Abstract

PARRADO CORREDOR, FELIPE ERNESTO; MARIN LONDONO, MARIA CAMILA  and  MARTINEZ MUNGUIA, CARLOS EDUARDO. Validity review of the BIS-15S for measuring impulsivity in university students. Psicol. caribe [online]. 2021, vol.38, n.1, pp.47-67.  Epub Oct 30, 2021. ISSN 0123-417X.  https://doi.org/10.14482/psdc.38.1.616.89.

In 2010, the first validation of the Barrat's impulsivity questionnaire BIS15-S for the Colombian population was reported, comparing the results of the scale of clinical and non-clinical samples. The BIS15-S use is widespread although no further studies have been conducted about the validity of the scale. The present study reexamines the validity of this scale for measuring impulsivity in a non-clinical sample. The questionnaire was applied to a sample of 255 undergraduate students in Psychology. Reliability of the test was assessed through a Cronbach's alpha test, to asses criteria validity the results were correlated with the scores of the same participants in the Self-control subscale of 16PF5 through a Pearson correlation test. Also construct validity was tested in two facto analysis, it was performed an exploratory and a confirmatory factor analysis on the 3-factor assumption (Motor, not planned and Attention) reported in the previously in the literature. The results showed that the instrument had a good reliability (α=.720) in the sample studied. There was a significant negative correlation (r=-,284, p<.001) of the three factors and the total score with the self-control score measured with 16PF5. The confirmatory factorial adjustment did not support the questionnaire construct validity. The three factors structure is not adequate to make predictive inferences about behavior of participants with any clinical condition. The results and implications on the test administration are discussed.

Keywords : impulsive behavior; assessment; factor analysis; validity.

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