The standard measure of alexithymia — difficulty identifying and describing feelings and an externally oriented cognitive style. Associated with somatic disorders, addiction, and emotional processing difficulties. Widely used in clinical neuropsychology.
Bagby, R.M., Parker, J.D.A., & Taylor, G.J. (1994). The twenty-item Toronto Alexithymia Scale – I. Item selection and cross-validation of the factor structure. Journal of Psychosomatic Research, 38(1), 23–32.
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