Prevalence and Demographic Correlates of Alexithymia: A Comparison Between Australian Psychiatric and Community Samples

Alexithymia profiles and depression, anxiety, and stress

BACKGROUND

Alexithymia is a multidimensional trait comprised of difficulties identifying feelings, difficulties describing feelings, and externally orientated thinking. It is regarded as an important risk factor for emotional disorders, but there are presently limited data on each specific facet of alexithymia, or the extent to which deficits in processing negative emotions, positive emotions, or both, are important. In this study, we address these gaps by using the Perth Alexithymia Questionnaire (PAQ) to comprehensively examine the relationships between alexithymia and depression, anxiety, and stress symptoms.

METHODS

University students (N = 1250) completed the PAQ and the Depression Anxiety Stress Scales-21. Pearson correlations, hierarchical regressions, and latent profile analysis were conducted.

RESULTS

All facets of alexithymia, across both valence domains, were significantly correlated with depression, anxiety, and stress symptoms (r = 0.27-0.40). Regression analyses indicated that the alexithymia facets, together, could account for a significant 14.6 %-16.4 % of the variance in depression, anxiety, and stress. Difficulties identifying negative feelings and difficulties identifying positive feelings were the strongest unique predictors across all symptom categories. Our latent profile analysis extracted eight profiles, comprising different combinations of alexithymia facets and psychopathology symptoms, collectively highlighting the transdiagnostic relevance of alexithymia facets.

LIMITATIONS

Our study involved a student sample, and further work in clinical samples will be beneficial.

CONCLUSIONS

Our data indicate that all facets of alexithymia, across both valence domains, are relevant for understanding depression, anxiety, and stress. These findings demonstrate the value of facet-level and valence-specific alexithymia assessments, informing more comprehensive understanding and more targeted treatments of emotional disorder symptoms.

Are dietary pattern associated with alexithymia in Saudi adults?

BACKGROUND

Alexithymia is characterized by difficulties in describing feelings and physical sensations. Few studies have shown that there is a relation between alexithymia and dietary habits.

OBJECTIVES

To determine the prevalence of alexithymia and its association with dietary patterns among a sample of communities in the Eastern Region of the Kingdom of Saudi Arabia.

MATERIALS AND METHODS

A cross-sectional study was conducted using a sample of 247 participants, were selected using convenience sampling. A well-organized and valid online questionnaire was administered, which covered variables related to socio-demographic data, anthropometric measurements, dietary patterns, and the Toronto Alexithymia Scale (TAS).

RESULTS

The prevalence of Alexithymia was found as 39.3%. Moreover, among the alexithymia and possible alexithymia groups, the majority eat pasta 1-4 times per week (70% and 67% respectively). Alexithemic participants eat fewer vegetables and fruits 46%), while the remaining eat more (70%), p = .001. Only 34% of the cases eat breakfast regularly (p = .005). Furthermore, the cases drink soft drinks and juices at meals more than controls in this study (p = .025).

CONCLUSION

The present study provides further experimental evidence which supports existing literature that indicating the strong association between alexithymia and unhealthy dietary patterns. Also, Alexithymia prevalence in our study is (39.3%) ; because of the cultural impact of the Saudi environment due to the fact that the face of Saudi women is not revealed, and because the face is one of the main sources of expression of feelings, which makes females unable to express or read feelings well.

Art Therapy as a Nursing Intervention for Individuals With Schizophrenia

The aim of the current study was to determine the effects of group art therapy on clinical symptoms, alexithymia, and quality of life among people with schizophrenia. This single-blinded, randomized controlled trial was performed with 66 individuals with schizophrenia from a community mental health center in western Turkey between September 2021 and February 2022. Following art therapy, the intervention group had lower severity of positive, negative, and general psycho-pathology symptoms; lower levels of alexithymia; and higher levels of psychological health, social relationships, and total quality of life than the control group; and the difference between groups was statistically significant (p < 0.05). Results reveal that art therapy combined with pharmacological therapy contributes to good clinical outcomes among individuals with schizophrenia. This evidence can guide psychiatric nurses to use art therapy to reduce psychopathology severity and increase functionality and quality of life among individuals with schizophrenia. [Journal of Psychosocial Nursing and Mental Health Services, 62(5), 29-38.].

Alexithymia or general psychological distress? Discriminant validity of the Toronto Alexithymia Scale and the Perth Alexithymia Questionnaire

BACKGROUND

Alexithymia is an important transdiagnostic risk factor for emotion-based psychopathologies. However, it remains unclear whether alexithymia questionnaires actually measure alexithymia, or whether they measure emotional distress. Our aim here was to address this discriminant validity concern via exploratory factor analysis (EFA) of the 20-item Toronto Alexithymia Scale (TAS-20) and the Perth Alexithymia Questionnaire (PAQ).

METHOD

United States general community adults (N = 508) completed the TAS-20, PAQ, and the Depression Anxiety Stress Scales-21 (DASS-21). EFA was used to examine the latent dimensions underlying these measures' scores.

RESULTS

Our EFA extracted two higher-order factors, an "alexithymia" factor and a "general distress" factor (i.e., depression, anxiety, stress). All PAQ scores loaded cleanly on the alexithymia factor, with no cross-loadings on the distress factor. However, for the TAS-20, Difficulty Identifying Feelings (DIF) facet scores cross-loaded highly on the distress factor.

LIMITATIONS

Our sample consisted of general community adults; future work in clinical settings will be useful.

