RELIABILITY ESTIMATE IN THE MEASUREMENT OF TWO ITEMS: ANGOFF-FELDT COEFFICIENT

Authors

  • Sergio Alexis Domínguez Lara Universidad de San Martín de Porres , Lima, Perú
  • César Ayax Merino Soto Universidad de San Martín de Porres , Lima, Perú
  • Jhonatan S. Navarro Loli Universidad de San Martín de Porres , Lima, Perú

DOI:

https://doi.org/10.19083/ridu.10.463

Keywords:

reliability, Angoff-Feldt, congeneric measures

Abstract

Nowadays, the use of brief measurements in psychological evaluations is extending rapidly, but many times the reliability analysis of the scores is limited by the conditions which must be overcome to use certain coefficients (e.g. α coefficient). The compliance of the tau equivalent measurement model is one of the most important the α coefficient demands, and as it is not achieved, the estimate may be biased. The aim of this paper is to present the Angoff-Feldt (rAF) coefficient for reliability estimate, to be used in congeneric measures, that is, those that do not comply with the demands of the α coefficient (e.g. tau equivalent model). Although rAF was initially thought for two congeneric halves, this paper presents the application for the measurement of two items, assuming each is a half. An example of its usefulness is provided and the possibility of implementing its use discussed. 

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Published

2016-06-30

How to Cite

Domínguez Lara, S. A., Merino Soto, C. A., & Navarro Loli, J. S. (2016). RELIABILITY ESTIMATE IN THE MEASUREMENT OF TWO ITEMS: ANGOFF-FELDT COEFFICIENT. Revista Digital De Investigación En Docencia Universitaria, 10(1), 34–40. https://doi.org/10.19083/ridu.10.463

Issue

Section

Methodological articles