Is Problematic Physical Activity (PPA) a Uni- or Multi-Dimensional Concept? A Bifactor Analysis of the Exercise Dependence Scale-Revised (EDS-R).

The study of exercise dependence, or as we prefer, problematic physical activity (PPA), faces both theoretical and methodological challenges. Different factorial solutions were obtained for the widely used Exercise Dependence Scale-Revised (EDS-R), leading us to question both its latent underlying construct and the interpretation of its factor solutions. Through confirmatory factor analysis (CFA) and the use of a bifactor model (BCFA), we assessed the dimensionality of a French version of the EDS-R. We recruited 745 students from Paris Nanterre University, but we removed 88 responses (16.8%) to retain only those who (a) engaged in a moderate to high levels of physical activity, according to the Global Physical Activity Questionnaire (GPAQ; N = 494; 9.5%), and (b) completed the EDS-R. We used a final sample of 435 students (58.4% of the total population) for a factorial analysis of the EDS-R. We conducted a three-step CFA in Mplus, producing three models: (a) unidimensional, (b) second-order, and (c) bi-factor (BCFA). The results of the BCFA indicated that most EDS-R items were better indicators of a general factor than their respective group factors, except for the second factor measuring a withdrawal construct. These results add to an ongoing debate in the field of behavioral addiction as to how to better conceptualize and measure exercise dependence or PPA. Withdrawal appears to have a special position in this debate, since our BCFA suggested that it is the only specific sub-dimension of the EDS-R scale.

Translation and validation of a Chinese version of the Appearance Schemas Inventory-Revised in Chinese adults.

The current study translated the Appearance Schemas Inventory-Revised (ASI-R) into Chinese (Mandarin) and examined its psychometric properties in Chinese adult women and men. Sample 1 included 400 women and 400 men to examine the factor structure of the ASI-R with exploratory factor analysis (EFA). Sample 2 involved 300 women and 300 men, and the EFA-derived factor structures in Sample 1 of the ASI-R were examined with exploratory structural equation modeling (ESEM), bifactor ESEM (B-ESEM), and bifactor ESEM with correlated uniqueness for negatively worded items (B-ESEM-CU) for both women and men. Results of the EFA identified a 4-factor model in women and a 2-factor model in men. The B-ESEM-CU consistently showed the best model fit. In the B-ESEM-CU, the general factor was well-defined, but the specific factors were not, supporting the use of the global factor to conceptualize the ASI-R for Chinese women and men. Evidence of adequate internal consistency, test-retest reliability, and construct validity of the global factor of the ASI-R was suggested in both women and men. Findings suggest the ASI-R is a useful instrument to measure body image investment in Chinese women and men, specifically using the B-ESEM-CU to understand the dimensionality of the ASI-R.

Towards a multidimensional measure of well-being: cross-cultural support through the Italian validation of the well-being profile.

BACKGROUND: The Well-being Profile (WB-Pro) is a multi-item and multidimensional instrument with strong psychometric properties and a solid theoretical grounding. It includes aspects of hedonic and eudaimonic well-being that can be used at the individual and social levels. METHOD: We developed the Italian version through back-translation procedures. The aim of this study is to validate the WB-Pro in Italian as well as to better understand its multidimensionality through bifactor analysis. A sample of 1451 participants (910 = women, 62.7%; age range: 18-70, M-age = 32.34, SD-age = 13.64) was involved. RESULTS: The 15-factor structure was confirmed with CFA and ESEM and was invariant across gender, age, and education. We examined convergent and discriminant validity and a bifactorial representation. Short versions of the WB-Pro were tested. DISCUSSION: Even though a few items of the Italian version of the WB-Pro might benefit from revision (e.g., clear-thinking scale), this study confirms the theoretical and empirical strength of the WB-Pro. CONCLUSIONS: This study supports the WB-Pro validity and usefulness in studying well-being and for professional psychological applications to assess well-being in both individuals and groups.

