Affiliation:
1. University of Hawai'i at Hilo
2. The University of Alabama at Birmingham
Abstract
ABSTRACT
We contribute to the literature by examining, for the first time, degrees of separation of duties and ask whether SOD is an effective preventive control. We develop a mathematical model of the theoretical number of organizational fraud incidents, with and without SOD. We find that SOD results in the same or increased possibilities of fraud, relative to a lack of SOD, and that SOD needs to prevent 99 percent of frauds to always be an effective preventive control. Moreover, SOD's effectiveness is impaired by collusion. We suspect, however, that while acknowledging this impairment most people disregard or assign a low probability to collusion. We find that even when we assign low probabilities, the sheer number of possible collusive engagements weakens SOD as an effective preventive control. We illustrate our results with evidence provided by the Association for Certified Fraud Examiners (ACFE).
Publisher
American Accounting Association
Subject
General Medicine,Cell Biology,Developmental Biology,Embryology,Anatomy
Reference43 articles.
1. Anderson,
U. L.,
Head
M. J.,
Ramamoorti
S.,
Riddle
C.,
Salamasick
M.,
and
SobelP. J.
2017.
Internal Auditing: Assurance & Advisory Services.
4th edition.
Lake Mary, FL:
Internal Audit Foundation.
2. Ashton,
R. H.
1974.
An experimental study of internal control judgments.
Journal of Accounting Research12 (
1):
143–
157.
https://doi.org/10.2307/2490532
3. Association of Certified Fraud Examiners (ACFE).
2018.
Report to the Nations: 2018 Global Study on Occupational Fraud and Abuse.
Austin, TX:
ACFE.
4. Barra,
R. A.
2010.
The impact of internal controls and penalties on fraud.
Journal of Information Systems24 (
1):
1–
21.
https://doi.org/10.2308/jis.2010.24.1.1
5. Barra,
R. A.,
and
GriggsK.
2007.
Internal controls: Lessons to be learned from fire.
International Journal of Services and Standards3 (
4):
375–
389.
https://doi.org/10.1504/IJSS.2007.015222