Application of a Decision Aid in the Judgmental Evaluation of Substantive Test of Details Samples

Abstract

In order to express an opinion on the fairness of the presentation of the financial statements, an auditor collects evidence from a variety of sources. Much of this evidence is in the form of sample results that must be evaluated as to the level of sampling risk present (AICPA [1981, sec. 26]). Auditors often select and evaluate samples judgmentally rather than on the basis of a statistical method.' The assessment of risk, however, is a cognitively difficult task (Huber [1974, p. 434]), and often the results may be systematically biased (Tversky and Kahneman [1974]). It seems that there is a general problem of underutilizing or ignoring normatively