Terms Of Construct Validity Research Articles

Psychometric properties of the Self-Beliefs related to Social Anxiety (SBSA) scale in a sample of individuals with social anxiety disorder

The Self-Beliefs related to Social Anxiety (SBSA) scale assesses maladaptive social-evaluative beliefs, a key aspect in models of social anxiety disorder (SAD) that is frequently measured in research and clinical contexts. The SBSA has been evaluated psychometrically in student samples, but not in a large sample of individuals diagnosed with SAD. The current study tested the psychometric properties of the SBSA in a sample of individuals with SAD pooled from several studies (total N = 284). Results showed that the optimal factor structure for the SBSA was a correlated three-factor model (high standard beliefs factor, conditional beliefs factor, unconditional beliefs factor). The SBSA total and its subscales (formed based on the factors) exhibited good internal consistency. In terms of construct validity, the SBSA total, the high standard beliefs subscale, and conditional beliefs subscale had stronger associations with a measure of social anxiety than with a measure of depression, although the unconditional beliefs subscale was similarly related to both measures of social anxiety and depression. In terms of discriminative validity, the sample of individuals with SAD had higher SBSA total and subscale scores compared with a sample of individuals without SAD (N = 32). These findings provide a psychometric evidence base justifying the use of the SBSA for the assessment of maladaptive social-evaluative beliefs.

A Comprehensive Resiliency Framework: Theoretical Model, Treatment, and Evaluation.

There is heterogeneity in conceptualizations of resiliency, and there is, to date, no established theoretically driven resiliency assessment measure that aligns with a targeted resiliency intervention. We operationalize resiliency as one's ability to maintain adaptive functioning in response to the ongoing, chronic stress of daily living, and we use a novel resiliency measure that assesses the target components of an evidence based resiliency intervention. We present our resiliency theory, treatment model, and corresponding assessment measure (Current Experience Scale; CES). To establish the psychometric properties of the CES, we report the factor structure and internal consistency reliability (N = 273). Among participants in our resiliency intervention (N = 151), we explored construct validity in terms of associations with theoretical model constructs, a validated resiliency measure, and sensitivity to change from before to after the intervention. Results indicated that a 23-item, 6-factor solution was a good fit to the data (RMSEA = .08, CFI = .97; TLI =.96) and internal consistency was good (α = .81 to .95). The CES showed correlations in the expected direction with resiliency model constructs (all p's < .001) and significant post intervention improvements. Our resiliency theory, treatment model, and outcome appear aligned; the CES demonstrated promise as a psychometrically sound outcome measure for our resiliency intervention and may be used in future longitudinal studies and resiliency building interventions to assess individuals' resiliency to adapt to ongoing stress.

Adaptation and Validation of Conners-3 Teacher and Parent Rating Scales on Lebanese Children

Conners-3 rating scale is primarily used in the assessment of ADHD and it has been found to be instrumental in variety of areas such as screening, assessment, and treatment monitoring. Most, if not all, rating scales are developed on western standards and available in different languages especially, English. For this reason, we adapted the Conners-3 teacher and parent rating scales since we are ethically responsible to have a rating scale that assess ADHD and takes into consideration the linguistic and cultural differences among the Lebanese population. Conners-3 aims to measure ADHD and most common comorbid problems in children and adolescents. The purpose of this study was to adapt and validate the Conners-3 teacher and parent rating scales to the Lebanese context. The International Test Commission (ITC) guidelines were used for translating the rating scales, and then they were reviewed by professionals, piloted, revised, and then administered. The sample consisted of students enrolled in grades 1 through 12 from nine schools. Their parents (455) and 108 teachers of (509) students filled the respective Conners-3 rating scales. The reliability and validity of the scales was investigated by examining the internal consistency and test-retest reliabilities, construct validity in terms of gender and age differences, discriminant validity between ADHD and non-ADHD groups, and Exploratory Factor Analysis. The reliability coefficients and discriminant validity were moderate to high. Age and gender differences were not well defined, and the obtained factor structure partially resembled that of the original Conners-3. Norms in terms of T scores and percentiles were reported. Results were discussed and limitations and recommendations for the future studies were proposed.

