|Application||The Social Phobia Diagnostic Questionnaire has been developed with the aim to screen for social phobia and differentiate social phobia from other anxiety disorders.|
|Composition||The 25 items of the SPDQ are used to calculate a total score for social phobia. The items are rated either in a yes or no format or a 5-point Likert scale. Additionally to fear, the SPDQ also measures avoidance in a range of social situations.|
|Reliability & Validity||The SPDQ achieved very good values in the investigation of its psychometric properties. The internal consistency of the scale, as measured by Cronbach’s Alpha was 0.95 and the split-half reliability r = 0.90. A cut-off point of 7.38 has been chosen for an optimal balance between sensitivity (82%) and specificity (85%).|
Newman, M. G., Kachin, K. E., Zuellig, A. R., Constantino, M. J., & Cashman-McGrath, L. (2003). The Social Phobia Diagnostic Questionnaire: Preliminary validation of a new self-report diagnostic measure of social phobia. Psychological Medicine, 33(04), 623-635.
© Newman, M. G.