Abstract
Aim of the studyTo examine the validity and reliability of the Personality Belief Questionnaire (PBQ) in Argentina.Subject or material and methodsA forward translation of PBQ from English to Spanish was carried out by two independent bilingual translators. An expert committee subsequently compared the translations with the original PBQ and a final version was derived by consensus. Then, internal structure and internal consistency of Argentinean version of PBQ were evaluated using a convenience sample of 402 individuals drawn from clinical (25%) and general (75%) population of Cordoba, Argentina. To test the internal structure a Procrustes rotation with target matrices and Tucker’s congruence coefficients were used. Cronbach’s alpha and confidence intervals were calculated to estimate the internal consistency.ResultsFindings showed that seven of the nine PBQ scales were replicable: avoidant, dependent, obsessive-compulsive, histrionic, paranoid, schizoid and schizotypal. Antisocial and narcissistic scales revealed little discrimination between them. Reliability analysis indicated acceptable to high internal consistency for all PBQ scales, with Cronbach’s alpha ranging from .75 for avoidant and antisocial to .90 for paranoid.DiscussionResults support the validity and reliability of the PBQ in Argentina, providing with a practical assessment tool for dysfunctional beliefs associated to personality disorders that can be applied with clinical and research purposes.ConclusionsThe psychometric properties of the PBQ in Argentina are satisfactory. However, additional study assessing the external validity is warranted.
Highlights
Dysfunctional beliefs constitute cognitions that are distorted, inaccurate or irrational, and that influence how individuals usually perceiveDrawing on clinical experience and theoretical considerations, Beck, Freeman and associates [4] published an extensive list of dysfunctional beliefs
Using these sets of beliefs, Beck and Beck [5] developed the Personality Belief Questionnaire (PBQ) with the intend to assesses dysfunctional beliefs associated with each personality disorder (PD), and to provide valuable information for differential diagnosis, cognitive case conceptualization and intervention target [3,6]
Items for borderline and schizotypal PDs were not included in the PBQ because these two disorders were not considered to be characterized by a unique set of dysfunctional beliefs [7]
Summary
Drawing on clinical experience and theoretical considerations, Beck, Freeman and associates [4] published an extensive list of dysfunctional beliefs. They stated that each PD is characterized by a particular set of dysfunctional beliefs that underlie a patient’s maladaptive behaviors and emotions. Items for borderline and schizotypal PDs were not included in the PBQ because these two disorders were not considered to be characterized by a unique set of dysfunctional beliefs [7]. It was suggested that patients with a borderline PD endorse a mixture of beliefs associated with different PDs, while those with a schizotypal personality profile are best described by dysfunction in the process of thinking rather than by idiosyncratic content of their thoughts [4]
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