In this compilation, critical aspects of the internal audit function are contrasted in order to provide an insight into the value of internal auditing and, within that, to submit arguments for the implementation and maintenance of an internal audit function.The authors examine how to optimize the allocation of audit resources over an auditee population with respect to available population statistics. The included survey mainly deals with audit situations where the auditee is assumed to behave rationally and optimize its expected utility based on information regarding the audit...