Abstract
The purpose of this study was to provide the evidence of psychometric evaluation on mathematics beliefs instrument (MBI) using Rasch model. 36 items of 5 point Likert scale with three constructs of mathematics beliefs towards nature, mathematics belief in teaching and mathematics beliefs in learning. 254 of secondary mathematics school teachers were selected to be the samples. The collected data were analysed using Winstep 3.69.1.11in order to obtain the Rasch Model output. The findings revealed that the MBI has reliability value of 0.98 with separation index 6.27. The person reliability has value of 0.81 and the separation index of 2.08. Some misfits items were modified accordingly based on the fit statistics suggestions. The Rasch model output has provided statistical evidence for MBI for future purposes.
Highlights
One of important aspects to be studied in mathematics education is belief
Mathematics beliefs are limited to empirical measurement only since the focus is more on its relationship with other variables (Swan, 2002) such as the effect on instructional practices (Beswick, 2005, 2007)
The importance of this study is to provide psychometrical characteristics of mathematics beliefs instrument
Summary
One of important aspects to be studied in mathematics education is belief. Mathematics beliefs play a role in shaping teachers’ practices and create their attitude towards teaching (Swan, 2002). Being successful teachers would derive beliefs system effectively through teaching process (Wilkins, 2008). There are increasing numbers of researches on beliefs, the focus is mainly on its relationship with other variables. The beliefs system has a dynamic structure which can be related to achievement, teaching practices and knowledge (Muijs & Reynolds, 2002). Mathematics beliefs are limited to empirical measurement only since the focus is more on its relationship with other variables (Swan, 2002) such as the effect on instructional practices (Beswick, 2005, 2007). By testing the chosen the instrument of mathematics beliefs would lead to a reliable validated meas-
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