CONCLUSIONS

Our data indicate that the PAQ has good discriminant validity. However, the TAS-20 appears to have significant discriminant validity problems, in that much of the variance in its DIF facet reflects people's current levels of distress, rather than alexithymia. The TAS-20, which has traditionally been the most widely used alexithymia questionnaire, may therefore not be the optimal alexithymia tool. Our findings add to the body of evidence supporting the validity and utility of the PAQ and suggest that, moving forward, it is a superior option to the TAS-20 for alexithymia assessments.

Alexithymia and aspects of dreaming: Differential associations of alexithymia facets with dream variables

Research on aspects of dreaming associated with alexithymia has yielded mixed results. The present study recruited a young adult online sample of 577 participants who completed validated indices of alexithymia, emotion suppression, negative moods, and eight aspects of dreaming, with a focus on evaluating a counterintuitive previous finding that alexithymia and two of its core facets were associated with greater self-reported typical emotional intensity of dreams. Total alexithymia and facet scores showed differential relationships to aspects of dreaming including dream recall frequency, emotionality, meaningfulness, nightmare frequency, nightmare distress, usefulness of dreams in problem-solving and creativity, and learning about oneself through dreams. Planned hierarchical regression controlling for demographics, alcohol use, and dream recall frequency indicated that the difficulties identifying feelings (DIF) facet of alexithymia was a significant positive predictor of dream emotionality, whereas the externally oriented thinking (EOT) facet was a significant negative predictor. Stress, but not emotion suppression, mediated the positive relationship between DIF and dream emotionality. The likely role of dream emotionality in higher ratings of nightmare distress, dream meaningfulness, and learning about oneself through dreams among those with higher DIF scores is noted, along with other findings and the strengths and limitations of the study.

Alexithymia is associated with insomnia in Chinese patients with schizophrenia

Background

Sleep disorders are prevalent among patients with schizophrenia and are associated with several negative consequences. Although, researchers have recently suggested that sleep disorders have a close correlation with alexithymia, and schizophrenia also has a strong correlation with alexithymia, there have been few studies on the relationships between schizophrenia, sleep disorders and alexithymia. Therefore, this study aimed to explore the relationships between psychiatric symptoms, alexithymia and sleep problems in patients with schizophrenia so as to provide a reference for the clinical treatment of this comorbidity.

Methods

In total, 977 patients with schizophrenia were recruited for this study. The Insomnia Severity Index (ISI) was used to assess sleep disorders, and the Positive and Negative Syndrome Scale (PANSS), Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) and Toronto Alexithymia Scale (TAS) were used to evaluate clinical symptoms, cognitive functions and the ability to express emotion, respectively.

Results

The results indicated that the PANSS subscales (G-subscore) and TAS group were risk factors for insomnia in schizophrenia patients (all p < 0.05). The mediation model showed the standardized path coefficients from schizophrenia to alexithymia (β = 0.104, p < 0.001) and from alexithymia to insomnia (β = 0.038, p < 0.001) were statistically significant.

Conclusion

The results of this study indicated that alexithymia is associated with sleep disturbance in patients with schizophrenia. These findings may provide a new avenue for the treatment of schizophrenia patients with sleep disorders.

Alexithymia in Adult Autism Clinic Service-Users: Relationships with Sensory Processing Differences and Mental Health

Mental health difficulties commonly co-occur with autism, especially in autistic people accessing clinic services, impacting substantially on quality-of-life. Alexithymia (difficulty describing/identifying feelings) and sensory processing differences are prevalent traits in autism that have been associated with depression/anxiety in autistic community samples. However, it is important to better understand interrelationships between these traits in clinical populations to improve identification of service-user needs. In this study, 190 autistic adults (65.3% male), seen in a tertiary autism clinic, completed self-report measures of alexithymia (20-item Toronto Alexithymia Scale), sensory processing differences (Adolescent/Adult Sensory Profile) and depression/anxiety (Hospital Anxiety and Depression Scale). Multiple linear regression models and mediation analyses were used to examine associations between alexithymia, sensory processing differences, and depression/anxiety severity. Across the sample, 66.3% of individuals (N = 126) were classified as alexithymic (score ≥ 61). Total alexithymia and difficulty describing/identifying feelings were significantly associated with depression severity (β = 0.30-0.38, highest p < 0.002), and difficulty identifying feelings was significantly associated with anxiety severity (β = 0.36, p < 0.001). Sensory processing differences were also significantly associated with depression severity (β = 0.29, p = 0.002) and anxiety severity across all models (β = 0.34-0.48, highest p < 0.001) Finally, difficulty describing/identifying feelings partially mediated the relationships between sensory processing differences and both depression/anxiety severity. Overall, these results highlight that interventions adapted for and targeting emotional awareness and sensory-related uncertainty may improve mental health outcomes in autistic service-users.

Alexithymia in Chinese patients with chronic schizophrenia: Prevalence, clinical correlates, and relationship with neurocognition and empathy

INTRODUCTION

Alexithymia is highly prevalent and strongly related to adverse consequences in patients with schizophrenia. However, its associated factors remain largely unexplored. The present study aimed to determine the prevalence of alexithymia and its association with sociocultural characteristics, clinical symptoms, neurocognition, and empathy in 854 Chinese patients with schizophrenia.

METHOD

Demographic information was collected through a self-designed questionnaire. Alexithymia was assessed by the Toronto Alexithymia Scale (TAS-20). We assessed clinical symptoms, neurocognition, and empathy via the following instruments: Positive and Negative Syndrome Scale, Repeatable Battery for the Assessment of Neuropsychological Status, and Interpersonal Reactivity Index. A multiple logistic regression model was conducted to determine the independent correlates of alexithymia.

