Construct validity of the Life Orientation Test

The Life Orientation Test (LOT; Scheier & Carver, 1985) is a common measure of optimism. Previous studies of the convergent and discriminant (vis-à-vis neuroticism) validity of the LOT have relied solely on questionnaires. Our Study 1 was a multitrait, multimethod investigation of the LOT incorporating Gottschalk and Gleser's (1969) method of content analysis of speech samples as a nonquestionnaire assessment method. The LOT did not correlate significantly with the Gottschalk Hope Scale (Gottschalk, 1974) derived from speech samples. Study 2 was an initial attempt to determine the nature of the differences between these alternate measures of optimism. In particular, it was hypothesized and found that the LOT was more fakable than the Hope Scale. Participants who received special instructions to "fake good" scored significantly higher on the LOT than did control participants who received no special instructions. Faking instructions did not significantly affect scores on the Hope Scale.     

The relationship between dispositional optimism, dispositional pessimism, repressive coping and trait anxiety

The purpose of this study was to investigate the relationship between dispositional optimism, dispositional pessimism, repressive coping and trait anxiety. The Marlowe-Crowne scale (MC) and the Bendig version of the Taylor Manifest Anxiety Scale (MAS) were used to select repressor and control groups (N=143, aged between 18 and 47 years), who subsequently completed a measure of dispositional optimism, the Life Orientation Test (LOT), which consists of two sets of items: optimism and pessimism. Repressors (high MC, low MAS) reported significantly lower pessimism than all other participants. When the pessimism scale was divided into high and low categories, there were significantly more repressors in the low pessimism group than the other low trait anxiety group, low anxious (low MC, low MAS). However, for the optimism scale the opposite pattern of results was found, with significantly more low anxious in the high optimism group than repressors. These results support the assertion that the pessimism and optimism scales of the LOT are not the same construct and should be measured separately.     

Measures of self-efficacy and optimism in older adults with generalized anxiety

This study provides initial psychometric data for the Self-Efficacy Scale (SES) and the Life Orientation Test (LOT) in a sample of older adults with generalized anxiety disorder (GAD). Participants included 76 adults, ages 60 to 80, who met Diagnostic and Statistical Manual of Mental Disorders (4th ed.) criteria for GAD. Self-efficacy and outcome expectancies were lower in older adults with GAD relative to published data from younger and older community samples. Both the SES and LOT demonstrated adequate internal consistency. Confirmatory factor analysis provided evidence for optimism and pessimism factors within the LOT and exploratory factor analysis of the SES suggested threefactors that overlap with previous findings. Overall, the data support the potential utility of these instruments in late-life GAD and set the stage forfuture investigations of generalized self-efficacy expectancies and outcome expectancies (or optimism) as they relate to the prediction of affect and behavior in this group.     

Validation of the Gratitude Questionnaire (GQ) in Taiwanese Undergraduate Students

The aim of this study was to translate and validate the Gratitude Questionnaire (GQ; McCullough et al. 2002) using Taiwanese undergraduate students. A total of 608 college students (M _age = 20.19, SD = 2.08) were recruited for the current study and they completed the GQ, optimism, happiness, and big five personality questionnaires. Confirmation factor analysis indicated that a five item model was a better fit than the original six item model. Cross-validation also supported the modified Chinese version of the GQ. In addition, the Chinese version of the GQ was, as expected, positively correlated with optimism, happiness, agreeableness, and extraversion, which supported its construct validity. The Cronbach’s α was .80 for the Chinese version of the GQ, indicating satisfactory validity and reliability in a Taiwanese student sample. It was concluded that the Chinese version of the GQ would be useful for assessing individual differences in dispositional gratitude.     

