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The Development, Validation, And Standardization Of A New Tool: The Dyscalculia Test, Stella Eteng-Uket

Numeracy

This paper describes a study that focused on developing, validating and standardizing a dyscalculia test, henceforth called the Dyscalculia Test. Out of the 4,758,800 students in Nigeria's upper primary and junior secondary schools, l randomly drew a sample of 2340 students, using a multistage sampling procedure that applied various sampling techniques. For data collection, I used the Test of General Reasoning Ability and Paper 1 of the Mathematics Achievement Test section of the 2021 National Common Entrance Examination, as well as the Dyscalculia Test introduced in this paper, which was developed and standardized in stages. My analysis shows that the …