The prevalence of alexithymia and its relationship with Youth Self-Report problem scales among Finnish adolescents

This study investigated the relationship between alexithymia, depressive symptoms, and Youth Self-Report (YSR) self-image profiles among 13 to 18-year-old adolescents (n = 7087) attending school in Kuopio, Finland. The final sample consisted of 3936 adolescents (1801 boys, 2135 girls) who completed structured self-rating questionnaires (Toronto Alexithymia Scale [TAS] 20, Beck Depression Inventory [BDI], and YSR) during class periods at school. The overall prevalence of alexithymia was 7.3%. However, girls in all age groups were more frequently alexithymic than boys. Regardless of sex, alexithymic youths reported more depressive symptoms as well as internalizing and externalizing problems than the others. A YSR total score of more than 70 was recorded among 33.4% of alexithymic compared with 3.7% of nonalexithymic adolescents. The TAS-20 correlated significantly with the BDI score, YSR total score, and with internalizing problems. This study revealed alexithymia among adolescents to be associated with various complications such as depressive symptoms, high scores in YSR problem scales, and difficulties in social relationships. Our findings indicate that these adolescents are at high risk of mental disorders and require treatment interventions.     

The effect of alexithymic features on response to antidepressant medication in patients with major depression

There has been no follow-up study regarding the effect of alexithymic features on antidepressant treatment. This study was planned to observe whether alexithymia effects short-term treatment outcome in depression. The study included 32 alexithymic and 33 nonalexithymic outpatients with major depression. Depression was assessed on the basis of the Structured Clinical Interview for DSM-IV (SCID-I). Level of depression was measured using the 17-item Hamilton Rating Scale for Depression (HAM-D). Alexithymia was screened using the Turkish version of Toronto Alexithymia Scale (TAS-20). All patients received 20 mg/d paroxetine for 10 weeks. Alexithymic and nonalexithymic patients were compared on the HAM-D scores, TAS-20 scores, and rate of response to antidepressant medication. The rate of responders, defined by a reduction of >50% from baseline in HAM-D total score, was 21.9% in the alexithymic group and 54.5% in the nonalexithymic group. Changes in the HAM-D scores were significantly correlated with the TAS-20 scores. TAS-20 scores dropped below 61 in only 31.2% of the alexithymic patients, and 68.8% of patients remained alexithymic. Whereas 50% of patients whose TAS-20 scores dropped below 61 responded to antidepressant medication, this rate was only 9.1% among patients who remained alexithymic. These findings indicated that the stability of alexithymic features had a negative effect on antidepressant treatment in depression.     

Alexithymia in adolescents with borderline personality disorder

ObjectiveThe aim of this study was to explore the relationship between alexithymia and borderline personality disorder (BPD) in adolescents.MethodsThe study investigated a sample of 59 consulting or inpatient adolescents with a well-established diagnosis of BPD (SIDP-IV) and a control sample of healthy adolescents individually matched by gender, age and socio-economic status. Alexithymia, depression and trait-anxiety were rated using the Twenty-item Toronto Alexithymia Scale (TAS-20), the Beck Depression Inventory (BDI-II) and the trait-anxiety subscale from the State-Trait Anxiety Inventory (STAI-T), respectively. A confirmatory factorial analysis (CFA) was performed to test the fit of the three-factor structure of the TAS-20 in the adolescent sample (N = 140). BPD and control groups were compared on alexithymic scores using ANCOVA analyses controlling for the potential confounding effects of depression and anxiety.ResultsThe ratio of the chi-square to its degrees of freedom, the goodness-of-fit index, the adjusted goodness-of-fit index and Steiger's root-mean-square error of approximation had satisfactory values of 1.54; 0.87; 0.83 and 0.058, respectively. The two ANCOVA demonstrated no significant difference for TAS-20 scores. BPD subjects were more alexithymic than healthy subjects but this difference was mainly explained by the levels of depression or anxiety.LimitationsSince BPD subjects have high comorbidity with depression or anxiety, longitudinal studies examining the absolute and relative stability of TAS-20 scores are necessary to determine whether alexithymia constitutes a state or a trait in BPD.ConclusionsBPD adolescents are characterized by alexithymia, probably of a secondary or state-dependent nature.     

