Reliability and factorial validity of a Farsi version of the 20-item Toronto Alexithymia Scale with a sample of Iranian students

This study investigated the psychometric properties of the Farsi version of the 20-item Toronto Alexithymia Scale for 587 undergraduate students (349 women and 238 men) at the University of Tehran. All participants were asked to complete the Farsi version of the TAS-20, the Emotional Intelligence Scale, and the Mental Health Inventory. Findings supported the internal consistency, test-retest reliability, concurrent validity, and three-factor structure of the Farsi version of the 20-item Toronto Alexithymia Scale. The factors found in the Farsi version of this scale are similar to the three factors found previously and were accordingly labeled as Difficulty Identifying Feelings, Difficulty Describing Feelings, and Externally Oriented Thinking. The results provide evidence for applicability of the TAS-20 and its cross-cultural validity.     

Comparison of 26-item and 20-item versions of the Toronto Alexithymia Scale for psychiatric outpatients

This study compared the 20-item revised Toronto Alexithymia Scale with the 26-item version for 257 psychiatric outpatients. Scores on the 20-item version significantly correlated with those on the 26-item inventory even when controlled for depressed mood. Furthermore, the 20-item scale showed greater internal consistency. Factor analysis for both versions indicated three subfactors but the factors in the TAS-20 accounted for greater common variance (92%) than for the factors in the TAS-26 (78%). The total variance accounted for by these factors on the TAS-20 (45%) was also greater than for the TAS-26 (38%).     

Psychometric properties of a revised Spanish 20-item Toronto Alexithymia Scale adaptation in multiple sclerosis patients

There have been a small number of investigations of alexithymia in multiple sclerosis (MS) using the 20-item Toronto Alexithymia Scale (TAS-20). However, the TAS-20 factor structure has not yet been evaluated in a MS patient sample, and earlier Spanish translations of this instrument require some improvement. We aimed to evaluate the factorial validity and reliability of an improved Spanish translation of the TAS-20 (the TAS-20-S). The TAS-20-S was completed by 221 MS patients. Confirmatory factor analysis was used to compare the fit of six different factor models. Internal consistency and retest reliability coefficients were also computed. The correlated three-factor model and the higher-order factor model made up of Difficulty Identifying Feelings, Difficulty Describing Feelings, and Externally Oriented Thinking achieved the best fit. Alpha coefficients ranged between .87 and .67; mean inter-item correlations ranged between .48 and .20; and retest correlations after 6 months ranged between .61 and .52. A high degree of alexithymia was present in 18.1% of the sample. Reliability and the traditional three-factor structure were demonstrated for the TAS-20-S, which can now be recommended for assessing an aspect of emotional processing in MS patients.     

Factorial validity of the 20-item Toronto Alexithymia Scale

The 20-item Toronto Alexithymia Scale (TAS-20) was developed in previous research to measure a general dimension of alexithymia with three inter correlated factors. These three factors reflect distinct facets of the alexithymia construct: (1) difficulty identifying feelings and distinguishing them from the bodily sensations of emotion, (2) difficulty describing feelings to others, and (3) an externally orientated style of thinking. This study tested the three-factor model for the TAS-20, using confirmatory factor analysis, in separate samples of young adults from Germany, Canada, and the United States. The previously established three-factor model was found to be replicable in all three samples. In addition, the full TAS-20 and its three factors demonstrated adequate internal reliability in all three samples. Although evaluation of the convergent, discriminant, and criterion validity of the TAS-20 is required in diverse cultural groups, the present results provide evidence for the factorial validity and internal reliability of the TAS-20.     

A Swedish translation of the 20-item Toronto Alexithymia Scale: cross-validation of the factor structure

The purpose of this study was to develop a new Swedish translation of the twenty-item Toronto Alexithymia Scale (TAS-20) and to examine if the theoretical structure that underlies the factor structure of the English version of the TAS-20 could be recovered in this Swedish translation of the instrument. A sample of 157 undergraduate students of psychology was tested. Using confirmatory factor analysis, the previously established three-factor TAS-20 model was found to be replicable in this sample. In addition, the Swedish translation of the TAS-20 showed adequate internal reliability. The present study also illustrates the importance of using back translation methodology when transposing psychometric instruments from one language to another.     

