ABSTRACT Concern about effective auditing of fair value measurements (FVMs) has risen in recent decades. Building on prior interview-based and experimental research, we provide an engagement-level analysis of challenging FVMs, using quantitative and qualitative data on audit phases from risk assessment to booking adjustments. Challenging FVMs have high estimation uncertainty, high subjectivity, significant/complex assumptions, and multiple valuation techniques. Estimation uncertainty is associated with higher inherent risk assessments, which are, in turn, predictive of client problems identified during the engagement. The use of a valuation specialist by auditors, associated with higher inherent risk and client specialist use, is a key decision: procedures performed by specialists have the highest yield in identifying problems. Auditor-client discussion of an adjustment increases with problem identification and auditors' expressions of residual concern about uncertainty post-testing. However, booked audit adjustments are infrequent; the only factors explaining income-decreasing adjustments are better evidential support and breadth of problems identified.

ABSTRACT The PCAOB recently considered implementing mandatory audit firm rotation in hopes of better aligning auditors' interests with investors' interests, suggesting that the PCAOB views long auditor tenure as problematic. However, the accounting profession argues that long tenure actually improves audit quality. This study provides insight into investors' views by evaluating the market's reaction to events related to the potential adoption of rotation that occurred between 2011 and 2013. The results provide some evidence that the market reacts negatively (positively) to events that increased (decreased) the likelihood of rotation, although these results are sensitive to the market index used to calculate abnormal returns. More importantly, particularly given the lack of a U.S.-specific control group, cross-sectional tests provide strong evidence that the market reaction is more negative (positive) on dates that increased (decreased) the likelihood of rotation given longer auditor tenure. Moreover, we also find that the market reaction is more negative (positive) on dates that increased (decreased) the likelihood of rotation given a Big 4 auditor. Data Availability: Data are available from public sources identified in the text.

ABSTRACT In this study, we examine how information foraging by auditors affects audit evidence collection in two distinct contexts, and show how a small change to audit methodology mitigates the potentially harmful effects of foraging. Information Foraging Theory explains how, while navigating an information environment, individuals learn to acquire information through personally experiencing the costs incurred and the values obtained from information. Consistent with the theory, we find that auditors react to the immediately felt costs of information collection (e.g., time and effort) at the expense of a more global consideration of information value (i.e., auditors collect lower-quality audit evidence). However, foraging behavior is moderated by removing the personal cost to the individual auditor (identifying audit evidence for another member of the audit team to collect), further demonstrating that these personally felt costs influence auditor choices in a way that reduces the quality of information collected. We contribute to the literature by demonstrating how information foraging can influence evidence quality and, thus, audit quality, and how a slight alteration of audit methodology can mitigate this behavior.