Spanish adaptation of Dickman's impulsivity inventory: its relationship to Eysenck's personality questionnaire

We used exploratory factor analysis to determine the factorial structure of the Spanish adaptation of Dickman's impulsivity inventory in a sample of 355 university students. Our results showed the two impulsivity factors, functional and dysfunctional, described by Dickman (1990). We applied consensus direct oblimin rotation to the Spanish, American and Dutch versions of the inventory and obtained a high congruence between the three factorial solutions which seems to suggest that they are quite stable across languages and populations. Both kinds of impulsivity showed relationships to the extraversion and psychoticism dimensions of the EPQ-R although extraversion was more related to functional impulsivity and psychoticism was more related to dysfunctional impulsivity. (C) 2003 Elsevier Ltd. All rights reserved.