Assessing reliability and validity of the Farsi version of the Toronto Alexithymia Scale in a sample of substance-using patients

The aim of this study was to estimate reliability and factorial validity of the Farsi version of the Toronto Alexithymia Scale-20 (TAS-20) for 321 substance-abusing patients (187 men and 134 women). All were asked to complete the Farsi version of the Toronto Alexithymia Scale-20, the Emotional Intelligence Scale, and The Mental Health Inventory. Analysis supported the internal consistency, test-retest reliability, concurrent validity, and three-factor structure of the Farsi version of the TAS-20 for substance users. The factors are similar to the three reported previously and were labeled as Difficulty Identifying Feelings, Difficulty Describing Feelings, and Externally oriented Thinking. These results provide evidence for applicability of the TAS-20 and its cross-cultural validity.     

Assessing Alexithymia: Psychometric Properties and Factorial Invariance of the 20-Item Toronto Alexithymia Scale in Nonclinical and Psychiatric Samples

The 20-item Toronto Alexithymia Scale (TAS-20) is a self-report questionnaire designed to measure the three components of alexithymia; difficulty identifying feelings in the self (DIF), difficulty describing feelings (DDF), and externally orientated thinking (EOT). We examined the scale’s psychometric properties in Australian nonclinical (N = 428) and psychiatric (N = 156) samples. In terms of factorial validity, confirmatory factor analyses found the traditional 3-factor correlated model (DIF, DDF, EOT) to be the best and most parsimonious solution, but it did not reach adequate levels of goodness-of-fit in either sample. Several EOT items loaded poorly on their intended factor, and a reverse-scored item method factor was present; the factor structure of the scale was invariant across both samples. A higher-order factor model (with a single higher-order factor) was slightly inferior to the correlated models, but still tenable. The total scale score and DIF and DDF subscales displayed sound internal consistency, but the EOT subscale did not. We conclude that the TAS-20 has, for the most part, adequate psychometric properties, though interpretation should focus only on the total scale score and DIF and DDF subscales; we recommend the EOT subscale score not be used. Implications for clinical use and future revision of the scale are discussed.     

Alexithymia and its measurement: confirmatory factor analyses of the 20‐item Toronto Alexithymia Scale and the Bermond–Vorst Alexithymia Questionnaire

Alexithymia refers to the difficulties an individual has in experiencing and expressing feelings. The 20‐item Toronto Alexithymia Scale (TAS‐20) and the Bermond–Vorst Alexithymia Questionnaire (BVAQ) with two parallel versions of 20 items have been constructed to measure it. The present study compared the psychometric properties of these two self‐report questionnaires in English (N=290) and French (N=322) language versions. Confirmatory factor analysis was used to examine the fit between the hypothesized factors and the data. Results revealed a better fit to the data for the second version of the BVAQ (BVAQ‐20B) for both language versions as compared to the TAS‐20, the whole BVAQ, or the first version of the BVAQ (BVAQ‐20A). Additionally, the factor comparison of both language versions indicated that only the factorial structure of the BVAQ‐20B was replicable across languages. Concurrent validity of the questionnaires is discussed. Copyright © 1999 John Wiley & Sons, Ltd.     

Investigating the measurement structure of the Turkish version of the Dysfunctional Attitudes Scale-9

Current Psychology - The Turkish version of the Dysfunctional Attitudes Scale-9 (DAS-9) items assesses an individual’s level of endorsement of dysfunctional attitudes associated with...     

The factor structure and psychometric properties of the Italian version of the Acceptance of Cosmetic Surgery Scale

The current study examined the validity of the Italian version of the Acceptance of Cosmetic Surgery Scale (ACSS; Henderson-King & Henderson-King, 2005) in a sample of 378 Italian adult women. A series of confirmatory factor analyses were conducted. A three-factor solution provided the best fit to the data and confirmed the Intrapersonal, Social, and Consider dimensions. The three factors were strongly inter-correlated. Cronbach's alphas were high (all alphas > .86). The scale showed good convergent and discriminant validity (estimated by Composite Reliability and the Average Variance Extracted). The nomological validity of the Italian version of the ACSS was confirmed by its significant correlations with participants’ body dissatisfaction and sociocultural influences (internalization of thin ideals and perceived media pressure). The ACSS seems to be a useful measure of acceptance of cosmetic surgery in the Italian context. This instrument can be used with Italian speakers for research, health promotion, and preventive interventions.     

Factorial validity and measurement invariance of the 20-item Toronto Alexithymia Scale in clinical and nonclinical samples

The most widely used instrument to measure alexithymia is the 20-item Toronto Alexithymia Scale (TAS-20). However, different factor structures have been found in different languages. This study tests six published factor models and metric invariance across clinical and nonclinical samples. It also investigated whether there is a method effect of the negatively keyed items. Second-order models with alexithymia as a higher order factor are tested. Confirmatory factor analyses showed that the original factor model with three factors-difficulty identifying feelings (DIF); difficulty describing feelings (DDF) and externally oriented thinking (EOT)-is the best fitting model. Partial measurement invariance across samples was illustrated but requires further study. A weakness of the model is the low internal consistency of the third factor. Because models with a method factor had a better fit, future reconsideration of the negatively formulated items seems necessary. No evidence was found for the second-order models.     

