Table 2.

Comparison of TAS-20 total score and subscales scores between the adult prisoners and the adult norm of 2003 and 2007

		DIF	DDF	EOT	TAS-20 TOTAL
Samples of adult prisoners	(N = 1705)	19.95 ± 5.03	14.59 ± 2.87	21.93 ± 3.34	56.47 ± 8.61
The adult norm of 2003a	(N = 416)	17.33 ± 4.70	13.44 ± 3.29	18.91 ± 4.01	49.68 ± 9.24
t c		21.52***	16.56***	37.36***	32.60***
The adult norm of 2007b	(N = 870)	16.26 ± 4.75	13.26 ± 3.51	19.12 ± 3.86	48.65 ± 9.24
t d	30.31***	19.15***	34.77***	37.54***

^aFor the data source, see reference [61] (The Chinese version of the TAS-20: reliability and validity)

^bFor the data source, see reference [55] (Cross-cultural validation of a Chinese translation of the 20-item Toronto Alexithymia Scale)

^cComparison of TAS −20 total score and subscales scores between the adult prisoners and the adult norm of 2003

^dComparison of TAS −20 total score and subscales scores between the adult prisoners and the adult norm of 2007

*p < 0.05 **p < 0.01 ***p < 0.001