Özet:

In this study various definitions of critical thinking and role of the teacher on the critical thinking are explained In addition measurement instruments related to critical thinking are introduced The porpuse of the present study was to investigate reliability of Watson Glaser Critical Thinking Appraisal W GEAYGÖ The sample consisted of 270 University students attended different classes second grade n:136 third grade n:50 fourth grade n:84 English teaching department at Cukurova University The Cronbach’s Alfa for the W GEAYGÖ was 38 Cronbach’s Alfa for subscale of inference 28 subscale of recognition of assuptions 35 subscale of deduction 14 subscale of interpretation 20 subscale of evaluation of arguments 10 Computed Guttman Split Half score was astimated as 31 Key Words: Thinking Critical Thinking Critical Thinking Scale

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