Transcallosal inhibition in patients with and without alexithymia

OBJECTIVE: Previous results indicated a facilitated transcallosal inhibition via the corpus callosum (CC) in alexithymic male students. This study investigates transcallosal inhibition in alexithymic and nonalexithymic psychiatric inpatients. METHOD: Transcallosal inhibition was elicited by means of transcranial magnetic stimulation (TMS) of the primary motor cortex. Seven right-handed male and 12 female psychiatric patients with Toronto Alexithymia Scale (TAS-20) scores of > or = 61 and 12 patients with TAS-20 scores of < 51 were investigated. The transcallosal conduction time (TCT) reflects the TMS-induced inhibitory cortical activity that is mediated via the CC. RESULTS: There was a significant effect of alexithymia on TCT (Wilks lambda = 0.76; F = 4.1; d.f. = 2, 26; p = 0.027) indicating that alexithymic patients had shorter bidirectional TCTs than nonalexithymic patients. The in-between models showed a significant impact of alexithymia on both right to left TCT (F = 4.8; d.f. = 1; p = 0.038) and left to right TCT (F = 5.0; d.f. = 1; p = 0.033). Neither gender nor scores of depression (Montgomery-Asberg Depression Rating Scale) had any significant effects on TCT. CONCLUSION: Our results confirm and extend the previous findings of a facilitated, bidirectional transcallosal inhibition in alexithymia to male and female psychiatric inpatients. Facilitated transcallosal inhibition should be considered as a neurobiological correlate of alexithymia.     

Alexithymia and Self-Esteem in a Sample of Opioid Dependent Males: a Controlled Study

The aim of this study was to evaluate the prevalence of alexithymia in opioid dependents compared to the controls and to examine the relationship between alexithymia and depression, anxiety, and self-esteem in opioid dependents. Fifty male heroin-dependent outpatients who completed the detoxification process according to DSM-IV TR diagnostic criteria and 50 control subjects matched for age, gender, and education status who do not abuse heroin or any other substances were included in the study. Subjects were interviewed by using the Structured Clinical Interview for DSM-IV (SCID-I). Variables of interest were assessed according to Toronto Alexithymia Scale-20 (TAS-20), Rosenberg Self-Esteem Scale (RSES), Beck Depression Inventory (BDI), and Beck Anxiety Inventory (BAI). Forty-two percent of the opioid dependents were estimated as alexithymic according to the cut-off scores of TAS-20 (> 61), while this ratio was 10% for the control group. The mean TAS-20 score in the dependent group was significantly higher than in the control group. BDI, BAI, and RSES scores were also found to be significantly higher in the dependent group, particularly in the alexithymic opioid dependent group. There were significant positive correlations between TAS-20 and BDI, BAI, and RSES scores. Further studies are needed to understand the negative effects of alexithymia and lower self-esteem on opioid dependence.

     

The TAS-20 more likely measures negative affects rather than alexithymia itself in patients with major depression,panic disorder,eating disorders and substance use disorders

Background

This study evaluates whether the difference in Toronto Alexithymia Scale-20 item (TAS-20) between patients with major depression (MD), panic disorder (PD), eating disorders (ED), and substance use disorders (SUD) and healthy controls persisted after controlling for the severity of anxiety and depression.

Methods

Thirty-eight patients with MD, 58 with PD, 52 with ED, and 30 with SUD and 78 healthy controls (C) completed the TAS-20, the Hamilton Rating Scale for Anxiety (Ham-A), the Hamilton Rating Scale for Depression (Ham-D).

Results

The differences in TAS-20 scores observed between patient groups, regardless of the type of their disorders, and controls disappeared after controlling for the effect of anxiety and depression severity. In contrast, the differences in severity of anxiety and depression between patients and controls were still present, after excluding the effect of alexithymic levels.

Conclusions

Our data suggest that alexithymic levels, as measured by the TAS-20, are modulated by the severity of symptoms, supporting the view that alexithymia can represent a state phenomenon in patients with MD, PD, ED and SUD, because the TAS-20 seems overly sensitive to a general distress syndrome, and it is more likely to measure negative affects rather than alexithymia itself.     