Optimism, neuroticism, coping, and symptom reports: an alternative interpretation of the Life Orientation Test

Found in two studies that the Life Orientation Test (LOT) had limited discriminant validity relative to measures of neuroticism. Furthermore, although previous correlations of the LOT with measures of symptom reports and coping behaviors were replicated, these correlations were eliminated when neuroticism was controlled. In contrast, the correlations of symptoms and coping with neuroticism remained significant when LOT scores were controlled. Thus, the LOT is virtually indistinguishable from measures of neuroticism, and previously reported findings using this scale are perhaps more parsimoniously interpreted as reflecting neuroticism rather than optimism. These findings are discussed in terms of existing support for models of optimism and self-control and general methodological issues in studies of personality and health.     

Optimism,perceived control over stress,and coping

To examine the ability of the expectancy-based personality dimensions dispositional optimism and perceived control over stress to predict the ways in which people characteristically attempt to cope with stress, 420 undergraduate students completed the Life Orientation Test (LOT; Scheier and Carver, 1985), a measure of perceived control over stress, and the dispositional version of the COPE Inventory (Carver, Scheier and Weintraub, 1989). The results revealed a modest but reliable positive correlation between optimism and the perceived control measure. Principal-components analysis of the COPE revealed a factor structure which was generally in accord with prior research. Optimism was positively correlated with active coping and positive reinterpretation, and negatively correlated with focusing on and venting of emotion. Perceived control over stress was negatively correlated with behavioural disengagement. Implications and directions for future research are discussed.     

Psychometric properties of Scheier and Carver's Life Orientation Test in a sample of Australian prisoners

The psychometric properties of Scheier and Carver's 1985 Life Orientation Test (LOT), which is a measure of optimism, were examined as part of a study of education, training, work experience, and expectations of sentenced adult prisoners in Western Australia. All prisoners at five metropolitan public prisons were invited to participate and 453 accepted. This represented a response rate overall of about 41%, with response rates at each of the individual prisons ranging from 13% to 90%. The average age of the prisoner sample was 34.4 yr. (SD = 10.2 yr.). The proportion of men in the sample was 79.7%. Mean sentence length was 66.9 mo. (58.5 for women and 69.2 for men), and the number of months of sentence remaining averaged 44.4 mo. (41.0 for women and 45.3 for men). Means and standard deviations of the LOT scores for prisoners were similar to those of other groups, and demographic differences between prisoners were not statistically significantly related to scores. The internal reliability of the LOT scores was acceptable. Confirmatory factor analyses indicated that the two-factor item-keying model fitted the prisoner data better than a one-factor model. However, the two factors did not simply reflect underlying optimism and pessimism constructs but were substantially affected by item keying.     

The Accuracy of the Life Orientation Test–Revised (LOT–R) in Measuring Dispositional Optimism: Evidence From Item Response Theory Analyses

The accuracy of the Life Orientation Test–Revised (LOT–R) in measuring dispositional optimism was investigated applying item response theory (IRT). The study was conducted on a sample of 484 university students (62% males, M age = 22.79 years, SD = 5.63). After testing the 1-factor structure of the scale, IRT was applied to evaluate the functioning of the LOT–R along the pessimism–optimism continuum. Item parameter estimates and the test information function showed that each item and the global scale satisfactorily measured the latent trait. Referring to the IRT estimated trait levels, the validity of the LOT–R was studied examining the relationships between dispositional optimism and psychological well-being, sense of mastery, and sense of coherence. Overall findings based on IRT analyses provide evidence of the accuracy of the LOT–R and suggest possible modifications of the scale to improve the assessment of dispositional optimism.     

An empirical evaluation of alternative methods of estimation for confirmatory factor analysis with ordinal data

Confirmatory factor analysis (CFA) is widely used for examining hypothesized relations among ordinal variables (e.g., Likert-type items). A theoretically appropriate method fits the CFA model to polychoric correlations using either weighted least squares (WLS) or robust WLS. Importantly, this approach assumes that a continuous, normal latent process determines each observed variable. The extent to which violations of this assumption undermine CFA estimation is not well-known. In this article, the authors empirically study this issue using a computer simulation study. The results suggest that estimation of polychoric correlations is robust to modest violations of underlying normality. Further, WLS performed adequately only at the largest sample size but led to substantial estimation difficulties with smaller samples. Finally, robust WLS performed well across all conditions.     

