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National Non-verbal Cognitive Ability Test (BNV) Development Study

Author

Listed:
  • Ahmet Bildiren
  • Özge Bıkmaz Bilgen
  • Mediha Korkmaz

Abstract

The aim of the present study is to develop a national non-verbal cognitive ability test in Turkey. Test items were developed during the first stage and applied as a pilot study on 3,073 children in the age interval of 4 to 13. The test was given its final form based on the values of item difficulty, item distinctiveness, item total score correlation. Norm study was carried out at 12 different provinces with a total of 9,129 children comprised of 4,464 females (49%) and 4,665 (51%) males. Test-retest, split-halves, KR-20, and KR-21 methods were applied for the reliability analyses of the study. Standard error, standard deviation, and reliability coefficient were calculated for the measurement. Content and construct validity along with criterion-related validity analysis methods were used for validity analyses. The KR-20 reliability coefficient obtained from the complete sample group was estimated as 0.92. Test-retest reliability coefficient was determined as 0.80. A correlation of .71 was determined between Naglieri Cognitive Ability test and BNV test. A correlation of .67 was determined between Toni-3 test and BNV test while a correlation of .86 was determined between BNV and Colored Progressive Matrices Test.

Suggested Citation

  • Ahmet Bildiren & Özge Bıkmaz Bilgen & Mediha Korkmaz, 2021. "National Non-verbal Cognitive Ability Test (BNV) Development Study," SAGE Open, , vol. 11(3), pages 21582440211, September.
    • Handle: RePEc:sae:sagope:v:11:y:2021:i:3:p:21582440211046945
    DOI: 10.1177/21582440211046945
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    References listed on IDEAS

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    1. Sobkow, Agata & Olszewska, Angelika & Traczyk, Jakub, 2020. "Multiple numeric competencies predict decision outcomes beyond fluid intelligence and cognitive reflection," Intelligence, Elsevier, vol. 80(C).
    2. Frederic Lord, 1952. "The relation of the reliability of multiple-choice tests to the distribution of item difficulties," Psychometrika, Springer;The Psychometric Society, vol. 17(2), pages 181-194, June.
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