Betul DEMIRBAG, Ali UNISEN, Abdullah YESILYURT

Training of Critical Thinking Skills in Teacher Candidates and Placebo Effect: A Quasi-Experimental Study

Problem Statement: In recent years many different studies have examinedcritical thinking disposition; however, these studies focus on investigatingthe variables that are related to this subject. There are actually fewempirical studies in the literature. It is clear that there is a need forexperimental research in order to comprehend the process of criticalthinking in-depth.Purpose of the Study: This study investigates the contrastive effect of anexperimental program and the placebo effect on the improvement ofcritical thinking disposition of university students.Method: Sixty-three participants from the students of Arabic LanguageEducation in the Faculty of Education in Adiyaman University weredivided into three classes as experiment, placebo, and control groups, eachof which consisted of 21 participants. As the placement was on an alreadyexisting class system, the study was conducted using a quasi-experimentaldesign. In the experiment group, an eight-week program, which wasdeveloped by researchers, was applied. The study was carried out in thelast 10 to 15 minutes of Educational Psychology lessons. In the placebogroup a positive atmosphere was provided in the class and the studentswere motivated toward critical thinking by being informed about thenecessities of it, and in the control group no applications were used.California Critical Thinking Disposition Inventory, which was adapted into Turkish by Kokdemir in 2003, was used to assess the critical thinking skills of the participants. SPSS 20.0 was used to analyze data. Variance analysis, independent samples t-test and Ancova analysis were used to examine the data. Findings and Results: Independent samples t-test results pointed out that there was not a significant difference between male and female participants. Variance analysis conducted for age variables produced no significant difference between the groups. It was found that the highest improvement in critical thinking disposition of teacher candidates was observed in the placebo group, and the experimental group ranked second; however, Ancova analysis showed that there were no significant differences between the experiment, the placebo and the control groups’ posttests. Conclusion and Recommendations: Age, gender, and groups of the student were observed as not being significant variables in critical thinking disposition at the end of the study. Within the study, it is an important finding that merely the effort for creating a positive atmosphere in the placebo group induces a better level of improvement than the experiment group where activity and practice were made possible. Findings were discussed based on the relevant literature. Keywords: Thinking, critical thinking, placebo effect, teacher candidates

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Eurasian Journal of Educational Research-Cover

ISSN: 1302-597X
Başlangıç: 2015
Yayıncı: Anı Yayıncılık

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