This document outlines 21 skills associated with critical thinking. For each skill, it provides a brief description of behaviors exhibited by people who demonstrate that skill. The skills discussed include persisting, managing impulsivity, listening with understanding and empathy, thinking flexibly, thinking about thinking, striving for accuracy, questioning and problem posing, applying past knowledge, thinking and communicating with clarity, gathering data through senses, creating and innovating, responding with wonder, taking responsible risks, finding humor, thinking interdependently, and learning continuously.