The document outlines 6 stages of critical thinking development:
1) Unreflective thinker - People at this stage do not notice their assumptions and biases in thinking.
2) Challenged thinker - People become aware of problems in their thinking and lack of self-monitoring.
3) Practicing thinker - People recognize the need to systematically improve their thinking and develop awareness of better thinking habits.
4) Advanced thinker - People have good command over biases and strive to be fair-minded, while identifying areas they can improve.
5) Accomplished thinker - People have taken charge of their thinking, regularly assessing to improve clarity and reduce biases.
6) The accomplished thinker