depth interviews. A total of 988 questionnaires were distributed from which 431 questionnaires with usable responses were received from four groups. The overall usable response rate was 44%, ranging from 47% for the financial community audit beneficiaries to 41% for the auditors group. The findings of the study revealed that there exists audit expectation-performance gap and that the gap is as result of the following factors in different levels of percentages. Deficiency standards and deficient performance gaps constitute 49% and 15%, respectively, of the audit expectation-performance gap. The audit expectation-performance gap derives from society having unreasonable expectations of auditor’s significant proportion 36% of the gap. As result of the following interviews demonstrated that the objectives of auditing are not as clear to the financial statement users as they are to the auditors and the financial statement preparers in Libyan business environment. Further, we observe that reducing the expectations gap is to improve knowledge responsibilities between the auditors and user groups and understanding of the auditor’s role and responsibilities through the provision of auditing illegal acts.     

X-efficiency in Australian banking: An empirical investigation

This paper empirically investigates the x-efficiency (technical and allocative) in Australian banks. A non-parametric method of Data Envelopment Analysis (DEA) has been used to arrive at the efficiency scores. Banks in this sample were found to have low levels of overall efficiency compared with the banks in the European countries and in the US. The results indicate that, as a source of overall inefficiency, the technical component was more important than the allocative component. Thus, the inefficiency in Australian banks can be attributed to wasting of inputs (technical inefficiency) rather than choosing the incorrect input combinations (allocative inefficiency). Domestic banks were found to be more efficient than foreign owned banks. The study has important implications such as guiding the government policy regarding deregulation and mergers. Since the study pinpoints the sources of inefficiency, it would also help banks with strategic planning.     

Order flow and volatility: An empirical investigation

We study the relationship between order flow and volatility. To this end we develop a comprehensive framework that simultaneously controls for the effects of macro announcements and order flow on prices and the effect of macro announcements on volatility. Using high-frequency 30-year U.S. Treasury bond futures data, we find a statistically and economically significant relationship between the absolute value of order flow and volatility. Moreover, this relationship is robust, inter alia, to a number of factors including the introduction of liquidity effects, use of data measured over a different frequency, and market conditions.     

Multiscaling and rough volatility: An empirical investigation

Pricing derivatives goes back to the acclaimed Black and Scholes model. However, such a modelling approach is known not to be able to reproduce some of the financial stylised facts, including the dynamics of volatility. In the mathematical finance community, it has therefore emerged a new paradigm, named rough volatility modelling, that represents the volatility dynamics of financial assets as a fractional Brownian motion with Hurst exponent very small, which indeed produces rough paths. At the same time, prices’ time series have been shown to be multiscaling, characterised by different Hurst scaling exponents. This paper assesses the interplay, if present, between price multiscaling and volatility roughness, defined as the (low) Hurst exponent of the volatility process. In particular, we perform extensive simulation experiments by using one of the leading rough volatility models present in the literature, the rough Bergomi model. A real data analysis is also conducted to test if the rough volatility model reproduces the same relationship. We find that the model can reproduce multiscaling features of the prices’ time series when a low value of the Hurst exponent is used, but it fails to reproduce what the real data says. Indeed, we find that the dependency between prices’ multiscaling and the Hurst exponent of the volatility process is diametrically opposite to what we find in real data, namely a negative interplay between the two.     

Costs and benefits of auditors' disclosure of critical audit matters: Initial evidence from the United States

In an effort to make audit reports more informative to financial statement users, the Public Company Accounting Oversight Board (PCAOB) requires an expanded audit report in which auditors are required to disclose critical audit matters (CAMs). The new standard (AS 3101) became effective for audits of financial statements of large accelerated filers for fiscal years ending on or after June 30, 2019. Using a sample of annual reports of large accelerated filers with and without CAM disclosures, we examine the costs and benefits of the mandatory disclosure of CAMs in auditors' reports. Our evidence suggests that compared to auditor reports reporting no CAMs, the presence of a single CAM disclosure in the auditor's report provides incremental information to equity investors without a significant increase in audit costs. However, using the benchmark of a single CAM disclosure, multiple CAMs in an auditor's report results in higher audit fees and longer audit delays.     

