Validation of the hyperbolic temperament questionnaire in Iran.

OBJECTIVE: Because of the importance of the cross-cultural study of hyperbolic temperament in increasing knowledge related to borderline personality disorder (BPD), the present study was conducted to test the reliability, construct, criterion, and discriminant validity of the Hyperbolic Temperament Questionnaire (HTQ) in three Iranian samples. METHODS: Using a cross-sectional design, the HTQ 11-item version translated into Farsi was provided to three selected samples (total N = 558, 72% female, 18 to 77 years old with an average of 30.2 and a standard deviation of 10.3). The samples included non-personality disorder samples (n = 194), samples with BPD symptoms (n = 104), and samples with other personality disorder symptoms (n = 260). Data were collected using multiple validating measurements. Factor analysis was used to verify that the HTQ is unidimensional and correlations and regression models were used to examine its associations with other constructs. RESULTS: Factor analysis confirmed the single-factor structure of the HTQ in two non-personality disorder and BPD samples. The internal consistency of all items and the total scale were acceptable across the samples (α = 0.87 to 0.91). Positive correlations with maladaptive constructs such as negative affectivity and interpersonal sensitivity and negative correlations with adaptive constructs supported the criterion validity of HTQ. The HTQ was specifically related to borderline symptoms, even after controlling for similar constructs such as depression. CONCLUSION: The 11-item version of HTQ has acceptable reliability and validity in Iranian samples. Using this short tool for rapid screening of cases with BPD before common procedures such as clinical interviews helps to save diagnostic time and costs.