Citation
Ramli, Nur Farhana and Talib, Othman and Hassan, Siti Aishah and Abdul Manaf, Umi Kalthom
(2018)
Rasch analysis and differential item functioning of STEM teachers instructional preparedness instrument for urban and rural teachers.
International Journal of International Journal of Academic Research in Progressive Education and Development, 7 (4).
211 - 222.
ISSN 2226-6348
Abstract
STEM Teachers’ Instructional Preparedness instrument (STEMTIP) was developed in this study with of 40 items and consists of 5 main constructs. Using multistage cluster sampling, 252 teachers in Malaysia was selected as sample of the study. Rasch Model analyses the psychometric properties of the STEMTIP instrument. The results indicate that 40 items of the STEMTIP are well fitted to a latent unidimensional structure, as required by the Rasch Model. There are two items (ELA1 and EVA8) that show a psychometric properties of Differential Item Functioning in STEMTIP concerning school location. Finally, psychometric implications derived from the results of the present study are discussed and suggestions are provided for future investigations.
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