A Comparative Study on Alexithymia in Depressive,Somatoform, Anxiety,and Psychotic Disorders among Koreans

Objective

Little is known about the characteristic differences in alexithymic construct in various psychiatric disorders because of a paucity of direct comparisons between psychiatric disorders. Therefore, this study explored disorder-related differences in alexithymic characteristics among Korean patients diagnosed with four major psychiatric disorders (n=388).

Methods

Alexithymic tendencies, as measured by the Korean version of the 20-item Toronto Alexithymia Scale (TAS-20K), of patients classified into four groups according to major psychiatric diagnosis were compared. The groups consisted of patients with depressive disorders (DP; n=125), somatoform disorders (SM; n=78), anxiety disorders (AX; n=117), and psychotic disorders (PS; n=68).

Results

We found that substantial portions of patients in all groups were classified as having alexithymia and no statistical intergroup differences emerged (42.4%, 35.9%, 35.3%, and 33.3% for DP, SM, PS, and AX). However, patients with DP obtained higher scores in factor 2 (difficulties describing feelings) than those with SM or AX, after adjusting for demographic variables.

Conclusion

These findings suggest that alexithymia might be associated with a higher vulnerability to depressive disorders and factor 2 of TAS-20K could be a discriminating feature of depressive disorders.     

Alexithymia and temperament and character model of personality in patients with major depressive disorder

Alexithymia is thought to be a stable personality trait and a predisposing risk factor for depression. In this study, we aimed to identify the prevalence of alexithymia in a depressed and nondepressed sample and examined the relationship between Cloninger's psychobiological model of personality with alexithymia. The Turkish version of the 20-item Toronto Alexithymia Scale (TAS-20), the Turkish version of the Temperament and Character Inventory, and the 21-item Beck Depression Inventory (BDI) were administered to 81 depressed patients and 51 controls. The mean age of the groups was 30.5 ± 7.7 and 32.75 ± 8.73, respectively. Depression severity was evaluated with the BDI. In the depressed group, 33.3% were alexithymic, and alexithymic subjects had significantly higher BDI scores. Depressed individuals were significantly more alexithymic than the controls on the total and all the 3 subscales of TAS-20. The TAS-20 total score was negatively correlated with the temperament dimension of Reward Dependence (RD) and the character dimension of Self-Directedness (SD). In the TAS-20 subscale, difficulties in identifying feelings was positively correlated with Self-Transcendence and negatively correlated with SD. The difficulties in expressing feelings subscale was negatively correlated with RD and SD. In the depressed patient group, the temperament dimension of RD was significantly lower in the alexithymic group. The rate of alexithymia is found high among this sample of Turkish depressed patients, and the results suggested a strong connection between alexithymia and depression. Alexithymia is explained by specific dimensions and subscale within Cloninger's psychobiological model of personality in this sample of depressed Turkish patients.     

