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Psicologia: Reflexão e Crítica
Print version ISSN 0102-7972
ANDRIOLA, Wagner Bandeira. Differential items functioning (DIF): study with analogies for measurement the verbal reasoning. Psicol. Reflex. Crit. [online]. 2000, vol.13, n.3, pp. 475-483. ISSN 0102-7972. http://dx.doi.org/10.1590/S0102-79722000000300015.
This research aimed the determination of the differential item functioning (DIF) in 30 analogies used for the verbal reasoning assessment in students, taking into account the sex variable. A sample of 730 high school students, whose average age was 17,74 years (sd = 3,12 years) was used. The majority was composed by students from public schools (58,4%) and females (53,3%). The groups which participated in the study of DIF were composed by men (n= 342) and women (n= 388). The metric parameters of the items were determined according to the TRI model of two logistics parameters. For the determination of the DIF the method of comparation of the metric parameters of the items was used. The results indicated the presence of five items with DIF.
Keywords : Differential items functioning (DIF); item response theory (IRT); verbal reasoning; psychological assessment.