The assessment of alexithymia: A critical review of the literature and a psychometric study of the Toronto Alexithymia Scale-20
Objective: The objectives were to give an overview of studies on the validity of the Toronto Alexithymia Scale (TAS-20) and to present data regarding the validity of the TAS-20. Methods: The literature on the psychometric properties of the TAS-20 was reviewed and a study was conducted of its psychom...
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| Veröffentlicht in: | Journal of psychosomatic research 2002-12, Vol.53 (6), p.1083-1090 |
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| container_title | Journal of psychosomatic research |
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| creator | Kooiman, C.G Spinhoven, P Trijsburg, R.W |
| description | Objective: The objectives were to give an overview of studies on the validity of the Toronto Alexithymia Scale (TAS-20) and to present data regarding the validity of the TAS-20.
Methods: The literature on the psychometric properties of the TAS-20 was reviewed and a study was conducted of its psychometric properties in a sample of students and a sample of psychiatric outpatients using a statistical method allowing identification of a stable factor structure.
Results: The review revealed that the majority of studies on the TAS-20 were conducted with nonpatient samples. The factorial validity and reliability of the dimensions ‘identifying feelings’ (DIF) and ‘describing feelings’ (DDF) could be replicated in many of these studies. However, in practically all studies the dimension ‘externally oriented thinking’ (EOT) appears to be unreliable. In addition, the presupposed fantasy aspect of the alexithymia construct is not included in the TAS-20. Although many studies were conducted on the construct validity of the TAS-20, no studies have been published on its criterion validity. Some studies show a different factor structure to exist in patient samples. This was confirmed in our own study in which the dimensions ‘identifying feelings’ and ‘describing feelings’ collapsed into one single subscale. As in other studies, the reliability of the dimension ‘EOT’ was low.
Conclusion: The TAS-20 has some important shortcomings with respect to validity and reliability. For the assessment of alexithymia in empirical research, it is recommended to use the TAS-20 in combination with other instruments. We do not recommend the TAS-20 to be used in clinical practice. |
| doi_str_mv | 10.1016/S0022-3999(02)00348-3 |
| format | Article |
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Methods: The literature on the psychometric properties of the TAS-20 was reviewed and a study was conducted of its psychometric properties in a sample of students and a sample of psychiatric outpatients using a statistical method allowing identification of a stable factor structure.
Results: The review revealed that the majority of studies on the TAS-20 were conducted with nonpatient samples. The factorial validity and reliability of the dimensions ‘identifying feelings’ (DIF) and ‘describing feelings’ (DDF) could be replicated in many of these studies. However, in practically all studies the dimension ‘externally oriented thinking’ (EOT) appears to be unreliable. In addition, the presupposed fantasy aspect of the alexithymia construct is not included in the TAS-20. Although many studies were conducted on the construct validity of the TAS-20, no studies have been published on its criterion validity. Some studies show a different factor structure to exist in patient samples. This was confirmed in our own study in which the dimensions ‘identifying feelings’ and ‘describing feelings’ collapsed into one single subscale. As in other studies, the reliability of the dimension ‘EOT’ was low.
Conclusion: The TAS-20 has some important shortcomings with respect to validity and reliability. For the assessment of alexithymia in empirical research, it is recommended to use the TAS-20 in combination with other instruments. We do not recommend the TAS-20 to be used in clinical practice.</description><identifier>ISSN: 0022-3999</identifier><identifier>EISSN: 1879-1360</identifier><identifier>DOI: 10.1016/S0022-3999(02)00348-3</identifier><identifier>PMID: 12479990</identifier><identifier>CODEN: JPCRAT</identifier><language>eng</language><publisher>Amsterdam: Elsevier Inc</publisher><subject>Affective symptoms ; Affective Symptoms - classification ; Affective Symptoms - diagnosis ; Affective Symptoms - psychology ; Alexithymia ; Assessment ; Biological and medical sciences ; Diagnosis, Differential ; Female ; Humans ; Literature reviews ; Male ; Medical sciences ; Personality tests ; Psychiatric Status Rating Scales ; Psychology ; Psychology. Psychoanalysis. Psychiatry ; Psychometric properties ; Psychometrics ; Psychometrics. Diagnostic aid systems ; Psychopathology. Psychiatry ; Sensitivity and Specificity ; Techniques and methods ; Toronto Alexithymia Scale</subject><ispartof>Journal of psychosomatic research, 2002-12, Vol.53 (6), p.1083-1090</ispartof><rights>2002 Elsevier Science Inc.</rights><rights>2003 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c376t-afe8046e5739a53be144fc0e8ba64ee564c57b83864f0808771b55b3797878263</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0022399902003483$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,30977,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14381737$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12479990$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kooiman, C.G</creatorcontrib><creatorcontrib>Spinhoven, P</creatorcontrib><creatorcontrib>Trijsburg, R.W</creatorcontrib><title>The assessment of alexithymia: A critical review of the literature and a psychometric study of the Toronto Alexithymia Scale-20</title><title>Journal of psychosomatic research</title><addtitle>J Psychosom Res</addtitle><description>Objective: The objectives were to give an overview of studies on the validity of the Toronto Alexithymia Scale (TAS-20) and to present data regarding the validity of the TAS-20.