Exploring the structure and psychometric properties of the Warwick-Edinburgh Mental Well-Being Scale (WEMWBS) in a representative adult population sample.

This article reports the psychometric properties of both full and the abbreviated (Short) Warwick-Edinburgh Mental Well-being Scales (WEMWBS; SWEMWBS) in the Finnish general population. A large cross-sectional dataset (N = 5,335) was collected as part of the nationally representative FinHealth Study in 2017. Exploratory and confirmatory factor analyses of the data evaluated one-, two-, three-, and bi-factorial solutions with a split-half approach. McDonald's omega was used to assess internal consistency and convergent validity was evaluated using four established mental health and well-being scales (BDI-6, GHQ-12, MHI-5, EUROHIS-QOL8). Contrary to previous findings, our results supported a three-factor model of the full scale with separate, yet highly correlated, mental, social, and eudemonic well-being factors. For the SWEMWBS, the bi-factor model showed the best fit, with a strong general mental well-being factor and a weaker specific eudemonic well-being factor. In this sampling context, the social aspect of mental well-being may be considered a separable construct from other mental well-being dimensions and the shorter 7-item version might thus be a preferable option when assessing overall mental well-being.

Screening for Adolescent Risk Behaviors: Preliminary Evidence for a Family Functioning Tool.

BACKGROUND: Family functioning is associated with adolescent drug use, alcohol use, cigarette use, and sexual risk behaviors. Assessing adolescents for family functioning, commonly associated with multiple risk behaviors, may help identify adolescents at risk for adverse health outcomes. This study examined whether a latent family functioning construct, encompassing multiple dimensions of family functioning, was associated with adolescents' substance use and sexual risk behaviors. METHOD: This study used data harmonization with three intervention trials, including data from 1451 adolescents (M = 13.6, SD = 1.0), to perform a full-information item bifactor analysis on 46 family functioning items from five pre-existing family functioning measures. Regression analysis was used to examine the association between the identified subset of items and the following outcomes: cigarette use, alcohol use, drug use, and condom use. RESULTS: Bifactor analysis identified a 26-item latent family functioning construct. Regression analysis indicated that a 26-item latent family functioning construct was associated negatively with lifetime and past 90-day cigarette use, alcohol use, and drug use. CONCLUSION: In sum, the multi-dimensional latent family functioning construct may target specific barriers to risk screening in adolescent populations, including time constraint, hesitancy in discussing sensitive health topics, and use culturally appropriate and age-appropriate assessments.

A preliminary evaluation of the Supportive Other Experiences Questionnaire: integrating the perspectives of social support providers after traumatic injury.

BACKGROUND: Social support is a protective factor against the development of Posttraumatic Stress Disorder (PTSD). However, examinations of the social support after trauma have relied primarily on the self-reports of trauma survivors to the exclusion of their support providers. A new measure, the Supportive Other Experiences Questionnaire (SOEQ) was adapted from a well-established behavioral coding schema of support behaviors to capture social support experiences from the support provider perspective. METHOD: 513 Concerned Significant Others (CSOs) recruited on MTurk who had served as support providers to a traumatically injured romantic partner were recruited to respond to SOEQ candidate items and other relevant measures of psychopathology and relational factors. Factor analytic, correlational and regression analyses were conducted. RESULTS: Confirmatory factor analytic results of SOEQ candidate items provide evidence for three support types (i.e., informational, tangible, and emotional) and two support processes (i.e., frequency, difficulty), producing a final 11-item version of the SOEQ. Evidence of convergent and discriminant validity provide good psychometric support for the measure. Evidence of construct validity was derived from support for two hypotheses: (1) difficulty providing social support is negatively associated with CSO perceptions of trauma survivor recovery, (2) social support provision frequency is positively associated with relationship satisfaction. LIMITATIONS: Though factor loadings for support types were significant, several were small, limiting interpretability. Cross-validation in a separate sample is needed. CONCLUSIONS: The final version of the SOEQ demonstrated promising psychometric properties, and can provide key information one the experiences of CSOs as social support providers for trauma survivors.

