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Development of Diagnostic Instruments for Critical Thinking Skills of Students in Physics Learning on Socio-Scientific Issues (SSI)

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R&D design assessed critical thinking skills on socio-scientific issues in physics education, highlighting measurement validation.

The diagnostic instrument demonstrated high reliability and was categorized as 'Highly Suitable' by expert validation.
Analysis using Rasch modeling confirmed unidimensionality with a raw variance explained of 30.9%, ensuring the model's integrity.
The instrument's reliability scores included a Cronbach's alpha of 0.81 and item reliability of 0.91, affirming measurement consistency.
Significant DIF based on gender and region was identified, pointing to the necessity for further revision to enhance measurement fairness.

Wulandari et al. (2025) studied this question.

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