Methods: The literature on the psychometric properties of the TAS-20 was reviewed and a study was conducted of its psychometric properties in a sample of students and a sample of psychiatric outpatients using a statistical method allowing identification of a stable factor structure.
Results: The review revealed that the majority of studies on the TAS-20 were conducted with nonpatient samples. The factorial validity and reliability of the dimensions ‘identifying feelings’ (DIF) and ‘describing feelings’ (DDF) could be replicated in many of these studies. However, in practically all studies the dimension ‘externally oriented thinking’ (EOT) appears to be unreliable. In addition, the presupposed fantasy aspect of the alexithymia construct is not included in the TAS-20. Although many studies were conducted on the construct validity of the TAS-20, no studies have been published on its criterion validity. Some studies show a different factor structure to exist in patient samples. This was confirmed in our own study in which the dimensions ‘identifying feelings’ and ‘describing feelings’ collapsed into one single subscale. As in other studies, the reliability of the dimension ‘EOT’ was low.
Conclusion: The TAS-20 has some important shortcomings with respect to validity and reliability. For the assessment of alexithymia in empirical research, it is recommended to use the TAS-20 in combination with other instruments. We do not recommend the TAS-20 to be used in clinical practice.</description><subject>Affective symptoms</subject><subject>Affective Symptoms - classification</subject><subject>Affective Symptoms - diagnosis</subject><subject>Affective Symptoms - psychology</subject><subject>Alexithymia</subject><subject>Assessment</subject><subject>Biological and medical sciences</subject><subject>Diagnosis, Differential</subject><subject>Female</subject><subject>Humans</subject><subject>Literature reviews</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Personality tests</subject><subject>Psychiatric Status Rating Scales</subject><subject>Psychology</subject><subject>Psychology. Psychoanalysis. Psychiatry</subject><subject>Psychometric properties</subject><subject>Psychometrics</subject><subject>Psychometrics. Diagnostic aid systems</subject><subject>Psychopathology. Psychiatry</subject><subject>Sensitivity and Specificity</subject><subject>Techniques and methods</subject><subject>Toronto Alexithymia Scale</subject><issn>0022-3999</issn><issn>1879-1360</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>7QJ</sourceid><recordid>eNqF0T1vFDEQBmALEZEj8BNAboigWBjb649NE50iIEiRKHLUltc7qzPaj8P2Alfx1_ElF1JSWbKeeaWZl5BXDN4zYOrDLQDnlWia5i3wdwCiNpV4QlbM6KZiQsFTsvpHTsnzlL4DgGq4fEZOGa91-YYV-bPZInUpYUojTpnOPXUD_g55ux-Du6Br6mPIwbuBRvwZ8NdB5DIzhIzR5SWW8amjju7S3m_nEXMMnqa8dPsHupnjPOWZrh-D6W1JxIrDC3LSuyHhy-N7Rr59-ri5uq5uvn7-crW-qbzQKleuRwO1QqlF46RokdV17wFN61SNKFXtpW6NMKruwYDRmrVStkI32mjDlTgj5_e5uzj_WDBlO4bkcRjchPOSrOZacaXlf6HU0jDJdIGvj3BpR-zsLobRxb19uG0Bb47ApbJtH93kQ3p0tTAl5hB0ee-w7F9OHG3yASePXYjos-3mYBnYQ-v2rnV7qNQCt3etWyH-ApwDnYM</recordid><startdate>20021201</startdate><enddate>20021201</enddate><creator>Kooiman, C.G</creator><creator>Spinhoven, P</creator><creator>Trijsburg, R.W</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7QJ</scope><scope>7X8</scope></search><sort><creationdate>20021201</creationdate><title>The assessment of alexithymia: A critical review of the literature and a psychometric study of the Toronto Alexithymia Scale-20</title><author>Kooiman, C.G ; Spinhoven, P ; Trijsburg, R.W</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c376t-afe8046e5739a53be144fc0e8ba64ee564c57b83864f0808771b55b3797878263</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Affective symptoms</topic><topic>Affective Symptoms - classification</topic><topic>Affective Symptoms - diagnosis</topic><topic>Affective Symptoms - psychology</topic><topic>Alexithymia</topic><topic>Assessment</topic><topic>Biological and medical sciences</topic><topic>Diagnosis, Differential</topic><topic>Female</topic><topic>Humans</topic><topic>Literature