A Revisit of General Self-Efficacy Scale: Uni- or Multi-dimensional?

While a large body of research provides strong evidence that general self-efficacy (GSE) is a unidimensional construct, no study has been conducted to test or compare its single-factor structure with alternative factor structures (e.g., two-factor structure). The main purpose of this study was to re-examine its factor structure in a Chinese context. The Chinese version of GSE scale was administered to 195 Chinese university students. Personal identity and optimism instruments were also used to examine the predictive validity of GSE. Exploratory factor analysis determined that a two-factor solution was best fitting, explaining 54.49 % of the variance, which was reproduced reliably in the two subsamples. Through a series of factor model testing by confirmatory factor analysis, findings indicated that the two-factor structure was reliable, internally valid as demonstrated. Subsequent regression analyses also showed that only one of the two factors significantly predicted personal identity and optimism, whereas the other one was irrelevant. The findings emphasized the value of revisiting GSE as a uni- or multi-dimensional construct.     

Action Type-Based Factorial Structure of Brief COPE among Hong Kong Chinese

Brief COPE (Carver in International journal of Behavioral Medicine, 4(1), 92–100, 1997) is a multidimensional scale that measures situational and dispositional coping responses. This study evaluated its factor structure and psychometric properties using two Hong Kong college samples (Sample 1; n = 204 & Sample 2; n = 221). Results of confirmatory factor analysis (CFA) indicated that an eleven-factor model, based on action goals (Skinner et al. in Psychological Bulletin, 129(2), 216, 2003), demonstrated a good fit across the two samples. The eleven-factor model fit the data better than five alternative models. We also validated a Traditional Chinese translation of the scale. Multiple-groups CFAs indicated partial scalar invariance across the English and Chinese versions in Hong Kong participants. Nonetheless, convergent validity was supported by the associations between the scores of some, but not all, of the dimensions and related psychological constructs, including psychological distress, optimism, and locus of control. Such associations might help differentiate conceptually distinct coping dimensions. Likewise, our results provided support for the reliability of some, but not all, of the subscale scores. In sum, our results support the multidimensionality of Brief COPE and the use of some of the measure’s factors and subscales. Moreover, Brief COPE and its translated version demonstrated acceptable psychometric properties in Hong Kong Chinese.     

The role of optimism in patients with tinnitus and in patients with hearing impairment

Abstract

Optimism was investigated in a sample of audiology clinic patients, consisting of one group of tinnitus sufferers (N = 30) and one group of hearing impaired subjects not experiencing tinnitus (N = 44). Optimism was measured by the Life Orientation Test (LOT). In the tinnitus group the LOT correlated significantly with measures of tinnitus related distress and in the hearing impaired group with measures of disability and emotional reactions due to the hearing impairment. Cronbach's alphas for the measures used were generally high. Principal components analysis of the LOT confirmed earlier findings by showing two separate factors; one with the positively worded LOT items reflecting the presence of optimism and one with the negatively worded LOT items reflecting the presence of pessimism. The results indicate that dispositional optimism is an usable concept in research with audiological samples, and that optimism is related with tinnitus distress and experienced disability and emotional reactions due to hearing impairment. Further research should investigate the possible role of personality factors in tinnitus and hearing impairment.     

The Utility of the Revised Life Orientation Test to Measure Optimism among Hong Kong Chinese

To examine the utility of the revised Life Orientation Test (LOT-R) to measure optimism among Hong Kong Chinese, the psychometric properties of the revised and the original versions of the Life Orientation Test were compared. A total of 248 Hong Kong Chinese undergraduates were studied in the fall and 165 of these participants were tested again 5 months later. Results indicated that the LOT-R is a reliable and valid measure of dispositional optimism among Hong Kong Chinese. Confirmatory factor analysis showed that the LOT-R represents a one-factor model of optimism better than does the original version. Despite its brevity, the LOT-R is psychometrically sounder than the original sclae. These findings point to the feasibility of replacing the original with the revised scale in future research among Hong Kong Chinese. However, the utility of the revised test in cross-cultural comparisons may still be limited by the absence of emic components. Further research on optimism in the Chinese people with the LOT-R should pay more attention to the identification of emic dimensions.     

