The results showed that the JCCES exhibits excellent internal consistency, as evidenced by a Cronbach's Alpha of .96. The diverse range of difficulty levels, standard deviations, and polyserial correlation values among the items indicates that the JCCES is a comprehensive tool, capable of assessing a broad spectrum of crystallized cognitive abilities across various content areas. The use of the kernel estimator method further refined the evaluation of the examinee's abilities, emphasizing the significance of incorporating alternative answers in the test design to enhance inclusivity. The two-parameter logistic model (2PLM) demonstrated a good fit for the majority of the items, validating the test’s structure.
While the study confirms the reliability of the JCCES, it also notes potential limitations, such as the model’s fit for specific items and the potential for unexplored alternative answers. Addressing these in future research could further improve the test’s validity and application, offering richer insights for educational interventions and cognitive assessment.
The study’s findings play a crucial role in affirming the JCCES's reliability, showcasing its potential as a reliable tool for assessing crystallized cognitive skills.
Link to Full Article: Jouve, X. (2023) Evaluating the Jouve-Cerebrals Crystallized Educational Scale (JCCES): Reliability, Internal Consistency, and Alternative Answer Recognition. https://www.cogn-iq.org/articles/evaluating-jouve-cerebrals-crystallized-educational-scale-jcces-reliability-internal-consistency-alternative-answer-recognition.html
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