he idea of critical thinking that individuals follow to contemplate upon particular subjects has its ancient Greek roots. The word critical is derived from Greek words â€œkritcosâ€ (understanding the concept and forming judgements) and â€œcriterionâ€ (the principles of analysis).
Placing an emphasis on critical thinking, it should not be mistaken with the concept of intelligence. According to Haskings (2006), â€œcritical thinking is more than thinking logically or analyticallyâ€. It also means thinking rationally or objectively. Logic and analysis are fundamental and measured concepts, whereas thinking rationally and objectively are wider impressions that also represent the fields psychology and sociology. Rudinov and Barry (2004) stated that â€œcritical thinking is a process where an individual exhibits his complex, intellectual activity.â€
Pointing toward different definitions of critical thinking, Lipman noted that it would be useful to clarify what non-critical thinking stands for before outlining critical thinking. According to Lipman, non-critical thinking represents unstructured, unplanned, jumbled, and inaccurate ways of thinking, which is why he well-defined critical thinking as a functional thinking.