Quick Assessment of Web Content Perceptions

ABSTRACT In digital media and on the World Wide Web, content is king. As such, users’ subjective perceptions of content can influence a variety of their evaluations, thereby altering their attitudes and behavioral outcomes. Thus, users’ content perceptions need to be assessed using a valid measure, but this often has to be done while keeping the survey time as short as possible. For these situations, we created a four-item short version of the Web-CLIC questionnaire. We tested this version, called the Web-CLIC-S, in a series of three studies, including 1,414 participants and 33 fully functional websites of different content domains. Confirmatory factor analysis confirms that the Web-CLIC-S reflects an unidimensional g-factor of subjective web content. The Web-CLIC-S also demonstrates high internal consistencies and high short- to medium-term retest reliabilities. Furthermore, we find strong evidence for construct validity in terms of convergent, divergent, discriminative, concurrent, incremental, and predictive validity. In a fourth study, encompassing 12,568 ratings on 183 websites, we provide benchmarks for 12 different content domains and optimal cut points. Overall, the present research suggests that the Web-CLIC-S can serve as a sound screening tool to assess users’ subjective perception of content in research and practice settings.

Factorial validity of the Urdu version of the Obsession with COVID-19 Scale: Preliminary investigation using a university sample in Pakistan

The psychological toll of the COVID-19 pandemic is being felt by people around the world. Persistent and disturbed thinking about the disease appears to be contributing to this mental health concern. Although the Obsession with COVID-19 Scale (OCS) has been shown to be a reliable and valid instrument in the U.S., it has not been examined with in Pakistan. The current study addressed this problem by examining the validity of an Urdu translated version of the OCS using online survey data from 240 university students and teachers in Pakistan. The results showed that the OCS exhibited factorial validity, as well as measurement invariance for gender. However, the OCS also showed limited evidence of construct validity in terms of showing weak positive correlations with the total scale and social dysfunction and self-confidence subscales of the General Heath Questionnaire and no correlation with the depression and anxiety subscale (GHQ-12). These findings suggest that further research is necessary before the Urdu version of the OCS is widely adopted in Pakistan.

Does the single-item self-rated health measure the same thing across different wordings? Construct validity study

PurposeThe self-rated health (SRH) item is frequently used in health surveys but variations of its form (wording, response options) may hinder comparisons between versions over time or across surveys. The objectives were to determine (a) whether three SRH forms are equivalent, (b) the form with the best construct validity and (c) the best coding scheme to maximize equivalence across forms.MethodsWe used data from 58,023 respondents of the Swiss Health Survey. Three SRH forms were used. Response options varied across forms and we explored four coding schemes (two considering SRH as continuous, two as dichotomous). Construct validity of the SRH was assessed using 34 health predictors to estimate the explained variance.ResultsDistributions of response options were similar across SRH forms, except for the “good” and “very good” options (“good” in form 1: 58.6%, form 2: 65.0% and form 3: 44.1%). Explained variances differed across SRH forms, with form 3 providing the best overall explained variance, regardless of coding schemes. The linear coding scheme maximised the equivalence across SRH forms.ConclusionThe three SRH forms were not equivalent in terms of construct validity. Studies examining the evolution of SRH over time with surveys using different forms should use the linear coding scheme to maximise equivalence between SRH forms.

Transcultural adaptation and validation of a Korean version of the Oxford Ankle Foot Questionnaire for children

BackgroundThe purpose of this study was to translate and transculturally adapt the original English version of the Oxford Ankle Foot Questionnaire (OAFQ) into a Korean version, and to evaluate its psychometric properties.MethodsA Korean OAFQ for children was developed according to established guidelines. To test validity, 169 consecutive patients with foot and ankle problems and their caregivers each completed the OAFQ. The children also completed a Korean version of the KIDSCREEN-52 health related quality of life questionnaire (KIDSCREEN-52 HRQOL). To validate the Korean version of the OAFQ, reliability (child–parent agreement and internal consistency), feasibility (floor and ceiling effects), and construct validity were evaluated, and factor analysis was performed.ResultsIn terms of reliability, Cronbach’s α values were > 0.7 in all subscales of the OAFQ (0.765 to 0.901). Child–parent agreement was confirmed by high intraclass correlation coefficients for all subscales (0.791 to 0.863). In terms of construct validity, there were moderate correlations between the subscales of the OAFQ and the subscales of the KIDSCREEN-52 HRQOL. Factor analysis revealed a three-component solution for both the child/adolescent and parent-proxy version, by combining the school and play, and footwear items into one subscale. In terms of feasibility, no floor effects were found for all subscales. However, ceiling effects were observed for the school and play, and emotional subscales for child/adolescent and parent-proxy versions.ConclusionsThe OAFQ was successfully translated and transculturally adapted into the Korean language; the Korean version of the OAFQ represents a reliable and valid instrument for evaluating children’s foot or ankle problems. However, factor analysis suggested the use of a three-subscale questionnaire.

