Özet:

The purpose of this study is to develop a valid and reliable scale that aims to measure the mental state of middle school students in conceptual learning. The pilot study was conducted with a total of 321 students, 168 of which were in the seventh grade and 153 of which were in the eighth grade. A draft scale consisting of 62 items was created by reviewing the literature and asking opinions of experts in the area. In order to determine the construct validity of the scale, exploratory and confirmatory factor analysis was performed. After the analysis of pilot study data, some items were removed from the scale and the remaining 35 items were found to be dived into 4 subcategories in total. It was determined that the emotion and intention categories of the scale consisted of two factors and the other categories of internal and external mental states showed a single-factor structure. The significance of the difference between item scores of the upper and lower subgroups of 27 percent was also tested in order to determine the discrimination indices of the scale items. The results of the t-tests show that the differences are significant for all items and factors. As a result of the reliability analysis, the Cronbach alpha coefficients for the reliability of the scale subcategories ranged from .67 to .79 and the Cronbach alpha internal consistency coefficient for the whole scale was calculated to be .90. These analyses show that the developed Mental State Scale in Conceptual Learning (MSSCL) is a valid and reliable measurement tool.

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