RESULTS

Approximately one-third (n = 277, 32%) of patients with schizophrenia had alexithymia. Patients with alexithymia had significantly more severe negative symptoms, neurocognition, and empathy impairment than patients without alexithymia. Being male, negative symptoms, personal distress, empathic concern, and language functioning were independently associated with alexithymia.

DISCUSSION

Our findings demonstrate a high prevalence of alexithymia and its strong association with clinical symptoms, neurocognition, and empathy, which calls for timely screening and intervention for alexithymia in patients with schizophrenia. Targeting impaired language function, negative symptoms, and impaired affective empathy might help reduce alexithymia and its related negative consequences.

Alexithymia in chronic schizophrenia and its mediating effect between cognitive deficits and negative symptoms

BACKGROUND

Although cognition is known to impact clinical symptoms of schizophrenia, few studies investigate the potential mediators of this relationship. This study aimed to examine the relationship between cognitive deficits and negative symptoms in schizophrenia, considering the mediating role of alexithymia as an important psychological variable. Moreover, the prevalence of alexithymia in patients with schizophrenia was investigated.

METHODS

A total of 689 patients with schizophrenia were recruited from two psychiatric hospitals. All patients completed the Positive and Negative Syndrome Scale (PANSS), 20-item Toronto Alexithymia Scale (TAS-20), and the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). We used structural equation modeling to examine the hypothesized mediated model.

RESULTS

In total, 31.5 % of patients with schizophrenia were classified as alexithymia. The path analyses showed that two factors of alexithymia (i.e., the difficulty in identifying feelings and difficulty in describing feelings), played a mediating role in the pathway from cognitive deficits to negative symptoms (all p < .001).

LIMITATIONS

Self-reported measurement for alexithymia may not be sufficiently reliable due to response bias.

CONCLUSION

Our findings demonstrated a high occurrence of alexithymia in patients with schizophrenia. Moreover, the mediating role of alexithymia suggests that targeting emotion processing and cognition may be a feasible way to mitigate negative symptoms.

Effects of Alexithymia on Moral Decision-Making in Sacrificial Dilemmas: High Alexithymia is Associated with Weaker Sensitivity to Moral Norms

Purpose

Although several studies have investigated the association between alexithymia and moral decision-making in sacrificial dilemmas, the evidence remains mixed. The current work investigated this association and how alexithymia affects moral choice in such dilemmas.

Methods

The current research used a multinomial model (ie, CNI model) to disentangle (a) sensitivity to consequences, (b) sensitivity to moral norms, and (c) general preference for inaction versus action irrespective of consequences and norms in responses to moral dilemmas.

Results

Higher levels of alexithymia were associated with a greater preference for utilitarian judgments in sacrificial dilemmas (Study 1). Furthermore, individuals with high alexithymia showed significantly weaker sensitivity to moral norms than did those with low alexithymia, whereas there were no significant differences in sensitivity to consequences or a general preference for inaction versus action (Study 2).

Conclusion

The findings suggest that alexithymia affects moral choice in sacrificial dilemmas by blunting emotional reactions to causing harm, rather than through increased deliberative cost-benefit reasoning or general preference for inaction.

The Perth Alexithymia Questionnaire-Short Form (PAQ-S): A 6-item measure of alexithymia

BACKGROUND

Alexithymia is a trait characterized by difficulties identifying feelings, difficulties describing feelings, and externally orientated thinking. It is widely regarded as an important transdiagnostic risk factor for a range of psychopathologies, including depressive and anxiety disorders. Whilst several well-validated psychometric measures of alexithymia exist, these are relatively lengthy, thus limiting their utility in time-pressured settings. In this paper, we address this gap by introducing and validating a brief 6-item version of the Perth Alexithymia Questionnaire, called the Perth Alexithymia Questionnaire-Short Form (PAQ-S).

METHOD

Across two studies with adult samples (Study 1 N = 508 United States community; Study 2 = 378 Australian college students), we examined the psychometric properties of the PAQ-S in terms of its factor structure, reliability, and concurrent/criterion validity.

RESULTS

In exploratory and confirmatory factor analyses, all PAQ-S items loaded well on a single general alexithymia factor. The PAQ-S total score had high reliability, and correlated as expected with the long-form of the PAQ, as well as other established markers of alexithymia, emotion regulation, and affective disorder symptoms.

LIMITATIONS

Our samples were general community or college student samples from two Western countries; future validation work in clinical samples and more diverse cultural groups is thus needed.

CONCLUSIONS

The PAQ-S retains the psychometric strengths of the PAQ. As such, the PAQ-S can be used as a quick, robust measure of overall alexithymia levels. The introduction of the PAQ-S hence enables valid assessments of alexithymia in a more diverse range of settings and research designs.