Assessing L2 listening at a Japanese university: Effects of input type and response format

Large-scale and classroom-based tests of L2 listening comprehension typically employ audio-only listening texts and a multiple-choice response format. However, the effect of these test task characteristics on test-taker performance remains elusive, and begs the question as to whether they are the best option in terms of construct validity. Furthermore, the interaction between these test task characteristics and their potential joint effect on performance has not been sufficiently explored. To address this gap, a study was conducted at a Japanese university which investigated the effect of input type (audio-only vs. video) and response format (multiple-choice vs. short answer) on L2 listening test performance. Participants were divided into four groups to take an academic listening test with one of four combinations of input and response format: (1) audio-only with multiple-choice questions; (2) video with multiple-choice questions; (3) audio-only with short answer questions; and (4) video with short answer questions. Results of a 2 x 2 factorial ANOVA revealed a statistically significant effect of response format on test-taker performance. No significant effect for input type was found and no significant interaction among the variables was detected. Results suggest that visual input and audiovisual literacy need to be more clearly articulated within the construct definition of academic listening, if they are to be included at all.

Evaluation of the Psychometric Properties of a Version of the London Measure of Unplanned Pregnancy for Women’s Partners

Background The role of women’s partners in pregnancy planning has gained importance with the development of preconception care. The measurement of pregnancy planning/intention has also changed in the last two decades with the development of psychometric measures such as the London Measure of Unplanned Pregnancy (LMUP). This analysis aimed to evaluate the psychometric properties of a version of the LMUP for women’s partners in the UK. Methods The LMUP items, adapted for completion by partners, were piloted and included in a survey of (mainly male) partners in three antenatal clinics in London, UK, as part of a study of pre-pregnancy health and care. The psychometric properties of the partner LMUP were assessed according to the principles of Classical Test Theory. Results There were 575 partners of pregnant women in the sample, 573 (99.7%) being men. There were high completion rates for all the LMUP items. The distribution of LMUP scores ranged from 1–12, with a negative skew (biased towards planned/intended pregnancies). In terms of reliability (internal consistency), Cronbach’s alpha was 0.69, item-rest correlations were &gt;0.2 for five items, and all inter-item correlations were positive. In terms of construct validity, principal components analysis showed that measurement was unidimensional, confirmatory factor analysis showed good model fit, and the convergent validity hypothesis of non-perfect, moderate-to-good agreement between couples’ LMUP scores was met. Conclusions The partner LMUP performed well in terms of reliability and validity according to internationally-accepted criteria for the performance of psychometric measures and can be used in future research on men and couples. However, we recommend further research relating to the concept of pregnancy planning/intention among partners of all gender identities to understand whether additional content would enhance the measurement of the construct. In particular, we recommend further conceptual exploration with men who have experienced unplanned pregnancies.

Development of the Cross-Cultural Academic Integrity Questionnaire - Version 3 (CCAIQ-3)

Establishing a reliable and valid measure of academic integrity that can be used in higher education institutions across the world is a challenging and ambitious task. However, solving this issue will likely have major ramifications for understanding dishonest action. It also enables the development of a standardised measure that can be used to assess the efficacy of interventions aimed at enhancing academic integrity that can be administered across regional boundaries and diverse cultural groups. This study has used a combination of confirmatory factor analysis and item distribution inspection procedures to further validate the cross-cultural academic integrity questionnaire version 2 (CCAIQ-2). Primary participants in this study were from Saudi Arabia (n = 338), and secondary reference participants were from New Zealand (n = 366). The findings indicate that a revised 10-item questionnaire, the cross-cultural academic integrity questionnaire version 3 (CCAIQ-3), has better credibility in terms of construct validity than its predecessor. Three CCAIQ-3 domains are proposed: copying, cheating, and complying. This research will inevitably create further academic and international debate; however this measure is likely to be useful in terms of creating a research protocol for evaluating and measuring cross-cultural issues and interventions aimed at promoting academic integrity.

Conceptual model for intensive care nurse work well-being: A qualitative secondary analysis.

