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There are many definitions of critical thinking. One I like to think of is this:

"A way of reasoning that demands adequate support for ones beliefs and an unwillingness to be persuaded unless support is forthcoming "  Tama, C. (1989).

Basically this says that in order to 'believe' something, you must have proof for that belief, but that you WILL be willing to change your belief if it is disproved.

Essence of critical thinking:

• Claims you adhere to or live by must be supported
• You are willing to change your thinking if a claim is disproved

How do you support a claim?

Most proponents of critical thinking us the scientific method as a means to validate or support a claim.

Some proponents of critical thinking will accept a claim that is made by a person who

• Has relevant expertise
• Has no motive to receive
• Is making a reasonable claim
• Is not making an irrefutable claim

Tama, C. (1989). Critical thinking has a place in every classroom. Journal of Reading, 33, 64-65.