Detection Risk
The risk that the auditor's procedures fail to detect a material misstatement that exists.
AUD item-writers love a fact pattern where the risk of material misstatement (RMM = inherent risk × control risk) is assessed high, then ask what the auditor does. The answer hinges on the inverse relationship: holding audit risk constant, a higher RMM forces a lower acceptable detection risk, achieved through more persuasive evidence — more effective procedures, substantive work shifted from interim toward year-end, and larger sample sizes. The classic “tell” is a stem listing account characteristics; read them as IR/CR drivers, not detection-risk levers.
The trap is misattributing control. Only detection risk’s acceptable level is the auditor’s direct lever, set through procedures; inherent and control risk are assessed, not set by fiat. The auditor can never reduce inherent risk, and control risk drops below maximum only when controls are tested and found operating effectively (per SAS 145). Students also flip the relationship, wrongly raising detection risk as RMM rises. Memory hook: detection risk is the “do-it-yourself” component you control through your work; inherent and control risk are conditions you only evaluate.
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