reviews</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Personality tests</topic><topic>Psychiatric Status Rating Scales</topic><topic>Psychology</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychometric properties</topic><topic>Psychometrics</topic><topic>Psychometrics. Diagnostic aid systems</topic><topic>Psychopathology. Psychiatry</topic><topic>Sensitivity and Specificity</topic><topic>Techniques and methods</topic><topic>Toronto Alexithymia Scale</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kooiman, C.G</creatorcontrib><creatorcontrib>Spinhoven, P</creatorcontrib><creatorcontrib>Trijsburg, R.W</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>Applied Social Sciences Index & Abstracts (ASSIA)</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of psychosomatic research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kooiman, C.G</au><au>Spinhoven, P</au><au>Trijsburg, R.W</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The assessment of alexithymia: A critical review of the literature and a psychometric study of the Toronto Alexithymia Scale-20</atitle><jtitle>Journal of psychosomatic research</jtitle><addtitle>J Psychosom Res</addtitle><date>2002-12-01</date><risdate>2002</risdate><volume>53</volume><issue>6</issue><spage>1083</spage><epage>1090</epage><pages>1083-1090</pages><issn>0022-3999</issn><eissn>1879-1360</eissn><coden>JPCRAT</coden><abstract>Objective: The objectives were to give an overview of studies on the validity of the Toronto Alexithymia Scale (TAS-20) and to present data regarding the validity of the TAS-20.
Methods: The literature on the psychometric properties of the TAS-20 was reviewed and a study was conducted of its psychometric properties in a sample of students and a sample of psychiatric outpatients using a statistical method allowing identification of a stable factor structure.
Results: The review revealed that the majority of studies on the TAS-20 were conducted with nonpatient samples. The factorial validity and reliability of the dimensions ‘identifying feelings’ (DIF) and ‘describing feelings’ (DDF) could be replicated in many of these studies. However, in practically all studies the dimension ‘externally oriented thinking’ (EOT) appears to be unreliable. In addition, the presupposed fantasy aspect of the alexithymia construct is not included in the TAS-20. Although many studies were conducted on the construct validity of the TAS-20, no studies have been published on its criterion validity. Some studies show a different factor structure to exist in patient samples. This was confirmed in our own study in which the dimensions ‘identifying feelings’ and ‘describing feelings’ collapsed into one single subscale. As in other studies, the reliability of the dimension ‘EOT’ was low.
Conclusion: The TAS-20 has some important shortcomings with respect to validity and reliability. For the assessment of alexithymia in empirical research, it is recommended to use the TAS-20 in combination with other instruments. We do not recommend the TAS-20 to be used in clinical practice.</abstract><cop>Amsterdam</cop><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>12479990</pmid><doi>10.1016/S0022-3999(02)00348-3</doi><tpages>8</tpages></addata></record> |
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| subjects | Affective symptoms Affective Symptoms - classification Affective Symptoms - diagnosis Affective Symptoms - psychology Alexithymia Assessment Biological and medical sciences Diagnosis, Differential Female Humans Literature reviews Male Medical sciences Personality tests Psychiatric Status Rating Scales Psychology Psychology. Psychoanalysis. Psychiatry Psychometric properties Psychometrics Psychometrics. Diagnostic aid systems Psychopathology. Psychiatry Sensitivity and Specificity Techniques and methods Toronto Alexithymia Scale |
| title | The assessment of alexithymia: A critical review of the literature and a psychometric study of the Toronto Alexithymia Scale-20 |
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