This document provides information on checklists, including their use, characteristics, construction, advantages, and disadvantages. A checklist is a simple instrument used to evaluate performance by noting the presence or absence of traits or behaviors. It consists of a list of steps, activities, or behaviors that an observer records. Checklists should clearly specify behaviors to observe, use carefully prepared items, and train observers on use. They allow comparison and objective evaluation but only assess presence/absence of attributes, so quality cannot be determined.