Effects of DBT-based interventions on alexithymia: a systematic review

While dialectical behavior therapy (DBT) appears effective for some psychiatric conditions commonly associated with alexithymia, it is unclear whether DBT improves difficulties experienced by alexithymic individuals. This review investigated the current evidence on the effectiveness of DBT-based interventions in improving alexithymia. A qualitative synthesis of studies that investigated the efficacy of DBT on self-reported alexithymia was performed, identifying eligible studies using EBSCO/Essentials, Google Scholar, PubMed, Web of Science, and PsychINFO databases. Eight studies were identified. Overall, the results were inconclusive due to the heterogeneity of the studies but suggest that DBT-based interventions may be associated with self-reported decreases in alexithymia and increases in the ability to identify emotional states. The literature is limited by significant methodological problems, such as the low number of controlled trials, small samples, and high variability between DBT programs, which increases the risk of bias across study outcomes. More research is needed to reach conclusions regarding the effectiveness of DBT in improving alexithymia. Future studies should conduct randomized controlled trial designs (primarily with active treatment control conditions), greater standardization of DBT-based interventions, and a more in-depth examination of the level of participant involvement in long-term DBT-based interventions may help to understand whether DBT improves alexithymia difficulties.

Predicting depression and anxiety of Chinese population during COVID-19 in psychological evaluation data by XGBoost

BACKGROUND

Due to the onset of sudden stress, COVID-19 has greatly impacted the incidence of depression and anxiety. However, challenges still exist in identifying high-risk groups for depression and anxiety during COVID-19. Studies have identified how resilience and social support can be employed as effective predictors of depression and anxiety. This study aims to select the best combination of variables from measures of resilience, social support, and alexithymia for predicting depression and anxiety.

METHODS

The eXtreme Gradient Boosting (XGBoost¹) model was applied to a dataset including data on 29,841 participants that was collected during the COVID-19 pandemic. Discriminant analyses on groups of participants with depression (DE²), anxiety (AN³), comorbid depression and anxiety (DA⁴), and healthy controls (HC⁵), were performed. All variables were selected according to their importance for classification. Further, analyses were performed with selected features to determine the best variable combination.

RESULTS

The mean accuracies achieved by three classification tasks, DE vs HC, AN vs HC, and DA vs HC, were 0.78, 0.77, and 0.89. Further, the combination of 19 selected features almost exhibited the same performance as all 56 variables (accuracies = 0.75, 0.75, and 0.86).

CONCLUSIONS

Resilience, social support, and some demographic data can accurately distinguish DE, AN, and DA from HC. The results can be used to inform screening practices for depression and anxiety. Additionally, the model performance of a limited scale including only 19 features indicates that using a simplified scale is feasible.

A systematic review of the relationship between alexithymia and emotional eating in adults

Elucidating psychological characteristics associated with emotional eating may further inform interventions for this behaviour related to eating psychopathology. The present systematic review aimed to examine the relationship between alexithymia and self-reported emotional eating in adults, and provide a narrative synthesis of the existing literature. Using the PRISMA method for systematic reviews, six databases (MEDLINE, PsycInfo, PsycArticles, PubMed, SCOPUS, and Web of Science) were searched for peer-reviewed, quantitative research published between January 1994 and 20^th July 2021, when the searches were conducted. Eligible articles investigated the association between alexithymia, as measured by the Toronto Alexithymia Scale (Bagby, Parker, & Taylor, 1994), and emotional eating, as measured by any validated self-report instrument. Nine cross-sectional articles were reviewed, and risk of bias was assessed using the Appraisal Tool for Cross-Sectional Studies (Downes, Brennan, Williams, & Dean, 2016). A narrative synthesis of articles suggests positive associations between alexithymia and self-reported emotional eating. Five measures of emotional eating were used across articles, with limited but consistent evidence for the relationship between alexithymia and emotional eating as measured by the Dutch Eating Behaviour Questionnaire (Van strien et al., 1986). Further research is required to add evidence to the nature of the relationship between alexithymia and emotional eating, and to explore mechanisms that might underpin any relationships. Understanding the association between alexithymia and emotional eating may support strategies and interventions for those seeking help for emotional eating and related eating behaviours.

The percentage and clinical correlates of alexithymia in stable patients with schizophrenia

Alexithymia is a common, but less-recognized affective deficit in patients with schizophrenia. To date, no definitive conclusions have been drawn about the relationship between alexithymia and the clinical symptoms or their clinical correlates, particularly in stable patients with schizophrenia. The purpose of this study was to investigate the link between alexithymia and psychopathological symptoms, as well as any associated correlates, in stable patients with schizophrenia. A total of 435 Chinese patients with schizophrenia were recruited. The Positive and Negative Symptoms Scale (PANSS) was used to evaluate each patient's psychopathological symptoms. The Toronto Alexithymia Scale (TAS-20) was used to measure alexithymia. The percentage of alexithymia was 35.2% in stable patients with schizophrenia. Compared to non-alexithymia patients, patients with alexithymia had higher PANSS total scores, negative subscores, depressive subscores, and cognitive subscores (all p < 0.05). Multivariate regression analysis revealed that the following variables were positively associated with TAS-20 total scores: PANSS negative subscores (β = 0.274, t = 3.198, p = 0.001) and PANSS depressive subscores (β = 0.366, t = 2.500, p = 0.013). Education years (β = - 0.453, t = - 2.824, p = 0.005) was negatively associated with TAS-20 total scores. Our results suggest that the percentage of alexithymia was relatively higher in stable patients with schizophrenia. Education levels, negative symptoms, and depressive symptoms were independently associated with alexithymia in this specific population.