Factor structure and psychometric features of the Italian version for the EPQ-R

Factor structure and psychometric properties of the Eysenck Personality Questionnaire—Revised were investigated in an Italian sample of 553 subjects (328 females and 225 males). The main psychometric features of the questionnaire are similar to those reported for the original English form. Factor analysis, however, showed six (out of 32) items of the P scale, referring chiefly to compliance to formal rules of conduct, to have their highest loadings on the Lie factor. The consistency of this finding with previous results suggests that, in the Italian context, these items tend to be more closely connected with the social conformity aspect of the Lie scale than with the psychopathy facet of Psychoticism and should be excluded from the scoring of the P dimension.     

Reliability and factorial structure of the Chinese version of the State-Trait Anxiety Inventory

The Chinese version of the State-Trait Anxiety Inventory (STAI) was administered to 2150 Chinese secondary-school students. Reliability data revealed that the A-State and A-Trait scales had a high internal consistency, and high item-total correlations were found for most of the items under each scale. Factor analytic data showed that while two factors were abstracted from the A-Trait scale (Anxiety Present and Anxiety Absent), two (Anxiety Present and Anxiety Absent) or three (Anxiety Present, Calmness, and Happiness) factors were abstracted from the A-State scale. By randomly splitting the total sample into two subsamples, factors extracted from the first two factor-solutions could be reproduced reliably and high coefficients of congruence were found. These findings generally suggest that the Chinese A-State and A-Trait scales possess acceptable psychometric properties and the factor analytic data tend to support Spielberger's conception of the multidimensional nature of the A-State and A-Trait scales.This work was supported by UPGC Grant CPAS/714.     

An investigation into the psychometric properties of the CORE‐OM in patients with eating disorders

Aim: The current study aimed to explore the psychometric properties of the CORE‐OM (Clinical Outcomes in Routine Evaluation – Outcome Measure) when used in an eating disorder sample. Method: The CORE‐OM was administered at assessment to 360 individuals referred to an eating disorders service. Principal component analysis was conducted to look at the psychometric structure of the CORE‐OM, and psychometric properties were investigated using analyses of reliability and validity. Results: Analyses of the psychometric structure suggested a three‐component solution reflecting negatively worded, positively worded and risk items. The CORE‐OM showed good acceptability, acceptable internal and test‐retest reliabilities, as well as good convergent and known groups validity. Conclusions: The results of the current study support the CORE‐OM as a reliable and valid measure for assessing psychological distress in eating disorders.     

The psychometric properties of the Greek version of the State-Trait Anxiety Inventory in cancer patients receiving palliative care

Objectives: To validate the Greek version of the State-Trait Anxiety Inventory (STAI) in a sample of cancer patients. Design: The scale was administered twice, with a 3-day interval, to 99 eligible patients with cancer. Together with the Greek version of STAI scale, the patients also completed the anxiety subscale from the Hospital Anxiety and Depression scale (HAD). Observations: Factor analysis yielded a three-factor solution, explaining 47.143% of the variance. Cronbach α for three scales was between 0.729 and 0.852. Inter-scale correlations were moderate-to-high and ranged from 0.282 to 0.563 (p < 0.0005, p < 0.005). The assessment of the relationships among the Greek STAI scales and HAD-Anxiety showed statistically significant correlations between them (r ranged between 0.428 and 0.596, p < 0.0005). The test/retest reliability of scale (Pearson's ‘r’), showed that the coefficient agreement ranged between 0.85 and 0.90 (p < 0.0005). Univariate analysis revealed significant correlations between female gender, metastasis, performance status, chemotherapy, mild opioids and low education level with increased anxiety. Conclusions: These results support that the Greek version of STAI is an instrument with satisfactory psychometric properties, and is a valid research tool for Greek cancer patients.     

Evaluating psychometric properties of Farsi version of the Positive and Negative Perfectionism Scale

This study examined the psychometric properties of the Farsi version of the Positive and Negative Perfectionism Scale. Two samples of 97 (56 women, 41 men) and 115 (67 women, 48 men) undergraduate students at the University of Tehran participated. Findings supported the internal consistency, test-retest reliability, concurrent validity, and factor structure of the Farsi version. Factor analysis provided evidence for two dimensions of perfectionism, Positive and Negative perfectionism. The two dimensions had significant negative and positive correlations, respectively, with measures of psychological distress and health, respectively. The Farsi version of the Positive and Negative Perfectionism Scale presented good psychometric properties for use in research.     

