Brief assessment of schizotypy: Developing short forms of the Wisconsin Schizotypy Scales

► Short forms (15 items each) of the Wisconsin Schizotypy Scales were developed. ► Based on IRT and DIF analyses, items with high discrimination but low DIF were selected. ► Internal consistency and intercorrelations were good and consistent with past work with the long scales. ► The brief scales had construct-consistent relations with measures of personality and mood disorder symptoms.