Alexithymia, reward sensitivity and excessive exercise in non-binge-eaters versus severe binge eaters: Implications for primary and secondary exercise dependence

A distinction has been made between primary and secondary exercise dependence, with the latter defined as excessive exercise secondary to disordered eating and weight concerns. Based on theoretical considerations from research on the roles of trait factors in addictions, the present study used validated scales to assess alexithymia, sensitivity to reward and punishment, emotion regulation and interoception in relation to exercise dependence symptoms in Australian male and female non-binge eaters (n = 228) and severe binge eaters (n = 126) aged 18-30 yr. In both groups, exercise dependence symptoms were significantly positively associated with reward sensitivity and interoceptive awareness, with the latter two variables predicting exercise dependence symptoms in hierarchical regression models; punishment sensitivity was significantly negatively related to such symptoms. Alexithymia was significantly associated with exercise dependence symptoms only in non-binge eaters; in severe binge eaters, alexithymia explained 0% of unique variance. Male sex was associated with more exercise dependence symptoms in severe binge eaters only. Participants in the severe binge group scored significantly higher on measures of exercise dependence, alexithymia, risky alcohol use, and sensitivity to reward and punishment, and significantly lower on emotion regulation, compared to those in the non-binge group. Hierarchical regression models explained 25% of variance in exercise dependence symptoms in non-binge-eaters and 43% in severe binge eaters. Findings are discussed in terms of the distinction between primary and secondary exercise dependence, the role of alexithymia, study limitations including data collection during the COVID-19 pandemic in Australia, and suggestions for future research.

Alexithymia and binge eating: Maladaptive emotion regulation strategy or deficient interoception?

Alexithymia has been linked to various excessive behaviors as a likely risk factor, including binge eating. Such relationships are often attributed to deficient emotional self-regulation in alexithymia, ostensibly leading to the use of maladaptive, externalized behaviors as strategies for coping with distress. An alternative view is that alexithymia reflects a fundamental deficit of interoceptive awareness that, in the case of binge eating, would suggest that internal satiety cues are poorly recognized, promoting overconsumption. The present study assessed the relationship between alexithymia and binge eating in the context of these competing hypotheses. A large online sample of young adults (n = 532) completed validated measures of alexithymia, emotion regulation, interoception, binge eating, emotional eating motivation, and sensitivity to reward and punishment. Correlations were as expected except for interoception, which showed minimal association with alexithymia or binge eating. In a hierarchical regression controlling for age, gender, education level and student status as covariates, binge eating was predicted by emotional eating motivation, emotion regulation (a negative predictor), alexithymia, and reward sensitivity, with the final model explaining 53% of variance in binge eating. Bootstrapped path analyses controlling for all other variables indicated that the relationship between alexithymia and binge eating was mediated by deficient emotion regulation but not deficient interoception, and that the relationships of both alexithymia and emotion regulation with binge eating were mediated by emotional eating motivation. Results are consistent with the notion that the association of alexithymia with binge eating reflects deficient emotion regulation in alexithymia, which can lead to adoption of maladaptive, externalized behaviors such as binge eating for coping with distress.

Impact of Alexithymia on the Lipid Profile in Major Depressed Individuals

Background

The cooccurrence of major depression and dyslipidaemia is associated with negative cardiovascular outcome, which seems to justify a better identification of the factors favouring the development of dyslipidaemia in major depressed individuals. In the literature, there are arguments in favour of a special relationship between dyslipidaemia and alexithymia. However, despite a high prevalence of alexithymia in major depressed individuals, no study has investigated the impact of this personality trait on the lipid profile in this particular subpopulation. Given these elements, the aim of this study was therefore to investigate the risk of dyslipidaemia associated with alexithymia in major depressed individuals to allow better cardiovascular prevention in this subpopulation. Subjects and Methods. Demographic and polysomnographic data from 242 major depressed individuals recruited from the clinical database of the sleep laboratory were analysed. Only individuals with a diagnosis of dyslipidaemia according to the diagnostic criteria of the International Diabetes Federation at admission were included in the “dyslipidaemia” group. Logistic regression analyses were used to determine the risk of dyslipidaemia associated with alexithymia in major depressed individuals.

Results

The prevalence of dyslipidaemia was 43.8% in our sample of major depressed individuals. After adjusting for the main confounding factors, multivariate logistic regression analyses demonstrated that alexithymia was a risk factor for dyslipidaemia in major depressed individuals.

Conclusions

In this study, we found that alexithymia is a risk factor for dyslipidaemia in major depressed individuals, which seems to justify better identification and adequate management of this personality trait in order to allow a better lipid profile in this subpopulation at high cardiovascular risk.

Why is alexithymia a risk factor for affective disorder symptoms? The role of emotion regulation

BACKGROUND

Ever since alexithymia was defined in the 1970s, robust associations have been observed between alexithymia and a variety of symptoms of psychopathology. Alexithymia is now widely regarded as an important transdiagnostic risk factor, and it is frequently assessed in clinical and research settings. However, despite this strong interest, it remains unclear exactly why (i.e., by which mechanisms) alexithymia is linked to psychopathology. In this paper, we hypothesise that alexithymia is linked to affective disorder symptoms because alexithymia impairs people's ability to regulate their emotions, and we empirically test this hypothesis.

METHOD

We administered a battery of psychometric measures to 501 adults in the United States, and examined the direct and indirect effects between alexithymia (Perth Alexithymia Questionnaire), emotion regulation ability (Perth Emotion Regulation Competency Inventory), and affective disorder symptoms (Depression Anxiety Stress Scales-21).

RESULTS

In the Pearson bivariate correlation matrix, alexithymia, emotion regulation difficulties, and affective disorder symptoms were all significantly correlated. In the modelling of direct and indirect effects, alexithymia was indirectly associated with affective disorder symptoms through emotion regulation difficulties (no significant direct effect).