Dimensionality of the Revised Life Orientation Test and the status of filler items

Dispositional optimism was originally construed as unidimensional (Scheier & Carver, 1992). However, LOT‐R data (Scheier, Carver, & Bridges, 1994) generally appeared bidimensional as a number of studies suggest a two‐correlated‐factor model representing optimism and pessimism. Attempts at corroborating one‐factor models suggest that correlated errors between positively worded items are required for an adequate account of the data. This article explains bidimensionality by the influence of social desirability (i.e., being positive is desirable). Namely, in the present study, correlated errors are interpreted as the presence of individual differences related to the tendency to present oneself in a positive manner. Moreover, response styles can be corroborated by appropriately modelling the entire covariance matrix (i.e., including fillers), by checking that fillers with positive meaning correlate with the faking‐good group factor. Students (N = 442) responded to a French adaptation of the LOT‐R. The data were submitted to SEM analyses. The traditional two‐correlated factor model (optimism‐pessimism) was outperformed by a model including a common factor (“optimism”) plus a factor grouping positive items only (“faking positive”). In addition, reliability analyses showed that the choice of the model clearly impacts the reliability estimates based on the model. The entire dataset was modelled for exploring the relationships between the fillers and the measurement model (i.e., the set of all relationships between factors and their indicators). The specific correlations of fillers whose meaning is positive with the faking‐good group factor corroborated its substantial interpretation. It is concluded that there is no empirical necessity for hypothesizing that the dispositional optimism construct must be split into optimism plus pessimism. L'optimisme dispositionnel a été initialement conçu comme unidimensionnel (Scheier & Carver, 1992). Néanmoins, les données recueillies avec le LOT‐R (Scheier, Carver, & Bridges, 1994) sont généralement apparues bidimensionnelles, un modèle à deux facteurs corrélés d'optimisme et de pessimisme étant suggéré par de nombreuses études. Les tentatives pour corroborer les modèles unifactoriels suggèrent que corréler les erreurs entre items positivement formulés est nécessaire pour rendre compte adéquatement des données. Cet article explique la bidimensionalité par L'influence de la désirabilité sociale (i.e., il est désirable de paraître positif). Ainsi, dans la présente étude, la corrélation des erreurs est interprétée comme le signe de L'existence de différences individuelles dans la tendance à se présenter de manière positive. L'existence de styles de réponse peut de plus être corroborée en modélisant correctement la matrice de covariances entière (y compris les items servant de leurre), en vérifiant que les leurres ayant une signification positive corrèlent avec le facteur ayant trait à la désirabilité des réponses. Des étudiants (N = 442) ont rempli une adaptation française du LOT‐R. Les données ont été analysées par modèles d'équations structurelles. Le modèle traditionnel à deux facteurs corrélés (optimisme et pessimisme) s'est révélé moins performant que le modèle comprenant un facteur commun («optimisme») et un facteur de groupe lié aux items positifs («faire bonne figure»). En outre, les analyses de fidélité ont montré que le choix d'un modèle affecte nettement les estimations de fidélité basées sur ce modèle. La matrice de covariances entière a été modélisée pour explorer les relations entre les leurres et le modèle de mesure (i.e., L'ensemble des relations possibles entre les facteurs et leurs indicateurs). Les corrélations entre les leurres à signification positive et le facteur de désirabilité ont corroboré L'interprétation proposée. En conclusion, il n'y a pas de nécessité empirique à supposer que le concept d'optimisme dispositionnel doive être scindé en deux concepts d'optimisme et de pessimisme. El optimismo disposicional se conceptuó originalmente como unidimensional (Scheier & Carver, 1992). Sin embargo, los datos del LOT‐R (Scheier, Carver, & Bridges, 1994) generalmente han aparecido como bidimensionales, ya que un número de estudios ha sugerido un modelo de dos factores correlacionados que representan optimismo y pesimismo. Los intentos encaminados a corroborar los modelos de un factor sugerían que, para lograr una explicación adecuada de los resultados, se requería de errores correlacionados entre los reactivos positivos. Este artículo explica la bidimensionalidad por medio de la influencia de la deseabilidad social (es decir, ser positivo es deseable). En el presente estudio, los errores correlacionados se han interpretado como la presencia de diferencias individuales relacionadas con la tendencia a presentarse a sí mismo en una forma positiva. Además, los estilos de respuesta pueden corroborarse, si se modela adecuadamente la base de datos completa (es decir, si se incluyen los reactivos de relleno). Se verifica que los reactivos de relleno con significado positivo correlacionen con el factor del grupo que simula una apariencia positiva. Cuatrocientos cuarenta y dos estudiantes respondieron a la adaptación francesa del LOT‐R. Los datos se analizaron mediante el modelo de ecuaciones estructurales. El modelo que incluye un factor común (“optimismo”) más un factor que agrupa sólo los reactivos positivos (“positivos simulados”) superó al modelo tradicional de dos factores correlacionados (optimismo‐pesimismo). Asimismo, los análisis de fiabilidad mostraron que la elección del modelo impacta claramente los cálculos de fiabilidad basados en el modelo. Se modeló la base de datos completa para explorar las relaciones entre los reactivos de relleno y el modelo de medición (es decir, la serie de todas las relaciones entre los factores y sus indicadores). Las correlaciones específicas de los de relleno, cuyo significado fuera positivo, con el factor del grupo que simula una apariencia positiva corroboró su interpretación. Se concluye que no hay necesidad empírica de hipótesis que propongan que el constructo de optimismo disposicional deba dividirse en optimismo más pesimismo.     

