Eğitim Bilimleri Enstitüsü / Education

Permanent URI for this collectionhttps://hdl.handle.net/11727/2910

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Author: search.filters.author.Berberoglu, Giraysearch.filters.applied.f.language: search.filters.language.eng

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    A cross-cultural comparison of the self-efficacy of middle-school mathematics teachers across Turkey and the United States
    (2021) Sevgi, Sevim; Berberoglu, Giray; Cobb, Paul; Smith, Thomas M.
    This study aims to compare teachers' self-efficacy across Turkish and American in-service middle-school mathematics teachers. The samples consist of 379 Turkish and 245 American in-service middle-school mathematics teachers. The self-efficacy questionnaire of the Middle-school Mathematics and the Institutional Setting of Teaching (MIST) scale was used in the study. The exploratory factor analysis revealed two dimensions of the self-efficacy measures across the American and Turkish teachers, such as classroom management and student support strategies. The measurement invariance property of the scale was evaluated before comparing the means of the groups. Despite the differences between the education systems, teachers' efficacy beliefs function quite similarly across the countries. The statistically significant mean differences in the subscale scores of efficacy measures between Turkish and American samples have no practical value. In both countries, teachers reported high level of confidence in efficacy beliefs in classroom management and student support strategies.
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    Can Computerized Adaptive Testing Work in Students' Admission to Higher Education Programs in Turkey?
    (2017) Berberoglu, Giray; Kalender, Ilker
    Admission into university in Turkey is very competitive and features a number of practical problems regarding not only the test administration process itself, but also concerning the psychometric properties of test scores. Computerized adaptive testing (CAT) is seen as a possible alternative approach to solve these problems. In the first phase of the study, a series of CAT simulations based on real students' responses to science items were conducted in order to determine which test termination rule produced more comparable results with scores made on the paper and pencil version of the test. An average of 17 items was used to terminate the CAT administration for a reasonable reliability level as opposed to the normal 45 items. Moreover, CAT based science scores not only produced similar correlations when using mathematics subtest scores as an external criterion, but also ranked the students similarly to the paper and pencil test version. In the second phase, a live CAT administration was implemented using an item bank composed of 242 items with a group of students who had previously taken the exam the paper and pencil version of the test. A correlation of.76 was found between the CAT and paper and pencil scores for this group. The results seem to support the CAT version of the subtests as a feasible alternative approach in Turkey's university admission system.