LIMITATIONS

Our online survey data were all self-report data and cross-sectional. Future longitudinal work would be beneficial.

CONCLUSIONS

Our findings support contemporary theorising that alexithymia is linked to affective disorder symptoms via emotion regulation difficulties. These results help to clarify the mechanisms by which alexithymia may predispose people to affective disorder symptoms, and highlight the importance of considering the roles of alexithymia and emotion regulation in case conceptualisations and treatment planning.

Alexithymia is a mediating factor in the relationship between adult attachment and severity of depression and social anxiety

BACKGROUND

Major depressive disorder (MDD) and social anxiety disorder (SAD) are commonly occurring conditions, either alone or together (MDD-SAD). Recent research linked insecure attachment and alexithymia to MDD and/or SAD, indicating that the way affected individuals relate interpersonally and their ability to identify and communicate emotions are pertinent issues. The current study investigated the mediating role of alexithymia in the relationship between insecure attachment and severity of MDD and SAD symptoms.

METHOD

Using the SCID-I, participants (N=159) were identified as MDD-only (n=43), MDD-SAD (n=56), or a healthy control (n=60). Participants completed measures of adult attachment, depression, social anxiety and alexithymia (defined as difficulty identifying and describing feelings). A two-step mediation analysis approach recommended by Shrout and Bolger determined if alexithymia mediates the relationship between attachment-depression and attachment-social anxiety.

RESULTS

While alexithymia was high in MDD-only and MDD-SAD groups, individuals with MDD-SAD had significantly greater difficulty describing feelings. Alexithymia was a full mediator between attachment avoidance and depression, but only a partial mediator between attachment anxiety and depression. Meanwhile, alexithymia was a partial mediator for both attachment dimensions and social anxiety.

LIMITATIONS

Causal inferences regarding insecure attachment, alexithymia, and MDD and SAD cannot be assumed given the cross-sectional data. The 'externally oriented thinking' component in alexithymia was also excluded from analyses due to low reliability.

CONCLUSION

The results suggest emotional awareness and expression play a role in the illness severity for MDD and SAD-particularly in those with high attachment avoidance, offering a possible target for treatment and prevention strategies.

Gambling and Attachment: The Mediating Role of Alexithymia in Adolescents and Young Adults

Attachment and alexithymia play a central role in the appearance and persistence of pathological gambling and related comorbid addictive behaviours among adolescents and young adults. The aim of the present study was to explore the differences between problem gamblers and non-problem gamblers in gambling severity, spending, video gaming, alcohol and drugs use, attachment, and alexithymia, as well as the interaction among these variables. The study sample included 560 participants non-problem gamblers (mean age = 15.49 years) and 54 problem gamblers (mean age = 16.43 years). Gambling disorder (SOGS-RA), drugs, alcohol, video games and spending (MULTICAGE CAD-4), attachment (IPPA), and alexithymia (TAS-20) were measured. Student's t, Pearson's r, and multiple mediation analyses were conducted. Problem gamblers scored significantly higher in all substance and non-substance addictive behaviours and alexithymia; as well as significantly lower scores in mother and father attachment scales. Moreover, gambling was negatively associated to father and mother attachment, and positively associated to alexithymia. Finally, alexithymia was found to mediate between parental attachment and gambling, spending, videogame, drug and alcohol abuse, especially in the case of mother attachment. This study demonstrated that adolescent and young adult problem gamblers show higher comorbid addictions than non-problem gamblers, in the same way as higher levels of alexithymia and poorer father attachment. Given that higher comorbidity in early ages is associated with worse prognosis and higher psychopathology in adult life, early detection and treatment purposes becomes essential.

Alexithymia in Patients With Substance Use Disorders and Its Relationship With Psychiatric Comorbidities and Health-Related Quality of Life

Background: Alexithymia frequently correlates with several psychiatric disorders, including substance use disorder (SUD). However, most studies reporting the associations between alexithymia and psychiatric disorders have been performed in populations without SUD. This research, therefore, evaluates alexithymia in Spanish patients with SUD and the relationship among alexithymia, psychiatric comorbidities, psychological symptoms/traits, SUD variables, and health-related quality of life (HRQoL). Methodology: A cross-sectional study was conducted with 126 Spanish outpatients with SUD (75.4% males; mean age 43.72 ± 14.61 years), correlating their alexithymia levels (using the Toronto Alexithymia Scale 20 [TAS-20]) to their psychiatric comorbidities, psychological symptoms/traits, SUD variables, and HRQoL. Results: Alexithymia was significantly higher in patients who had cannabis use disorder. Higher alexithymia scores were also related to higher levels of depression, anxiety, impulsivity, and lower HRQoL. After multivariate analysis, trait anxiety, impulsivity, and the physical component summary of the HRQoL were found to be independently related to alexithymia. Conclusions: SUD patients with higher alexithymia levels have more frequently psychiatric comorbidities, present specific psychological features, and have worse HRQoL. Hence, it is important to evaluate these factors and offer more accurate psychotherapeutic approaches for this patient population.