There had been little focus on the well-being of intensive care nurses until a recent programme of research found work well-being to be best described as a collection of elements, a multifaceted construct. Strengtheners of intensive care nurses' work well-being were found to extend across individual, relational, and organizational resources. Actions such as simplifying their lives, giving and receiving team support, and accessing employee assistance programmes were just a few of the intensive care nurses' identified strengtheners. To synthesize intensive care nurse perceptions of work well-being characteristics and strengtheners to identify opportunities for job crafting and redesign. This was a qualitative secondary analysis. Intensive care nurse work well-being characteristics and strengtheners were explored using applied thematic analysis and pre-design, open card-sort technique. Five facets were identified in the analysis: (a) healthy, (b) authentic, (c) meaningful, (d) connected, and (e) innovative. These five facets were described from a theoretical perspective and illustrated as a conceptual model for intensive care nurse job crafting and redesign. The proposed conceptual model contributes new knowledge to be explored in meaningful discussions about intensive care nurse work well-being and empirically investigated in terms of construct validity and theory development. Furthermore, the model provides practical opportunities to explore individual and collaborative ways to enhance intensive care nurse work well-being across a range of levels. Opportunities for job crafting and redesign were identified and presented in a conceptual model of intensive care nurse work well-being. This model provides individual nurses, intensive care teams, health care organizations, and workers' well-being programme and policy developers practical opportunities to explore individual and collaborative ways to enhance intensive care nurse work well-being.

Development and validation of a scale for measuring Multiple Motives toward Environmental Protection (MEPS)

The current study aimed to establish and validate the Multi-motives toward Environmental Protection Scale (MEPS) to assess the various reasons that motivate individuals to engage in environmental behaviors. The scale development process included four steps: extensive literature review on environmental incentives, generation of an item pool, evaluation of the initial item pool by a panel of experts, and administration of the final item pool to a population sample to test the psychometric properties of the scale. We collected five distinct samples to: (1) explore the factorial structure of the MEPS using Exploratory Factor Analysis (Study 1); (2) confirm the proposed structure using Confirmatory Factor Analysis and assess reliability and validity (Studies 2 and 3); (3) examine test-retest reliability (Study 4); and (4) evaluate the MEPS in a representative sample (Study 5). The overall findings supported a seven-factor structure for the 28-item MEPS, revealed good scale reliability and provided evidence of construct validity in terms of discriminant and convergent validity. The scale exhibited criterion-related validity as suggested by the correlations observed between each MEPS subscale and other outcome variables. Results showed that configural, measurement and latent mean invariance were established across gender groups. The MEPS comprises a comprehensive instrument that makes a significant contribution to the motivation literature within the environmental conservation context. The proposed measure gives rise to future research in the environmental psychology field and may inform behavior change strategies by policymakers that wish to promote environmental behavior.

Psychometrische Evaluation und Normwerte einer Ultrakurzform der Sense of Coherence Scale “SOC-3”

Sense of coherence is a psychological resource which contributes substantially to an individual's ability to cope well with stressful situations. In the present study we investigate an ultra-short form of the Sense of Coherence Scale (SOC-3) in a representative sample of the German general population (N=2.018). The 3-item model evinced excellent model fit qualities and acceptable reliability. We present evidence for partial strict invariance across sex and age groups. In terms of construct validity, our analyses demonstrate strong overlap between the SOC-3 and two longer versions (-9 and -29). In addition, correlations to related constructs such as attachment styles, physical and mental health, as well as quality of life were similar between the SOC versions. For the first time, normative values for the German population are presented to allow for the classification of individual scores. We recommend the SOC-3 as a screener for applied sciences and for large-scale surveys in particular.

Validation and Normative Data for the Modified Telephone Interview for Cognitive Status: The Sydney Memory and Ageing Study.