Revisiting the vulnerable dark triad hypothesis using a bifactor model.

Miller et al. (2010) previously suggested that borderline pathology, vulnerable narcissism, and Factor 2 psychopathy share a common "Vulnerable Dark Triad" (VDT) core. The present study (N = 1,023 community participants) aims to test that hypothesis using exploratory and confirmatory bifactor analyses. We found support for a bifactor model that obtained satisfactory fits and other adequate validity indices, which included a general VDT factor and three group factors (Reckless, Entitled, Hiding). The general VDT factor was mostly saturated with borderline symptoms items reflecting self-hatred and worthlessness, which did not form a group factor; these results add to previous research suggesting that features of borderline pathology may represent the core of personality pathology. The three group factors had distinctive relationships with Dark Triad traits, pathological trait domains, and aggression. In contrast with the three group factors, the general VDT factor more strongly incremented the prediction of negative affectivity and hostility; the group factors more strongly incremented the prediction of grandiosity, egocentrism, callousness, Machiavellianism, and direct (physical/verbal) aggression. Alignment of the retained bifactor model with influent models of personality pathology and conceptual/methodological implications of the present results for research on the hypothesized VDT are discussed, as well as some clinical implications of the findings.

Psychometric properties of a Romanian translation of the Acceptance of Cosmetic Surgery Scale (ACSS): An examination using bifactor exploratory structural equation modelling.

The Acceptance of Cosmetic Surgery Scale (ACSS; Henderson-King & Henderson-King, 2005) is a widely used measure for the assessment of attitudes toward cosmetic surgery. Here, we examined the psychometrics of a novel Romanian translation of the ACSS. A total of 1275 Romanian adults (889 women, 386 men) completed the ACSS alongside additional, related measures. Exploratory factor analysis (EFA) with a first split-half subsample supported extraction of the original 3-factor model consisting of Intrapersonal, Social, and Consider dimensions. In a second split-half subsample, we found that a 3-factor bifactor exploratory structural equation model (B-ESEM) had superior fit compared to all alternative models that were tested. This B-ESEM representation had well-defined G-factor with adequate composite reliability, and its S-factors were also generally well-defined. Across subsamples, the optimal model showed strong or partial strong invariance across gender, with women having significantly higher latent means on the Consider factor relative to men. Evidence of convergent validity was also generally good in women, especially for the G-factor of the ACSS, but was attenuated in men. Overall, these findings indicate that the Romanian version of the ACSS has adequate psychometric properties. We also encourage scholars to consider B-ESEM representations of the ACSS in other national settings.

The Pandemic Anxiety Inventory: A validation study.

The Pandemic Anxiety Inventory (PAI) assesses anxiety symptoms individuals attribute to the presence of a pandemic. We conducted this study of 379 British adults during the COVID-19 pandemic and found that the PAI exhibited excellent reliability and solid criterion validity. Pandemic anxiety was associated with reduced social support, anticipated life changes, financial strain, job loss, economic insecurity, and the hospitalization or death of a close friend or relative. Using correlational and bifactor analyses, we found that the PAI demonstrated solid convergent and discriminant validity. The findings suggest that the PAI can be used in research and clinical practice.

Development and validation of the food cue responsivity scale.

Food cues are ubiquitous in today's environment; however, there is heterogeneity as to the extent to which these cues impact eating behavior among individuals. This study examines the validity and reliability of the Food Cue Responsivity Scale (FCRS) to assess responsivity to distinct types of food cues. Items gathered from existing measures were combined in the FCRS to reflect two subdomains, uncontrolled eating behavior and cognitive rumination. The criterion validity of the FCRS was established using a paradigm that assesses psychophysiological responsivity to a craved food among adults with overweight or obesity. Higher overall FCRS scores were associated with greater physiological responsivity to food exposures. These findings may help identify specific phenotypes of individuals with overweight or obesity with high responsivity to food cues, which could be used to understand overeating and response to weight-loss programs.

Evaluating real-patient learning in medical education - Hungarian validation of the Manchester Clinical Placement Index.