Assessing Alexithymia: Psychometric Properties of the Perth Alexithymia Questionnaire in a Spanish-Speaking Sample

Alexithymia is a trait composed of difficulties identifying feelings (DIF), difficulties describing feelings (DDF), and externally orientated thinking (EOT). It is an important transdiagnostic risk factor for psychosomatic disorders and other types of emotion-based psychopathologies, and can reduce the efficacy of some treatment approaches. Alexithymia assessments are therefore important in psychiatric and research settings. The Perth Alexithymia Questionnaire (PAQ) was recently developed to enable more comprehensive alexithymia assessments, however, its psychometric properties need further examination and it is so far only available in English. In this study, we sought to address this by translating the PAQ into Spanish and testing its psychometric properties in an adult sample from Chile (N = 370). Confirmatory factor analyses found the PAQ to have a theoretically congruent factor structure, supporting the contemporary status of alexithymia as a multifaceted construct and the PAQ's capacity to assess the DIF, DDF, and EOT facets of alexithymia across negative and positive emotions. All subscale and composite scores had high internal consistency reliability, and demonstrated good concurrent and discriminant validity. The PAQ therefore appears to provide a robust and detailed alexithymia profile. This Spanish version should help to enable more comprehensive cross-cultural research into alexithymia and its role in and psychological disorders.

Morality in autism spectrum disorder: A systematic review

Moral reasoning and decision making help guide behavior and facilitate interpersonal relationships. Accounts of morality that position commonsense psychology as the foundation of moral development, (i.e., rationalist theories) have dominated research in morality in autism spectrum disorder (ASD). Given the well-documented differences in commonsense psychology among autistic individuals, researchers have investigated whether the development and execution of moral judgement and reasoning differs in this population compared with neurotypical individuals. In light of the diverse findings of investigations of moral development and reasoning in ASD, a summation and critical evaluation of the literature could help make sense of what is known about this important social-cognitive skill in ASD. To that end, we conducted a systematic review of the literature investigating moral decision making among autistic children and adults. Our search identified 29 studies. In this review, we synthesize the research in the area and provide suggestions for future research. Such research could include the application of an alternative theoretical framework to studying morality in autism spectrum disorder that does not assume a deficits-based perspective.

Alexithymia as a possible specifier of adverse outcomes: Clinical correlates in euthymic unipolar individuals

BACKGROUND

Alexithymia is a disabling condition frequently linked to major depressive disorder (MDD) and able to enhance symptoms severity and suicide risk. This study aimed to clarify whether patients with and without alexithymia may differ concerning illness presentation and clinical course, which is a major gap in the scientific literature.

METHODS

The present sample included 381 euthymic outpatients with MDD recruited at the Department of Neuroscience (DINOGMI), University of Genoa. The Toronto Alexithymia Scale (TAS-20) and additional rating scales (Clinical Global Impression (CGI), Hamilton Anxiety Rating Scale (HAM-A), Intent Score Scale (ISS) were administered to all participants.

RESULTS

Alexithymic patients were more likely to have lower educational level (11.6 ± 3.2 vs. 12.4 ± 3.4, p ≤ .05), have used previous psychiatric drugs (85.7% vs. 72.8%, p =.001), use current antidepressants (84.7% vs. 69.4%, p = <.001), and have higher cardiological comorbid disorders (10.7% vs. 5.0%, p = ≤.05). After multivariate analyses, alexithymia was associated with lower educational level (OR=0.928, p = .05), and higher current antidepressants use (OR 2.302, p = .01); difficulties in identifying feelings were associated with lower educational level (p = ≤.005), higher psychiatric comorbidity (p = ≤.001), and previous psychiatric medications (p = .01). Furthermore, having a lower educational level remained the only factor associated with both difficulties in communicating feelings (p = ≤.001) and thoughts oriented to external context (p = ≤.005).

LIMITATIONS

The study is limited by the small sample size and its cross-sectional nature.

CONCLUSIONS

Alexithymia appears a useful specifier of adverse outcomes, associated with distinct socio-demographic and clinical characteristics. Its identification would allow to provide a more personalized care.

Prevalence of alexithymia and associated factors among medical students at King Abdulaziz University: a cross-sectional study

BACKGROUND

Medical students are at higher risk of developing alexithymia due to the nature of their studies.

OBJECTIVES

Determine the prevalence of alexithymia and potential risk factors among medical students in Saudi Arabia.

DESIGN

A cross-sectional analytic study.

SETTINGS

University medical school.

PATIENTS AND METHODS

An institutional cross-sectional survey of medical students was conducted using the Toronto Alexithymia Scale (TAS-20) to assess the prevalence of alexithymia and potentially associated factors (gender, parental marital status, grade point average, status of accommodations, smoking status, year of study, childhood abuse, a history of mental illness, and physical activity).

MAIN OUTCOME MEASURES

Gender, parental marital status, grade point average, status of accommodations, smoking status, year of study, childhood abuse, a history of mental illness, and physical activity.

SAMPLE SIZE

347.

RESULTS

The prevalence of alexithymia among medical students was 49% (95% confidence interval [43.8-54.2]). A binary logistic regression model showed significant associations between alexithymia and academic year of study (lower risk of alexithymia in the clerkship (5th, 6th years); odds ratio [OR]: 0.43, 95% CI: 0.26-0.72), smoking (OR: 3.52, 95% CI: 1.60-3.34), grade point average (lowest; OR: 10.44, 95% CI: 4.24-25.77), history of childhood abuse (OR: 2, 95% CI: 1.20-8.77), and history of psychiatric illness (OR: 14.40, 95% CI: 4.76-21.06).

CONCLUSION

Almost half of the medical students suffer from alexithymia. Increasing the awareness about alexithymia among students and directing them where to seek help would facilitate the management of these problems.

LIMITATIONS

Limited only to medical students from the second year to the sixth year in a single medical college, which affects generalizability. The cross-sectional design might have also limited generalizability.

CONFLICT OF INTEREST

None.

