Toronto Alexithymia Scale (TAS-20)
A package containing a master copy of the scale, scoring instructions, reliability, validity, and normative data can be obtained upon payment of a copyright fee. Further information can be obtained from Dr. Taylor’s website.
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, 23-32.
To assess people’s difficulty identifying feelings, difficulty describing feelings, and degree of externally-oriented thinking.
Participants indicate the degree to which they agree with statements describing themselves using a 5-Point Likert Scale.
1 = Strongly Disagree, 2 = Disagree, 3 = Neither Agree nor Disagree, 4 = Agree, 5 =Strongly Agree
Number of Items
20 (7 for difficult identifying feeling; 5 for difficulty describing feelings; 8 for externally-oriented thinking)
In undergraduate students (Bagby et al., 1994)
Internal consistencies (n = 965)
- Difficulty Identifying Feelings, Cronbach’s α = 0.81
- Difficulty Describing Feelings, Cronbach’s α = 0.78
- Externally-Oriented Thinking, Cronbach’s α = 0.66
- Total Alexithymia, Cronbach’s α = 0.81
Test-retest reliability for Total score (3 weeks; n = 72): r = 0.77
In PCS3 (n = 213)
- Difficulty Identifying Feelings, Cronbach’s α = 0.85
- Difficulty Describing Feelings, Cronbach’s α = 0.79
- Externally-Oriented Thinking, Cronbach’s α = 0.62
- Total Alexithymia, Cronbach’s α = 0.83
- Difficulty Identifying Emotions Subscale
- Difficulty Describing Emotions Subscale
- Externally Oriented Thinking Subscale
- Total Tas-20 Alexithymia Score