[Critical thinking] involves three things: (1) an attitude of being disposed to consider in a thoughtful way the problems and subjects that come within the range of one’s experiences, (2) knowledge of the methods of logical inquiry and reasoning, and (3) some skill in applying those methods. Critical thinking calls for a persistent effort to examine any belief or supposed form of knowledge in the light of the evidence that supports it and the further conclusions to which it tends. It also generally requires the ability to recognize problems, to find workable means for meeting those problems, to gather and marshal pertinent information, to recognize unstated assumptions and values, to comprehend and use language with accuracy, clarity, and discrimination, to interpret data, to appraise evidence and evaluate arguments, to recognize the existence (or non-existence) of logical relationships between propositions, to draw warranted conclusions and generalizations, to put to test the conclusions and generalizations at which one arrives, to reconstruct one’s patterns of belief on the basis of wider experience, and to render accurate judgments about specific things and qualities in everyday life.
Glaser, E. (1941). An Experiment In the Development of Critical Thinking. New York, NY: Bureau of Publications, Teachers’ College, sid. 5-6
Possin, K. (2014), Critique of the Watson-Glaser Critical Thinking Appraisal Test: The More You Know, the Lower Your Score, Informal Logic, vol. 34, nr. 4, sid. 393-416.