Introduction: The Manchester Clinical Placement Index (MCPI) is an instrument to measure medical undergraduates' real-patient learning in communities of practice both in hospital and in GP placements. Its suitability to evaluate the quality of placement learning environments has been validated in an English-language context; however, there is a lack of evidence for its applicability in other languages. Our aim was to thoroughly explore the factor structure and the key psychometric properties of the Hungarian language version. Methods: MCPI is an 8-item, mixed-method instrument which evaluates the quality of clinical placements as represented by the leadership, reception, supportiveness, facilities and organization of the placement (learning environment) as well as instruction, observation and feedback (training) on 7-point Likert scales with options for free-text comments on the strengths and weaknesses of the given placement on any of the items. We collected data online from medical students in their preclinical (1st, 2nd) as well as clinical years (4th, 5th) in a cross-sectional design in the academic years 2019-2020 and 2021-2022, by the end of their clinical placements. Our sample comprises data from 748 medical students. Exploratory and confirmatory factor analyses were performed, and higher-order factors were tested. Results: Although a bifactor model gave the best model fit (RMSEA = 0.024, CFI = 0.999, and TLI = 0.998), a high explained common variance (ECV = 0.82) and reliability coefficients (ωH = 0.87) for the general factor suggested that the Hungarian version of the MCPI could be considered unidimensional. Individual application of either of the subscales was not supported statistically due to their low reliabilities. Discussion: The Hungarian language version of MCPI proved to be a valid unidimensional instrument to measure the quality of undergraduate medical placements. The previously reported subscales were not robust enough, in the Hungarian context, to distinguish, statistically, the quality of learning environments from the training provided within those environments. This does not, however, preclude formative use of the subscales for quality improvement purposes.

What matters and influence resuscitation preference? Development, field testing, and structural validation of items among older patients in the emergency department.

BACKGROUND: Decisions about resuscitation preference is an essential part of patient-centered care but a prerequisite is having an idea about which questions to ask and understand how such questions may be clustered in dimensions. The European Resuscitation Council Guidelines 2021 encourages resuscitation shared decision making in emergency care treatment plans and needs and experiences of people approaching end-of-life have been characterized within the physical, psychological, social, and spiritual dimensions. We aimed to develop, test, and validate the dimensionality of items that may influence resuscitation preference in older Emergency Department (ED) patients. METHODS: A 36-item questionnaire was designed based on qualitative interviews exploring what matters and what may influence resuscitation preference and existing literature. Items were organized in physical, psychological, social, and spiritual dimensions. Initial pilot-testing to assess content validity included ten older community-dwelling persons. Field-testing, confirmatory factor analysis and post-hoc bifactor analysis was performed on 269 older ED patients. Several model fit indexes and reliability coefficients (explained common variance (ECV) and omega values) were computed to evaluate structural validity, dimensionality, and model-based reliability. RESULTS: Items were reduced from 36 to 26 in field testing. Items concerning religious beliefs from the spiritual dimension were misunderstood and deemed unimportant by older ED patients. Remaining items concerned physical functioning in daily living, coping, self-control in life, optimism, overall mood, quality of life and social participation in life. Confirmatory factor analysis displayed poor fit, whereas post-hoc bifactor analysis displayed satisfactory goodness of fit (χ2 =562.335 (p<0.001); root mean square error of approximation=0.063 (90% CI [0.055;0.070])). The self-assessed independence may be the bifactor explaining what matters to older ED patients' resuscitation preference. CONCLUSIONS: We developed a questionnaire and investigated the dimensionality of what matters and may influence resuscitation preference among older ED patients. We could not confirm a spiritual dimension. Also, in bifactor analysis the expected dimensions were overruled by an overall explanatory general factor suggesting independence to be of particular importance for clinicians practicing resuscitation discussions in EDs. Studies to investigate how independence may relate to patients' choice of resuscitation preference are needed.

Psychometric properties of a Greek translation of the Intuitive Eating Scale-2 (IES-2) in adults from Cyprus.

