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Probing what’s behind the test score: application of multi-CDM to diagnose EFL learners’ reading performance

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Abstract

Cognitive diagnostic assessment seeks to promote targeted instruction designed to address learners’ strengths and weaknesses within a specific domain. Most of the previous CDA applications, however, have merely implemented a single CDM. Few studies have investigated the applicability of multi-CDM to educational assessment data. To this end, the present study attempted to diagnose a sample of 740 college freshmen’s performance on a reading comprehension test designed by the PELDiaG (Personalized English Learning: Diagnosis & Guidance) research team from a key university in China with the multi-CDM. The model-data fit results showed that the multi-CDM outperformed any single CDMs and enhanced the interpretation of the inter-skill relationship as well. Consequently, both group and individual level diagnostic information were extracted and further synthesized into a fine-grained diagnostic feedback. The findings provided further evidence pertinent to the practicality of multi-CDM in reading comprehension tests. Finally, limitations and suggestions for further research were presented.

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Acknowledgements

We would like to thank all the team members of PELDiaG for the great efforts they have made on constructing the diagnostic reading test prior to this study. We also want to express our sincere gratitude to the two anonymous reviewers for their constructive comments and suggestions for the refinement of this manuscript.

Funding

This work was supported by the National Social Science Fund of China under Grant No. 17BYY015, and the National Education Examinations Authority—British Council English Assessment Research under Grant No. EARG2020004.

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Correspondence to Wenbo Du or Xiaomei Ma.

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Appendices

Appendix 1

See Table 9.

Table 9 E-Qmat constructed by experts

Appendix 2

See Table 10.

Table 10 S-Qmat based on students' verbal report

Appendix 3

See Table 11.

Table 11 R-Qmat with revised items shadowed with italics

Appendix 4

See Table 12.

Table 12 Coding guide for verbal reports

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Du, W., Ma, X. Probing what’s behind the test score: application of multi-CDM to diagnose EFL learners’ reading performance. Read Writ 34, 1441–1466 (2021). https://doi.org/10.1007/s11145-021-10124-x

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  • DOI: https://doi.org/10.1007/s11145-021-10124-x

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