Validity of the BVAQ: a study in eating disorder patients and controls

Alexithymia core features are the difficulties in identifying and describing feelings; the difficulties in distinguishing feelings from the bodily sensations of emotional arousal; an impaired symbolization, as evidenced by a paucity of fantasies and other imaginative activity; and a tendency to focus on external events rather than inner experience. Several measures of alexithymia have been developed, including interviewer-rated questionnaires and self-report questionnaires. Among the self-report questionnaires, the 20-item Toronto Alexithymia scale (TAS-20) is the most commonly used, but it fails to measure all the core features of alexithymia. A recently developed instrument, the Bermond-Vorst Alexithymia Questionnaire (BVAQ), allows the measurement of the alexithymia core features, as well as an additional one. It appeared to present good psychometric properties, notably the abbreviated BVAQ-form B. The results of recent studies comparing the psychometric properties of the TAS-20 and the BVAQ have recommended the BVAQ over the TAS-20. However, this questionnaire needed further validation. OBJECTIVES: Thus, the aim of the present study was to determine the convergent, discriminant and concurrent validity of the Bermond-Vorst Alexithymia Questionnaire -- form B (BVAQ-B) in a clinical sample of 59 eating disorder patients, as well as in 191 controls. The TAS-20 constituted the gold standard for the assessment of the BVAQ-B' convergent validity. To compare the concurrent validity of the BVAQ-B and the TAS-20, participants also completed several self-reports investigating different dimensions of emotion regulation capacities: the 13-item Beck Depression Inventory (BDI), the Spielberger State and Trait Anxiety Inventory (STAI-form Y), as well as the Chapman and Chapman Physical and Social Anhedonia Scales (PAS and SAS). One way analyses of variance were used for mean scores comparisons. Convergent validity was determined using Pearson coefficients of correlation. RESULTS: Results of the analyses suggested the BVAQ-B has a satisfying convergent and discriminant validity. This was observed in both the clinical and control samples. Moreover, the comparison of the convergent validity of the BVAQ-B and the TAS-20 revealed several differences between these two alexithymia self-report questionnaires. The BVAQ-B appeared less sensitive to the subjective emotional state of the participants than the TAS-20. Whereas it was argued the TAS-20 overlaps with other emotional state scores, the BVAQ-B would allow to measure alexithymia more specifically. In addition, the present results allowed to further determine the relations between alexithymia and other dimensions of emotion regulation capacities. The analyses confirmed that alexithymia is linked to other emotion regulation dimensions such as depression and anxiety. Moreover, alexithymia was associated with physical and social anhedonia, two dimensions that received less interest in the alexithymia literature to date. This study also showed that control and clinical sample have different emotion regulation capacities. Eating disorder patients were not only more alexithymic and more depressed, but also more anxious and more anhedonic than the controls. Finally, this study revealed that alexithymia differs whether the alexithymic individuals are patients or controls. Healthy alexithymic individuals (ie, individuals categorized as alexithymic in the control group) seemed characterised by a selective deficit of emotional cognition, with sparing of emotional experience (Bermond's type II alexithymia). Alexithymics individuals of the eating -disorder group seemed particularly unabled to experience affect. This pattern could correspond to Bermond's type I alexithymia, which is characterised by the absence of emotional experience and, consequently, by the absence of the cognition accompanying the emotion. In summary, results of the present study add to the literature debating on whether alexithymia is similar in different types of population.     

The role of alexithymia in predicting incident depression in patients at first acute coronary syndrome

ObjectiveAlexithymia has been considered both to predispose to depression and to worsen cardiac prognosis after an acute coronary syndrome. Nonetheless, no studies have evaluated its role as a risk factor for incident depression, in patients with acute coronary syndrome.MethodsIn 251 consecutive patients, the presence of a first-ever depressive episode was evaluated with the Primary Care Evaluation of Mental Disorders at baseline and 1, 2, 4, 6, 9, 12 and 24 months after their first acute coronary syndrome. At baseline, patients completed the Toronto Alexithymia Scale (TAS-20) and the Hospital Anxiety and Depression Scale.ResultsOut of 251 subjects (80.9% males), a first-ever depressive episode was diagnosed in 66 patients. Depressed and never-depressed patients differed in female gender, living status, alexithymic scores at TAS-20 and depressive symptoms. Nonetheless, nor the TAS-20 factors nor its total score were predictive of developing a depressive episode in a Cox regression. Moreover, baseline differences in TAS-20 scores between the two groups, disappeared after controlling for anhedonic symptoms.ConclusionOur results do not support the hypothesis that alexithymia at TAS-20 is a risk factor for incident depression after acute coronary syndrome.     

Does alexithymia differentiate between patients with nonepileptic seizures, patients with epilepsy, and nonpatient controls?

Considering the evidence of an association between alexithymia and somatization, this study aimed to discover whether alexithymia could distinguish patients with psychogenic nonepileptic seizures (NES) from those with epilepsy (ES) and nonpatient controls (C). Toronto Alexithymia Scale (TAS-20) scores were obtained from 21 matched participants from each of these groups, together with measures of anxiety and depression. Overall TAS-20 scores did not differentiate the three groups after controlling for anxiety and depression, but scores on certain subscales of the TAS-20 differed significantly between the patient groups and the controls. Although alexithymia could not discriminate individuals with NES from those with organic manifestations, whether the etiology of alexithymia may differ according to patient group was discussed. Given that 90.5% of NES patients were identified as alexithymic, treatment approaches used for individuals with alexithymia may be usefully applied to those with NES.     