The construct of intuitive eating is commonly assessed using the 23-item, 4-factor Intuitive Eating Scale-2 (IES-2; Tylka & Kroon Van Diest, 2013). In this study, we assessed the psychometric properties of a novel Greek translation of the IES-2 in adults from Cyprus. In Study 1 (N = 626), an exploratory factor analysis indicated that the IES-2 should be conceptualized as consisting of six factors that showed complete invariance across women and men. Study 2 (N = 793), using exploratory structural equation modelling (ESEM) and beifactor analysis (B-ESEM), indicated that the 6-factor B-ESEM model had adequate fit and evidenced complete invariance across sex once the correlated uniqueness of negatively worded IES-2 items was accounted for. This final model evidenced adequate composite reliability, and a global G-factor evidenced adequate convergent, concurrent, and discriminant validity. In contrast, the IES-2 S-factors showed more equivocal patterns of validity, with some S-factors showing less-than-adequate associations with body image variables, self-esteem, symptoms of disordered eating, and fruit and vegetable intake. In general, these results provide satisfactory evidence of the psychometric properties of the Greek IES-2 in adults from Cyprus, but also suggest that models of IES-2 scores may vary across national or cultural contexts.

Colombian Adaptation of the Self-Compassion Scale (SCS) / Adaptación Colombiana de la Escala de Autocompasión (EAC)

Background: Self-Compassion is crucial for assessing how people relate to their suffering in moments of personal difficulty. The objective of this study was to check the psychometric properties of the Self-Compassion Scale (SCS) in a Colombian sample. Method: The Spanish version of the SCS was adapted to the Colombian context via a content validity technique. This version was administered to 751 Colombians from the general community. Psychometric analysis was performed using R studio packages. Results: 7 models were tested, the best fit was found for the bifactor ESEM model (χ2/df = 0.86, CFI = 1, TLI= 1, RMSEA= 0.00, SRMR= 0.01). This model produced optimal reliability indices (ωh = 0.83, FD= 0.93, H= 0.96). Conclusions: The study produced initial psychometric evidence of the structure of the SCS in Colombia, with evidence of a general factor in the bifactor ESEM model. More research is needed to justify the complete usage of the SCS in the country.(AU)

Adaptación Colombiana de la Escala de Autocompasión (EAC). Antecedentes: La Autocompasión es un concepto clave para evaluar la forma en que las personas se relacionan con su sufrimiento en momentos de dificultad personal. El objetivo de este estudio fue verificar las propiedades psicométricas de la Escala de Autocompasión (EAC) en una muestra colombiana. Método: Se adaptó la versión en español de la SCS al contexto colombiano a través de una técnica de validez de contenido. Esta versión fue administrada a 751 colombianos de la comunidad en general. Los análisis psicométricos se realizaron usando diferentes paquetes de R Studio. Resultados: 7 modelos fueron probados, el que mejor ajustó fue el modelo bifactor ESEM (χ2/df = 0.86, CFI = 1, TLI= 1.00, RMSEA= 0.000, SRMR= 0.01). Este modelo obtuvo índices de confiabilidad adecuados (ωh = 0.83, FD= 0.93, H= 0.96). Conclusiones: Se logró obtener una evidencia psicométrica inicial de la estructura del EAC en Colombia, en la cual se obtuvieron pruebas de la existencia de un factor general en el modelo ESEM bifactorial. Es necesario hacer más investigación para justificar completamente el uso del SCS en el país.(AU)

Measuring Strengths, Opportunities, Aspirations, and Results: Psychometric Properties of the 12-Item SOAR Scale.