Accounting data and the credit spread: An empirical investigation

Measures of credit risk based on Merton (1974) rely upon information available in the market prices of securities. Under the Efficient Market Hypothesis market prices should reflect all available information and, hence, make redundant all other information in the analysis of credit risk. This paper examines whether accounting data are fully reflected in the market-based measures of credit risk and therefore has no role in explaining variations in the credit spread on corporate bonds. We use a sample consisting of over 11,000 firm-quarter observations with matched equity, bond and accounting data. The results suggest that equity volatility and Merton's distance-to-default outperform accounting variables in explaining variations in the credit spread. However, accounting variables are incrementally informative in explaining variations in the credit spread when considered in conjunction with market-based measures. Within the set of accounting variables considered, we find that the profitability ratio is by far the most incrementally informative accounting variable.     

Factors associated with internal audit function involvement with XBRL implementation in public companies: An international study

We examine the relationships of national legal system, company size, and corporate governance quality with internal audit function (IAF) involvement with eXtensible Business Reporting Language (XBRL) implementation in public companies. Our data source is The Institute of Internal Auditors' Global Internal Audit Common Body of Knowledge (CBOK) database, from which we extract responses from 692 chief audit executives (CAEs) for our investigation. We find evidence of differential effects of company size on IAF involvement with XBRL implementation, depending on the national legal system. In civil law countries, IAFs of small companies have significantly higher levels of XBRL involvement than do IAFs of large companies, whereas, in common law countries, IAFs of large companies have higher levels of involvement than do those of small companies. Finally, we find evidence that corporate governance quality is positively associated with IAF involvement with XBRL implementation.     

External auditors’ reliance on internal audit: the impact of sourcing arrangements and consulting activities

This study examines the impact of internal audit outsourcing and involvement in consulting on external auditors’ reliance on the work of internal audit. We test whether these factors influence reliance on internal audit work already undertaken and the use of internal auditors as assistants, distinguishing between control evaluation and substantive testing. Involvement in consulting impacts reliance on work undertaken and the use of internal auditors as assistants for control evaluation. External auditors make greater use of internal auditors as assistants for substantive testing when internal audit is provided in‐house. Overall, external auditors use internal audit more for control evaluation tasks.     

Discussion of: The effect of client gender and negotiation style on auditors' proposed audit adjustments

This article provides a discussion of the Hamrick, Schafer, and DeZoort (2023) study published in Advances in Accounting. The discussion first provides an overview of the study and strengths of the article. Constructive commentary follows, centered on understanding the theoretical underpinnings of the study's findings and the measurement of process variables to deepen our understanding of why these findings occurred. Additionally, I encourage expanded research using alternative methodologies to increase external validity of the study's findings. The commentary concludes with a discussion of future research opportunities to extend the study's compelling results, highlighting the importance of expanding our understanding of social stereotypes and gender dynamics in the auditor-client negotiations process.     

The effect of client gender and negotiation style on auditors' proposed audit adjustments

This study examines whether client gender affects the efficacy of two common negotiation strategies used by management when disputing a proposed audit adjustment. Eighty-two experienced auditors participated in an experiment in which CFO gender (female or male) and negotiation style (concessionary or contentious) were manipulated randomly between subjects. The results provide evidence of a gender-by-negotiation strategy interaction. Specifically, auditors are less likely to propose an audit adjustment for a male CFO who uses a contentious negotiation strategy as compared to the concessionary strategy. Conversely, auditors are more likely to propose an audit adjustment for a female CFO who uses a contentious negotiation strategy as compared to a male CFO who uses this same strategy. These findings indicate that the use of pressure-related tactics in negotiation is beneficial for male CFOs, but that female CFOs are penalized (as compared to male CFOs) for using contentious tactics.