Meganck Reitske, Markey Samuel, Vanheule Stijn
Ghent University, Faculty of Psychology and Educational Sciences, Department of Psychoanalysis and Clinical Consulting, H. Dunantlaan 2, B-9000 Ghent, Belgium.
Psychol Rep. 2012 Oct;111(2):393-404. doi: 10.2466/02.08.15.PR0.111.5.393-404.
This study investigated the psychometric properties of the 20-item Toronto Alexithymia Scale (TAS-20) in an adolescent sample (N = 406, ages 12 to 17). This is rarely done even though the TAS-20 is used in adolescent research. Five published factor models were tested. For good fitting models, a second-order model with alexithymia as a higher-order factor and metric invariance across sex and age groups was tested. Confirmatory factor analyses showed that the original three-factor model and a four-factor model provided acceptable fit. Both models were invariant across sex, but not across age. Second-order models did not provide good fit. Reliability was good for the "Difficulty identifying feelings" subscale and acceptable for the "Difficulty describing feelings" subscale, but not for the "Externally oriented thinking" subscale. Measuring alexithymia with the TAS-20 in adolescents thus seems problematic, especially in younger age groups.
本研究调查了20项多伦多述情障碍量表（TAS-20）在青少年样本（N = 406，年龄在12至17岁之间）中的心理测量特性。尽管TAS-20在青少年研究中被使用，但很少有人这样做。对五个已发表的因子模型进行了测试。对于拟合良好的模型，测试了一个以述情障碍为高阶因子且在性别和年龄组间具有度量不变性的二阶模型。验证性因子分析表明，原始的三因子模型和一个四因子模型提供了可接受的拟合度。两个模型在性别上是不变的，但在年龄上不是。二阶模型拟合不佳。“难以识别情感”子量表的信度良好，“难以描述情感”子量表的信度可接受，但“外向性思维”子量表的信度不佳。因此，用TAS-20测量青少年的述情障碍似乎存在问题，尤其是在较年轻的年龄组中。