Alexithymia and depression: A 1-year follow-up study in outpatients with major depression

Objective: To examine the changes in alexithymic features and depressive and other psychological distress symptoms during a 1-year follow-up among patients with major depression. Methods: The study population comprised 120 outpatients suffering from major depression. Diagnosis was made with Structured Clinical Interview (SCID-I) for DSM-III-R. The severity of depression was evaluated with the 17-item Hamilton Rating Scale for Depression (HAM-D), and self-reported depression with the Beck Depression Inventory (BDI-21). Alexithymic features were assessed with the Twenty-Item Toronto Alexithymia Scale (TAS-20). Self-reported psychological distress symptoms were evaluated with the Brief Symptom Inventory (BSI). Results: Measures of depression and distress were significantly lower at the follow-up than at the baseline, while the total TAS-20 scores did not change significantly during the follow-up. A closer examination revealed that various TAS-20 factors behaved differently. Changes in Factors 1 and 2 were associated with changes in mood, whereas those in Factor 3 were not. Additionally, recovery from depression was associated with decrease in alexithymic features. Conclusion: Difficulties in identifying and in describing feelings are associated with changes in mood, while externally oriented thinking is not.     

Alexithymia in adolescents with chronic fatigue syndrome

BACKGROUND: Alexithymia is postulated as an important factor in the development of medically unexplained physical symptoms. Chronic fatigue syndrome (CFS) is presently medically unexplained. The aim of this study was to investigate whether the prevalence of alexithymia was higher in adolescents with CFS compared to healthy adolescents. Comorbidity such as anxiety and depression were analyzed as possible confounding factors. Secondly, alexithymia was investigated as a prognostic factor for the recovery of CFS. METHODS: A cross-sectional study was performed among 40 adolescent outpatients diagnosed with CFS and 36 healthy controls. The 20-item Toronto Alexithymia Scale was used to assess all participants for alexithymia. Additionally, all participants completed a number of questionnaires regarding fatigue (Checklist Individual Strength), somatic complaints (Checklist Somatization Inventory), depression (Children's Depression Inventory), and trait anxiety (Spielberger State Trait Anxiety Questionnaire). A follow-up study was performed among the CFS adolescents 1 1/2 years after the initial assessment. RESULTS: CFS adolescents scored higher only on the subscale identifying feelings of the TAS-20 [mean difference after adjustment for depression and anxiety 2.8 (95% CI: 0.6; 4.9]. Twelve CFS adolescents (30%) fulfilled criteria for alexithymia. This subgroup was characterized by higher scores for depression and anxiety and equal scores for fatigue and somatic complaints. At follow-up, no differences in recovery were established between the alexithymic and nonalexithymic CFS adolescents. CONCLUSIONS: Alexithymia neither appears to be a unique correlate of CFS nor to be a prognostic factor for recovery of the CFS illness.     

Affect regulation in alexithymia: an ethological study of displacement behavior during psychiatric interviews

Displacement activities (i.e., self-directed behaviors such as self-touching, scratching, and self-grooming) are a reliable ethological indicator of increased emotional and physiological arousal throughout the phylogenetic scale. We hypothesized that, in alexithymic individuals, the failure to regulate cognitively distressing emotions might result in increased displacement behavior. The nonverbal behavior of 30 patients with depressive or anxiety disorders was video-recorded during psychiatric interviews and analyzed using an ethological scoring system. Before being interviewed, each patient completed the Twenty-Item Toronto Alexithymia Scale (TAS-20), the Beck Depression Inventory (BDI), and the state form of the State-Trait Anxiety Index (STAI-S). Ethological data confirmed the hypothesis of the study. The patients with more pronounced alexithymic features showed a significantly higher frequency of displacement activities during interviews. At the same time, these patients reported levels of self-rated anxiety and depression equivalent to those reported by nonalexithymic patients. Such a dissociation between cognitive appraisal of emotion and nonverbal behavior reflecting increased emotional arousal supports the view that alexithymia implies a failure to elevate emotions from a preconceptual level of organization to the conceptual level of mental representations.     

