“…Each item is rated on a 5-point Likert-type scale, ranging from 0 (always) to 4 (never). A small but growing literature suggests that the TDI has strong psychometric properties in both clinical and nonclinical samples, including an excellent Person Separation Index, no evidence of bias due to item-trait interaction, good discriminant and convergent validity, and control of major response sets (Balsamo, Giampaglia, & Saggino, 2014;Balsamo, Imperatori, et al, 2013;Balsamo, Romanelli, et al, 2013). In a recent study, three cutoff scores were recommended in terms of sensitivity, specificity, and classification accuracy for screening for varying levels (minimal, mild, moderate, and severe) of depression severity in a group of patients diagnosed with major depressive disorder .…”