The Importance of Considering Alexithymia during Initial Stages of Intimate Partner Violence Interventions to Design Adjuvant Treatments

Empirical evidence supports that individuals with alexithymia might be prone to certain types of violence, such as intimate partner violence against women (IPVAW). Moreover, considering that alexithymia is directly involved in behavior regulation, problems due to identifying and regulating emotional states might be postulated as responsible, at least in part, for the success of psychotherapeutic treatments designed for decreasing the future risk of reoffending. Therefore, we assessed whether alexithymia was a good predictor of the discontinuation of treatment (dropout) and the risk of recidivism during the initial stages of intervention in a sample of men convicted of IPVAW perpetration (n = 118), while controlling for potential confounding variables (i.e., socio-demographic characteristics, impulsivity, and drug misuse). Our data demonstrate that high alexithymic traits lead to dropout and a high risk of recidivism during the initial stages of treatment, remaining significant even after including potential confounding variables. Even though impulsivity and drug misuse increase the amount of explained variance, none of them moderates the association of alexithymia with dropout and/or reoffending. It should be noted that this study identified alexithymia as a direct modulator of violence due to its effects on discontinuing IPVAW treatment during initial stages. Therefore, as we gain knowledge analyzing the relationships between previously mentioned factors, it could be applied to develop valid screening methods along with strengthening current rehabilitation programs and designing adjuvant treatments to increase their effectiveness.

Effects of mindfulness-based interventions on alexithymia: a systematic review

QUESTION

Alexithymia has been found to be modifiable through treatment, with associated clinical benefits. Recent studies have begun to test the potential of mindfulness-based interventions to reduce alexithymia, using skills-based, group training to improve non-judgemental, present-moment awareness. The objective of this review therefore was to conduct a systematic synthesis to assess the current state of knowledge about the effect of mindfulness-based interventions on alexithymia to inform clinical practice.

STUDY SELECTION AND ANALYSIS

We carried out a systematic review of the literature and found four randomised controlled trials of the effect of mindfulness-based interventions on alexithymia, with a combined total of 460 participants.

FINDINGS

A random-effects meta-analysis, combining study endpoint data, showed a statistically significant effect of mindfulness-based treatment on alexithymia (Toronto Alexithymia Scale) compared with the control group (mean difference=-5.28, 95% CI -9.28 to -1.28, p=0.010). Subgroup analysis was conducted to investigate sources of heterogeneity (I2=52%). Heterogeneity was reduced when the meta-analysis was restricted to interventions of a similar duration (3 months or less).

CONCLUSIONS

Findings from our study should be replicated in further research with larger samples; however, the results indicate that mindfulness-based interventions may be an effective treatment in reducing alexithymia.

Mindfulness-based interventions and their effects on emotional clarity: A systematic review and meta-analysis

BACKGROUND

An inability to identify or describe internal emotional experience has been linked to a range of affective disorders. Despite burgeoning research on mindfulness-based interventions and their possible effects on emotion regulation, the effects of such interventions on emotional clarity is unclear. This review examines the evidence for the effect of mindfulness-based interventions on self-reported emotional clarity.

METHOD

Published studies indexed by PsycINFO, PubMed and Scopus, as available in April 2017, were systematically reviewed. Interventions that included mindfulness practice or philosophy, and reported a suitable measure of emotional clarity at pre- and post-intervention were selected. A random-effects meta-analysis was performed. Subgroup comparisons were also conducted to test for differences between clinical and non-clinical samples, between specific and approximate measures of emotional clarity, and between controlled and uncontrolled trials.

RESULTS

Seventeen studies met the criteria for inclusion. The overall estimated effect size for pre- to post-intervention was small to moderate, Hedges' g = 0.42, 95% CI [0.25, 0.59] and for between groups results was small to large, Hedges' g = 0.52, 95% CI [0.15, 0.90].

LIMITATIONS

Studies varied substantially in design quality and study characteristics. Furthermore, while interventions in the reviewed studies all had mindfulness components, many had other components in addition to mindfulness. Consequently, this review is limited by the heterogeneity of studies and results should be interpreted with caution.

CONCLUSIONS

There is preliminary evidence to suggest that mindfulness-based interventions may increase emotional clarity. However, more homogenous and targeted experiments are required to confirm these initial findings.

The Big Five personality dimensions and mental health: The mediating role of alexithymia

The role of personality constructs on mental health has attracted research attention in the last few decades. The Big Five personality traits have been introduced as parsimonious dimensions of non-pathological traits. The five-factor model of personality includes neuroticism, agreeableness, conscientiousness, extraversion, and openness to experience. The present study aimed to examine the relationship between the Big Five dimensions and mental health considering the mediating role of alexithymia as an important emotional-processing construct. A total of 257 participants were recruited from non-clinical settings in the general population. All participants completed the Ten-Item Personality Inventory (TIPI), 20-item Toronto Alexithymia Scale (TAS-20), and General Health Questionnaire-28 (GHQ-28). Structural equation modeling was utilized to examine the hypothesized mediated model. Findings indicated that the Big Five personality dimensions could significantly predict scores of alexithymia. Moreover, alexithymia could predict mental health scores as measured by indices of depression, anxiety, social functioning, and somatic symptoms. The fit indices (GFI=0.94; CFI=0.91; TLI=0.90; RMSEA=0.071; CMIN/df=2.29) indicated that the model fits the data. Therefore, the relationship between the Big Five personality dimensions and mental health is mediated by alexithymia.