Alexithymia and Eating Disorder Symptoms in Adolescents

An increasing amount of evidence indicates an association between alexithymia and eating disorder symptoms. This possible association was evaluated in a non-clinical sample of late adolescents. Seven hundred and twenty nine adolescents completed the questionnaire and formed the final sample. Alexithymia was measured using the 20-item Toronto Alexithymia Scale and eating disorder symptoms were assessed using the SCOFF questionnaire. The rate of alexithymia was 8.2%, without any gender difference. The mean SCOFF scores differed significantly between alexithymic and non-alexithymic subjects, and the share of SCOFF positive subjects was significantly higher among alexithymics. The results suggest that eating disorder symptoms are more common in alexithymic adolescents.     

The performance of diagnostic measures of depression in alexithymic and nonalexithymic subjects

OBJECTIVE: The objective of this study was to examine how the outcomes of a structured diagnostic interview for depression are related to the results of a self-report scale in alexithymic and nonalexithymic groups. MATERIALS AND METHODS: Subjects (N=389) recruited from primary care and psychiatric care completed the Depression Scale (DEPS) and the 20-item Toronto Alexithymia Scale. Major depression was diagnosed using the Composite International Diagnostic Interview-Short-Form by telephone. RESULTS: In the group without major depression, the DEPS scores of the alexithymic subjects were significantly higher than those of the nonalexithymic subjects. In the group with major depression, the ideal cutoff points of the DEPS, assessed by receiver operating characteristic analyses, were essentially higher for the alexithymic patients. CONCLUSIONS: Alexithymic subjects without major depression may be rated as depressive if the only criterion is the score on a self-report scale. Furthermore, alexithymic patients may require higher cutoff points in a self-report depression scale.     

Self-reports on mental health problems of youth with moderate to borderline intellectual disabilities

OBJECTIVE: To determine the extent to which the Youth Self-Report (YSR) can be used to assess emotional and behavioral problems in adolescents with intellectual disabilities (IDs). METHOD: In 2003, 281 11- to 18-year-olds with IDs (IQ > or =48) completed the YSR in an interview, and in 1993, 1,047 non-ID adolescents completed the YSR themselves. Parents completed the Child Behavior Checklist (CBCL). The ID sample was split into lower (IQ 48-69) and higher (IQ > or =70) IQ groups. Cronbach's alpha values of the YSR scales and (intraclass) correlation coefficients between and within YSR and CBCL scale scores were calculated to determine parent-adolescent agreement and YSR construct validity, which were compared between samples. Mean YSR scale scores were compared between adolescents with ID with and without psychiatric symptoms. RESULTS: Cronbach's alpha, parent-adolescent agreement, and indications of construct validity were about similar in all samples, although discriminant validity was somewhat weaker in the lower IQ group. Mean scale scores were 1.5 to 2.0 times higher for ID adolescents with psychiatric symptoms. CONCLUSIONS: The YSR seems applicable in youth with an IQ > or =48. Further research is needed to refine and confirm these findings and the factor structure of the YSR in adolescents with ID and to differentiate between adolescents with moderate and mild IDs.     

Alexithymia in the German general population

The Toronto-Alexithymia-Scale (TAS-20) is used worldwide as a valid measurement of alexithymia. Until now, population-based standardization and cut-off values of the German TAS-20 version have not been available. This study provides these by means of a representative German sample and by investigating the factorial structure of the TAS-20. Data were generated from a representative random sample of the German general population (1,859 subjects aged between 20 and 69). The TAS-20 sum score was normally distributed. The mean value was 49.5 (SD = 9.3) in men and 48.2 (SD = 9.2) in women. Divorce, single and low social status were associated with enhanced sum scores. Ten percent of the population exceeded the TAS-20 sum score threshold of ≥61. The 66th percentile reached 53 for men and 52 for women. Factor analysis identified three factors that match the scales of the English original version. An additional fourth factor (“importance of emotional introspection”) was extracted. Total explanation of variance by these four factors was 52.27%. The sum score of the German TAS-20 version is suited for the standardized measure of alexithymia. For selecting alexithymic individuals in experimental studies, the cut-off ≥61 is possibly too restrictive. Therefore, we propose the 66th percentile for the identification of high alexithymics. The TAS-20 sum score is associated with important socio-demographic variables. The factorial structure is reliable; the fourth factor (“importance of emotional introspection”) provides differentiation of content and allows for enhanced explanation of variance.