It is a self-report assessment scale developed by Beck ve Beck (1991) to evaluate the cognitive dimension of personality, including various dysfunctional beliefs. Since its development in 1991, the PBQ has been used for clinical and research purposes in centers offering cognitive therapy.
By selecting items with high discriminant validity from the original PBQ, the authors developed the PBQ-SF (Personality Beliefs Questionnaire—Short Form), consisting of 65 items. The development of the PBQ-SF was conducted in two phases. In the first phase, the PBQs of outpatients with psychiatric disorders were evaluated. For each personality disorder, the seven items with the highest scores were selected from a set of 14 questions to create the PBQ-SF.
In the second phase, the developed PBQ-Short Form was administered to a new sample group of patients with psychiatric disorders. The internal consistency of the PBQ-Short Form was found to range between 0.81 and 0.92. Consequently, it was concluded that the scale is a reliable and practical tool for assessing personality (Butler et al., 2007).
Personality Beliefs Scale—Short Turkish Form: KİÖ-KTF:
It consists of statements designed to identify an individual’s core beliefs about himself, other people, and the world. Each question in the scale corresponds to the attitudes and beliefs associated with each personality disorder listed in the DSM: avoidant, dependent, passive-aggressive, obsessive-compulsive, antisocial, narcissistic, histrionic, schizoid, and paranoid. It contains a total of 65 items corresponding to the nine personality types. After reading the statements in each item, participants rate how well they apply to themselves on a scale from zero (I do not agree at all) to four (I agree completely). The scale is suitable for use in both the assessment and treatment of individuals with personality disorders. Permission was obtained from the authors of the original scale to translate and validate the PBQ-SF into Turkish. The Turkish short form of the PBQ, like the original short scale, was created by selecting items from the Turkish long form of the PBQ. For information on the validity study of the long form related to the Turkish translation process, see (Türkçapar et al., 2007).