The stress and coping questionnaire for children (school version and asthma version): construction,factor structure,and psychometric properties

Based on Lazarus and Folkman's 1984 Stress-Coping Model, a self-report measure for children between 8 and 12 years of age was constructed. It is called the Stress and Coping Questionnaire for Children (School version and Asthma version) and measures children's emotional responses and coping strategies when they confront school-related and asthma-related stressors. The factor structure of this questionnaire was assessed and cross-validated in two samples, one of 392 primary school children without a chronic disease and one of 119 children with asthma. Five scales of coping strategies with regard to two school-related stressors and one asthma-related stressor were distinguished in a reliable way, Approach, Avoidance, Seeking Social Support, Aggression, and Crying.     

The Intolerance of Uncertainty Scale: psychometric properties of the English version

Research is now suggesting that intolerance of uncertainty may be very important in understanding worry and may play a key role in the etiology and maintenance of worry. The present study attempted to further our understanding of intolerance of uncertainty by examining the psychometric properties of the English version of the Intolerance of Uncertainty Scale (IUS), which has already been validated in French. Factor analysis indicated that the IUS has a four-factor structure that represents the idea that uncertainty is stressful and upsetting, uncertainty leads to the inability to act, uncertain events are negative and should be avoided, and being uncertain is unfair. The IUS has excellent internal consistency, good test-retest reliability over a five-week period, and convergent and divergent validity when assessed with symptom measures of worry, depression, and anxiety. Overall, this study suggests that the IUS is a sound measure of intolerance of uncertainty and supports the idea that intolerance of uncertainty is an important construct involved in worry.     

The psychometric properties of the Hebrew version of Cloninger's Tridimensional Personality Questionnaire

The Hebrew Tridimensional Personality Questionnaire was administered to over a thousand individuals in the community, 16–78 years of age. Factor analysis was run first on individual items, and then on the 12 sub-scales described by [Cloninger, C.R., Pryzbeck, T.R., & Svrakic, D.M. (1991). The TPQ: US normative data. Psychological Reports, 69, 1047–1051)]. The factor analyses were restricted to four orthogonal factors in order to attempt confirmation of the corrected four-factor solution [Stallings, M.C., Hewitt, J.K., Cloninger, R.C., Heath, A.C., & Eaves, L.J. (1996). Genetic and environmental structure of the TPQ: three or four temperament dimensions? Journal of Personality and Social Psychology, 70 (1), 127–140)]. In the individual item analysis four orthogonal factors recognizable as Novelty Seeking, Reward Dependence, Harm Avoidance and Persistence emerged. However only up to half of the items originally ascribed to each factor loaded sufficiently and exclusively on the appropriate factor. When the 12 sub-scales were entered into factor analysis the four orthogonal factors were produced, and the structure satisfactorily confirmed. A few exceptions to orthogonality were observed. The data were analyzed for sex differences and age effects. Women scored higher than men did on most sub-scales of Harm Avoidance and Reward Dependence. The younger group (up to 21 years of age) scored higher on Novelty Seeking and Reward Dependence and lower on Harm Avoidance than the older group, but no sex by age interaction was detected. Preliminary normative Israeli data are supplied, and implications of the group differences discussed.     

Predictive validity of the Chinese version of the Adult Suicidal Ideation Questionnaire: psychometric properties and its short version

The success of screening for individuals at suicidal risk among the general population relies heavily on the availability of a reliable and validated instrument. However, there remains a lack of a well-validated screening tool for suicidal risk in Chinese, despite the fact that about a quarter of the world's suicides takes place in China. In view of the severity of the suicide problem among the Chinese population, there is a crucial need to develop robust screening tools locally. This study investigates the psychometric properties related to the Chinese version of the Adult Suicidal Ideation Questionnaire (ASIQ) with a 2-wave, population-based panel study in the Hong Kong Special Administrative Region, People's Republic of China. Two-thousand sixteen Chinese people were interviewed for their suicidality, psychological well-being, and ASIQ scores. The Chinese ASIQ was shown to have strong internal reliability, convergent validity, and factorial validity. This study also demonstrated its predictive validity by examining sensitivity and specificity in identifying subsequent suicidality. A 4-item short version of ASIQ was also developed.