Telephone-based cognitive screens, such as the Telephone Interview for Cognitive Status (TICS), can potentially reduce the barriers and costs of assessing older adults. However, validation of clinically relevant psychometric properties is lacking in a large and comprehensively assessed sample of older adults. Furthermore, published normative data may lack sensitivity as they have not used regression-based demographic corrections or accounted for cases with subsequent dementia. We address these gaps using the modified TICS (TICS-M; a modified, 13-item, 39-point version) and provide an online norms calculator for clinicians and researchers. Prospective longitudinal study. Sydney, Australia. A total of 617 community-living older adults, aged from 71 to 91 years. The measures used included the TICS-M, the Mini-Mental State Examination (MMSE), Addenbrooke's Cognitive Examination-Revised (ACE-R), and a comprehensive neuropsychological test battery. Descriptive statistics, correlations, area under the curve, and regression analyses were used to determine the validity and normative properties of the TICS-M. TICS-M total scores (mean = 24.20; SD = 3.76) correlated well with the MMSE (0.70) and ACE-R (0.80) and moderately with neuropsychological tests tested noncontemporaneously. A cutoff score of 21 or lower reliably distinguished between those with and without incident dementia after 1 year (sensitivity = 77%; specificity = 88%) but was less reliable at distinguishing mild cognitive impairment from normal cognition. TICS-M scores decreased with age and increased with higher education levels. The robust normative sample, which excluded incident dementia cases, scored higher on the TICS-M and with less variability than the whole sample. An online calculator is provided to compute regression-based norms and reliable change statistics. In a large sample of community-dwelling older adults, the TICS-M performed well in terms of construct validity against typical screening tools and neuropsychological measures and diagnostic validity for incident dementia. The comprehensive, regression-based, and robust normative data provided will help improve the sensitivity, accessibility, and cost-effectiveness of cognitive testing with older adults. J Am Geriatr Soc 67:2108-2115, 2019.

Validity and reliability of the Swedish versions of the short-form Child Perceptions Questionnaire 11–14 and Parental Perceptions Questionnaire

Objective: To examine the validity and reliability of the Swedish versions of the short-form Child Perceptions Questionnaire 11–14 (CPQ11–14) and Parental Perceptions Questionnaire (P-CPQ) for measuring children’s oral health-related quality of life (OHRQoL).Material and methods: The sample comprised 247 children and parents. OHRQoL was assessed by asking each child and their accompanying parent to complete the relevant questionnaire. To allow test–retest analysis, 30 children and 32 parents were asked to complete the instrument a second time within 2–4 weeks.Results: In terms of construct validity, significant correlations were observed between CPQ scale scores and the global ratings of oral health and overall well-being for both the CPQ11–14 and the P-CPQ. Regarding internal consistency, Cronbach’s alphas for the total scales were 0.81 and 0.77, respectively, indicating good reliability, and internal consistency for the subscales (two or four dimensions) was acceptable. Test–retest reliability was good for the CPQ11–14 total scale (ICC 0.77) and acceptable for the P-CPQ total scale (ICC 0.63).Conclusions: The Swedish versions of the short-form CPQ11–14 and P-CPQ are both valid and reliable, and can be recommended for use among Swedish children aged 11–14 years for evaluation of OHRQoL.

성인의 음주규범과 음주동기 척도개발을 위한 예비연구

Objectives: This study aimed to develop a tool capable of identifying drinking norms and motives in Korean adult drinkers. Methods: Adults aged between 19 and 59 years who answered that their drinking frequency was more than once a month during the past year were selected in 2018 among a panel of subjects enrolled in existing domestic survey companies. Sample size and methods used for analysis were determined by considering demographically proportioned stratified sampling and monthly alcohol drinking rate. A total of 3,000 subjects responded to questionnaires. Results: Exploratory and confirmatory factor analyses were conducted using SPSS and AMOS, version 23.0. The developed tool was found to be acceptable in terms of construct validity and modeling suitability. Drinking norms and each drinking motive were related to a distinct pattern of contextual antecedents and drinking-related outcomes (e.g., frequency, quantity of drinking, and drinking-related problems). The questionnaire was comprised of six items related to drinking norms and 12 items on drinking motives. Drinking motives were organized in three sub-scales: individual (6 items), social (2 items), and environmental (4 items). Conclusion: Results supported both the conceptual validity of the hypothesized model and the applicability of this assessmenttool for research purposes across a wide range of populations.

Construct validity of the Visual Cognitive Assessment Test (VCAT)-a cross-cultural language-neutral cognitive screening tool.