Predicting performance in ski and swim championships: effectiveness of mood, perceived exertion, and dispositional optimism

Two studies were performed with young athletes to investigate the utility of three psychological tests regarding the prediction of sport performance: the Profile of Mood States. Ratings of Perceived Exertion, and Dispositional Optimism. In Study 1, young male and female cross-country skiers and ski-marksmen in final preparation for the Junior National Swedish Championships were tested. Measured 5 wk. before both competitions, the higher the optimism (LOT), the better performance. In Study 2, which tested young swimmers in preparation for the Senior National Swedish Championships, competitors who had the highest scores on optimism performed less well during the competitions. The results are interpreted to indicate that optimism presents an important factor for predicting achievement in sports.     

Evaluation of the Latin American version of the Life Orientation Test-Revised

The Life Orientation Test (LOT-R) is the most intensively used instrument for the assessment of optimism, but empirical evidence of its psychometric quality in Latin America is lacking. The aim of this study was to test psychometric properties of this questionnaire based on a representative sample of the general population of Colombia (N = 1,500). Confirmatory factor analyses confirmed the bi-dimensionality of the questionnaire with two factors, namely Optimism and Pessimism. The sum scores of the optimism and pessimism subscale correlated with r = ?.12. Convergent validity aspects were studied by correlating LOT-R values with anxiety, depression, quality of life, fatigue, mental health, hopelessness, and self-efficacy. Optimism was more strongly correlated with these variables than pessimism. Normative data and mean values for both genders and different age groups are given. Generally, there were only small age and gender effects. Compared to the German norm data, the Colombian participants scored on average one scale point higher in the dimension of optimism. In summary, the LOT-R in its Spanish version is an appropriate and practical tool for screening purposes in individual diagnostics and epidemiological research in Latin American samples.     

