Abstract

BLUM, G. Diego et al. Modelling Figural Analogies Test with the Item Response Theory. Escritos de Psicología [online]. 2011, vol.4, n.3, pp.36-43. ISSN 1989-3809.

The psychometric properties of a Figural Analogies Test are described within the framework of Item Response Theory. Thirty-six 2x2 matrix figures were constructed by using location, distortion and number rules. The sample included 499 psychology students from the University of Buenos Aires, 79% of whom were women. The 3-Parameter Logistic Model was used obtaining a highly satisfactory global fit at 5% (p = .47). Only 3 items did not fit the model. It had good overall discriminatory power (a: M = 1.02, SD = .33), a medium level of difficulty (b: M = -.03, SD = .63) and the c level was slightly lower than expected with six possible answers (c: M = .14, SD= .05). The conditions for modelling the test and possible disadvantages of the present study are discussed.

Keywords : Analogies; Matrices; Item Response Theory.

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