Critical thinking is that mode of thinking – about any subject, content, or problem — in which the thinker improves the quality of his or her thinking by skillfully taking charge of the structures inherent in thinking and imposing intellectual standards upon them. (Paul and Elder, 2001). The Paul-Elder framework has three components:
- The elements of thought (reasoning)
- The intellectual standards that should be applied to the elements of reasoning
- The intellectual traits associated with a cultivated critical thinker result from the consistent and disciplined application of the intellectual standards to the elements of thought

https://louisville.edu/ideastoaction/about/criticalthinking/framework