The differential item functioning and structural equivalence of a nonverbal cognitive ability test for five language groups

SA Journal of Industrial Psychology


 
 
Field Value
 
Title The differential item functioning and structural equivalence of a nonverbal cognitive ability test for five language groups
 
Creator Schaap, Pieter
 
Subject Psychological testing PIB/SpEEx 401; DIF; Observance test; visual items; factorial congruence
Description Orientation: For a number of years, eliminating a language component in testing by using nonverbal cognitive tests has been proposed as a possible solution to the effect of groups’ languages (mother tongues or first languages) on test performance. This is particularly relevant in South Africa with its 11 official languages.Research purpose: The aim of the study was to determine the differential item functioning (DIF) and structural equivalence of a nonverbal cognitive ability test (the PiB/SpEEx Observance test [401]) for five South African language groups.Motivation for study: Cultural and language group sensitive tests can lead to unfair discrimination and is a contentious workplace issue in South Africa today. Misconceptions about psychometric testing in industry can cause tests to lose credibility if industries do not use a scientifically sound test-by-test evaluation approach.Research design, approach and method: The researcher used a quasi-experimental design and factor analytic and logistic regression techniques to meet the research aims. The study used a convenience sample drawn from industry and an educational institution.Main findings: The main findings of the study show structural equivalence of the test at a holistic level and nonsignificant DIF effect sizes for most of the comparisons that the researcher made.Practical/managerial implications: This research shows that the PIB/SpEEx Observance Test (401) is not completely language insensitive. One should see it rather as a language-reduced test when people from different language groups need testing.Contribution/value-add: The findings provide supporting evidence that nonverbal cognitive tests are plausible alternatives to verbal tests when one compares people from different language groups.
 
Publisher AOSIS
 
Contributor na
Date 2011-10-13
 
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — A quasi-experimental research design
Format text/html application/epub+zip text/xml application/pdf
Identifier 10.4102/sajip.v37i1.881
 
Source SA Journal of Industrial Psychology; Vol 37, No 1 (2011); 16 pages 2071-0763 0258-5200
 
Language eng
 
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Coverage NA NA 5 language groups; average age 22; male and female
Rights Copyright (c) 2011 Pieter Schaap https://creativecommons.org/licenses/by/4.0