Strengths, Opportunities, Aspirations, and Results (SOAR) is a strengths-based framework for strategic thinking, planning, conversations, and leading that focuses on strengths, opportunities, aspirations, and results. The SOAR framework leverages and integrates Appreciative Inquiry (AI) to create a transformation process through generative questions and positive framing. While SOAR has been used by practitioners since 2000 as a framework for generating positive organizational change, its use in empirical research has been limited by the absence of reliable and valid measures. We report on the reliability, construct validity, and measurement invariance of the SOAR Scale, a 12-item self-report survey organized into four first-order factors (Strengths, Opportunities, Aspirations, and Results). Data from a sample of 285 U.S. professionals were analyzed in Mplus using confirmatory factor analysis and exploratory structural equation modeling. The Four-Factor first-order exploratory structure equation modeling (ESEM) had the best model fit. Measurement invariance tests found the scalar invariance of the SOAR Scale across gender and education groups. Implications are discussed for using the SOAR Scale to build resilience at the individual, the team, and the organizational levels.

"I Think You Are Trustworthy, Need I Say More?" The Factor Structure and Practicalities of Trustworthiness Assessment.

Two popular models of trustworthiness have garnered support over the years. One has postulated three aspects of trustworthiness as state-based antecedents to trust. Another has been interpreted to comprise two aspects of trustworthiness. Empirical data shows support for both models, and debate remains as to the theoretical and practical reasons researchers may adopt one model over the other. The present research aimed to consider this debate by investigating the factor structure of trustworthiness. Taking items from two scales commonly employed to assess trustworthiness, we leveraged structural equation modeling to explore which theoretical model is supported by the data in an organizational trust context. We considered an array of first-order, second-order, and bifactor models. The best-fitting model was a bifactor model comprising one general trustworthiness factor and ability, benevolence, and integrity grouping factors. This model was determined to be essentially unidimensional, though this is qualified by the finding that the grouping variables accounted for significant variance with for several organizational outcome criteria. These results suggest that respondents typically employ a general factor when responding to items assessing trustworthiness, and researchers may be better served treating the construct as unidimensional or engaging in scale parceling of their models to reflect this response tendency more accurately. However, the substantial variance accounted by the grouping variables in hierarchical regression suggest there may be contexts in which it would be acceptable to consider the theoretical factors of ability, benevolence, and integrity independent of general trustworthiness.

Occupational depression in a Spanish-speaking sample: associations with cognitive performance and work-life characteristics / Depresión ocupacional en una muestra hispanohablante: asociaciones con el rendimiento cognitivo y características de la vida laboral

This 386-participant study investigated the structural and psychometric properties of the Spanish version of the Occupational Depression Inventory (ODI). Exploratory structural equation modeling bifactor analysis revealed that the ODI meets the requirements for essential unidimensionality. Measurement invariance held across our sample and the English- and French-speaking samples used in the ODI's initial validation study. Mokken scale analysis indicated that (a) the scalability of the instrument was strong, (b) no violations of monotonicity or local independence were present, and (c) invariant item ordering was sufficiently accurate. The ODI's reliability was optimal. The ODI exhibited both convergent validity and discriminant validity vis-à-vis a job-unrelated measure of depression. Furthermore, occupational depression correlated substantially, and in the expected direction, with objective cognitive performance and 10 widely studied work-life characteristics. This study suggests that the ODI's Spanish version has excellent structural and psychometric properties and can be confidently employed by occupational health specialists.(AU)

El presente estudio, realizado con 386 participantes, ha indagado en las propiedades estructurales y psicométricas de la versión española del Inventario de Depresión Ocupacional (ODI, según sus siglas en inglés). Un análisis bifactorial de un modelo exploratorio de ecuaciones estructurales mostró que el ODI reúne los requisitos de unidimensionalidad esencial. La invarianza de la medida se mantuvo en nuestra muestra y en las muestras anglo y francoparlantes utilizadas en el estudio de validación inicial. Un análisis Mokken de la escala indica que: a) el instrumento tenía un fuerte carácter escalar, b) no hubo violación de la monotonicidad o independencia local y c) el orden invariante de los ítems fue lo suficientemente preciso. La fiabilidad ha sido óptima. El ODI presentó tanto validez convergente como discriminante en relación con una medida de depresión no relacionada con el trabajo. Además, la depresión laboral correlacionó en gran medida, en la dirección esperada, con el desempeño cognitivo objetivo y 10 características muy estudiadas de la vida laboral. El estudio destaca que la versión española del ODI tiene unas propiedades estructurales y psicométricas excelentes, por lo que puede utilizarse con toda confianza por los especialistas en salud ocupacional.(AU)

An Examination of the Factor Structure of the Multidimensional Psychological Flexibility Inventory.

