Özet:

This study investigated the validity and reliability of the Turkish version of the Thinking Styles Inventory (Sternberg & Wagner, 1992) within the framework of Sternberg's (1988) theory of mental self-government. The inventory was administered to 402 prospective teachers who were enrolled in English, Mathematics, and Science Teaching Programs at Yildiz Technical University, in Istanbul, Turkey. The prospective teachers were from various universities such as Istanbul ( 24%), Bogazici (19%), Yildiz Technical (19%), Fatih (19%), and other (19%). Pearson product moment correlation coefficients between the Turkish and English versions of the inventory ranged from, 0.40 to 0.99, with the exception of items 4 and 73, which indicated acceptable reliability. All the correlation coefficients were significant at 0.01 level. The results of factor analysis for construct validity of the inventory addressed 13 subscales under the five dimensional constructs with 70 items. The total internal consistency of the scale's items was 0.89. Findings demonstrated that the subscales had internal consistency and item-total correlations ranged from 0.37 to 0.88. Test- retest reliability scores for the subscales ranged between 0.63 and 0.78. The results were discussed in terms of the validity and reliability of the Turkish version.

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