@article{article_280052, title={Preservice Elementary Mathematics Teachers’ Beliefs about Preparedness to Teach Mathematics: Scale Adaptation and Validation Study}, journal={Necatibey Faculty of Education Electronic Journal of Science and Mathematics Education}, volume={10}, pages={469–510}, year={2016}, DOI={10.17522/balikesirnef.280052}, author={Aydın, Serhat and Çelik, Derya}, keywords={Matematik öğretmeye hazır olma,öğretmen adayları,ölçek uyarlama,geçerleme.}, abstract={ In this paper, adaptation and validation of a scale measuring how prepared preservice elementary mathematics teachers perceive themselves to teach mathematics were explained. Exploratory and confirmatory factor analyses and test, item and option analyses according to Item Response Theory were conducted as proofs of validity. Cronbach’s alpha and Mc Donald’s omega were calculated both for ordinal and interval scales and for point estimates and confidence intervals. The findings were evaluated by an expert group and the researchers but no single perfect result was sought. Due to the subjective nature of some of the analyses and the following decisions in this type of studies, the analyses were made for all possible alternatives, the findings were presented for all ten versions and the decisions were left to the reader. Finally, nine versions of the scale all having a single latent trait (factor) with different validity (e.g. total variance explained ≥ % 53 and goodness-of-fit statistics RMSEA ≤ 1,00 in CFA and RMSEA ≤ 0,05 in IRT analyses) and reliability (α and Ω ≥ 0.90) parameters all of which exceeding the acceptable limits were delivered to the literature and researchers. <o:p> </o:p> }, number={2}, publisher={Balıkesir Üniversitesi}