The Multidimensional Psychological Flexibility Inventory (MPFI), a 60-item self-report measure, assesses the Acceptance and Commitment Therapy Hexaflex. The factor structure of the MPFI was examined in this study. In a community sample of adults (N = 827), four models (correlated six-factor, one-factor, higher order, and bifactor) were tested for each of the constructs of interest (i.e., psychological flexibility and psychological inflexibility). All models, with the exception of the one-factor, provided adequate fit to the data. Differences between the three adequate fitting models were trivial in magnitude. Additional statistical indices from the bifactor models indicated that the general factors accounted for the large majority of reliable variance. The majority of the domain-specific factors evidenced redundancy with their respective general factors. Results from a series of structural regressions indicated that the domain-specific factors did not provide additional incremental utility above and beyond the general factors in predicting two relevant clinical constructs (i.e., health anxiety and depression). These results provide support for the use of the MPFI Flexibility and Inflexibility total scores, but not subscale scores. The MPFI may require further refinement to either greatly reduce the length of the measure, or to ensure that subscales have incremental utility.

Examining the Structure and Validity of Self-Report Measures of DSM-5 Alternative Model for Personality Disorders Criterion A.

The Level of Personality Functioning Scale (LPFS) operationalizes Criterion A of the DSM-5 Alternative Model for Personality Disorders. Despite progress in LPFS measurement development and validation, there is a lack of research, and some disagreement, concerning structural, convergent, and incremental validity of LPFS self-report measures. The present study aimed to compare the LPFS Self-Report, LPFS Self-Report of Criterion A, and LPFS Brief Form. Internal structure was assessed through principal component analyses, factor analyses, and bifactor analyses of unidimensionality. Associations with both pathological and basic personality characteristics among the LPFS measures were explored. Incremental validity of LPFS severity in predicting pathological personality outcomes controlling for basic personality traits, and the reverse, were examined. Results suggest a unidimensional structure robustly associated with other pathological personality assessments. LPFS severity and basic personality traits mutually offered unique explanatory power. We discuss the implications of assessing personality pathology using LPFS self-report measures.

The intuitive eating scale-2: re-evaluating its factor structure using a bifactor exploratory structural equation modelling framework.

PURPOSE: Previous studies examining the appropriateness of the 4-factor model of intuitive eating scale-2 (IES-2) scores have returned equivocal results, which may reflect methodological limitations in the way IES-2 scores are modelled. Here, we applied a bifactor-exploratory structural equation modelling (B-ESEM) framework to better understand IES-2 multidimensionality. METHODS: A total of 603 participants from the United States completed the IES-2, alongside measures of body appreciation, body acceptance from others, and self-esteem. Our analyses compared the fit of various hypothesised models of IES-2 scores. RESULTS: Models of IES-2 scores based on confirmatory factor analysis (CFA) uniformly showed poor fit. ESEM models showed superior fit to CFA representations and a B-ESEM model showed improved fit over higher-order CFA and B-CFA representations of IES-2 scores. The optimal model was a B-ESEM model that accounted for, through correlated uniqueness (CU), the methodological artefact introduced by negatively-worded IES-2 items. This B-ESEM-CU model was fully invariant across gender and showed adequate construct validity. CONCLUSION: The B-ESEM-CU framework appears well-suited to understand the multidimensionality of IES-2 scores. A model of IES-2 scores that yields a reliable latent indicator of global intuitive eating while allowing for simultaneous consideration of additional specific factors will likely provide more accurate accounting of the nature and outcomes of intuitive eating. LEVEL OF EVIDENCE: Level III, cohort study.