During fieldwork, an internal auditor located a significant internal control issue.

The internal auditor's failure to identify the origins of a significant control issue before concluding the engagement suggests a lack of critical thinking skills. Critical thinking involves analyzing and evaluating an issue thoroughly to understand its root causes before forming a judgment. Improving this skill would enhance the auditor's ability to conduct deeper analyses and provide more valuable insights in audit reports.

Institute of Internal Auditors (IIA) - Competency Framework for Internal Auditors