采用理想点方法检验生活取向测验及其修订版的单维性

该文从项目反应过程出发,认为可能是由于原有的维度分析方法将生活取向测验（LOT）及其修订版（LOT-R）这两个测验的项目反应理想点过程错误地限定为优势过程,导致两个测验违背单维性的结论;进而采用主成分分析的未旋转成分负荷散点图和对应分析的维度分数散点图,并结合项目相关矩阵法验证LOT和LOT-R的维度。结果显示LOT-R的单维性得到了验证,LOT由于包含两个测量应对的项目而导致违背单维性。最后作者提出应该与理想点过程相一致的心理计量学模型对LOT-R的数据进行分析。     

Retrieval Selectivity in the Processing of Self-referent Information: Testing the Boundaries of Self-protection

The current research aimed to examine evidence for the construct validity of the three-factor model of social identity as measured by the three dimensional strength of group identification scale proposed by &;lt;citeref rid="b5"&;gt;Cameron (2004). The 12-item version of the three dimensional strength of group identification scale was used to collect data from an undergraduate sample (N = 219) to assess their social identification across three distinct group memberships. This data was subjected to confirmatory factor analysis to examine the fit of the three-factor model of social identity in comparison to fit indices for one- and two-factor models. The results indicate that the three-factor model is the most parsimonious and best fit to the data, providing empirical support for the hypothesized three-factor structure of social identity. In addition, the fact that different patterns of means and correlations emerged across groups emerged on the three dimensions, provides further evidence for a multidimensional model of social identification.     

Comparison of several shortened versions of the EMBU: exploratory and confirmatory factor analyses

The aim of the present study was to analyze the psychometric properties of different versions of the EMBU (Egna Minnen av Barndoms Uppfostran – My memories of upbringing) in a non-clinical sample of adolescents. The factor structure of the questionnaire was studied by means of more adequate exploratory and confirmatory factor procedures in order to ascertain which version achieves a better fit to data. The 64-item version of the EMBU was administered to a non-clinical sample of 832 adolescents. Exploratory and Confirmatory factor analyses were carried out for successive versions of 64, 37, 24 and 23 items. The theoretical four-factor structure of the 64-item version is not replicated in a factor analysis through principal axis extraction with direct oblimin rotation. The "Favoring Subject" factor was not found. 37 items present loadings equal to or larger than 0.30 for the "Rejection", "Emotional Warmth" and "Overprotection" factors. A re-analysis of these items shows a clear three-factor structure. When Arrindell et al .'s (1999 ) 23-item version was analysed, the three expected factors were also found. Confirmatory factor analyses allow us to reduce the 36-item version to a shorter one of 24 items. This last version achieves the best fit to data, including the 23-item version. The new 24-item version improves the construct validity of the EMBU and presents similar reliability coefficients.     

Modeling the Structure of the Attitudes and Belief Scale 2 using CFA and Bifactor Approaches: Toward the Development of an Abbreviated Version

The Attitudes and Belief Scale-2 (ABS-2: DiGiuseppe, Leaf, Exner, & Robin, 1988. The development of a measure of rational/irrational thinking. Paper presented at the World Congress of Behavior Therapy, Edinburg, Scotland.) is a 72-item self-report measure of evaluative rational and irrational beliefs widely used in Rational Emotive Behavior Therapy research contexts. However, little psychometric evidence exists regarding the measure's underlying factor structure. Furthermore, given the length of the ABS-2 there is a need for an abbreviated version that can be administered when there are time demands on the researcher, such as in clinical settings. This study sought to examine a series of theoretical models hypothesized to represent the latent structure of the ABS-2 within an alternative models framework using traditional confirmatory factor analysis as well as utilizing a bifactor modeling approach. Furthermore, this study also sought to develop a psychometrically sound abbreviated version of the ABS-2. Three hundred and thirteen (N = 313) active emergency service personnel completed the ABS-2. Results indicated that for each model, the application of bifactor modeling procedures improved model fit statistics, and a novel eight-factor intercorrelated solution was identified as the best fitting model of the ABS-2. However, the observed fit indices failed to satisfy commonly accepted standards. A 24-item abbreviated version was thus constructed and an intercorrelated eight-factor solution yielded satisfactory model fit statistics. Current results support the use of a bifactor modeling approach to determining the factor structure of the ABS-2. Furthermore, results provide empirical support for the psychometric properties of the newly developed abbreviated version.