The Visual Cognitive Assessment Test (VCAT) is a language-neutral cognitive screening tool designed for use in culturally diverse populations without the need for translations or adaptations. While it has been established to be language-neutral, the VCAT's construct validity has not been investigated. 471 participants were recruited, comprising 233 healthy comparisons, 117 mild cognitive impairment (MCI), and 121 mild Alzheimer's disease (AD) patients. VCAT and domain-specific neuropsychological tests were administered in the same sitting. Construct validity was assessed by analyzing domain-specific associations between the VCAT and well-established cognitive assessments. Reliability (internal consistency) was measured by Cronbach's alpha. Diagnostic ability (area under the curve) and recommended cutoffs were determined by receiver operating characteristic (ROC) analysis. The VCAT and its subdomains demonstrated good construct validity in terms of both convergent and divergent validity and good internal consistency (α = .74). ROC analysis found that the VCAT was on par with the Mini Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA) at distinguishing between healthy comparisons, MCI, and mild AD. Consistent with previous studies, VCAT scores were not affected by language of administration or ethnicity in our cohort. Findings suggest the following cutoffs: Dementia 0-19, MCI 20-24, Normal 25-30. This study established the construct validity of the VCAT, which is vital to ensure its subdomains effectively measure the cognitive processes they were designed to. The VCAT is capable of detecting early cognitive impairments and allows for meaningful cross-cultural comparisons, especially useful for international collaborations and clinical trials, and for clinical use in diverse multiethnic populations.

A methodological synthesis and meta-analysis of judgment tasks in second language research

Judgment tasks (JTs, often called acceptability or grammaticality judgment tasks) are found extensively throughout the history of second language (L2) research. Data from such instruments have been used to investigate a range of hypotheses and phenomena, from generativist theories to instructional effectiveness. Though popular and convenient, JTs have engendered considerable controversy, with concerns often centered on their construct validity in terms of the type of representations they elicit, such as implicit or explicit knowledge. A number of studies have also examined the impact of JT conditions such as timed vs. untimed, oral vs. written. This article presents a synthesis of the use of JTs and a meta-analysis of the effects of task conditions on learner performance. Following a comprehensive search, 385 JTs were found in 302 individual studies. Each report was coded for features related to study design as well as methodological, procedural, and psychometric properties of the JTs. These data were synthesized in order to understand how this type of instrument has been implemented and reported. In addition to observing a steady increase in the use of JTs over the last four decades, we also found many of the features of JTs, when reported, varied substantially across studies. In terms of the impact of JT design, whereas modality was not found to have a strong or stable effect on learner performance (median d = .14; interquartile range = 1.04), scores on untimed JTs tended to be substantially higher than when timed ( d = 1.35; interquartile range = 1.74). In examining these features and their links to findings, this article builds on a growing body of methodological syntheses of L2 research instrumentation and makes a number of empirically grounded recommendations for future studies involving JTs.

Improving Safety through Non-Technical Skills in Chemical Plants: The Validity of a Questionnaire for the Self-Assessment of Workers.

This research is aimed at developing a questionnaire for the self-assessment of non-technical skills (NTS) leading to safety in the chemical sector and at analysing the properties of its scales in terms of construct validity. The research involved 269 Italian employees from three chemical plants of an international company, who occupied low–medium levels in the organizational hierarchy. Results showed a good level of validity and reliability of the instrument and suggested that communication, situational awareness, decision-making, and fatigue/stress management are the four most important NTS for safety in the chemical sector.

An evaluation of the psychometric properties of the sf-12v2 health survey among adults with hemophilia

BackgroundThis study examined the psychometric properties of version 2 of the SF-12 Health Survey (SF-12v2) among adults with hemophilia in the United States.MethodsThis study employed a cross-sectional design using web-based and paper-based self-administered surveys. Hemophilia patients were recruited using an online panel and at a hemophilia treatment clinic. The psychometric properties of the SF-12v2 were assessed in terms of construct validity, internal consistency reliability, and presence of floor and ceiling effects.ResultsA total of 218 adults with hemophilia completed the survey, with most recruited via the online panel (78%). Confirmatory factor analysis using the WLSMV estimator in Mplus supported a two-factor model for the SF-12v2 where the physical functioning, role physical, bodily pain, and general health items loaded onto a latent physical factor (LPF) and the role emotional, mental health, social functioning, and vitality items loaded onto a latent mental factor (LMF). Model fit statistics for the two-factor model were: Chi-square [df] = 172.778 [48]; CFI = 0.972; TLI = 0.962; RMSEA [90% CI] = 0.109 [0.092–0.127]; WRMR = 0.947. Correlated residuals for items belonging to similar domains were estimated and there was a significant correlation between LPF and LMF. All standardized factor loadings were strong and statistically significant, indicating adequate convergent validity. Item-to-other scale correlations were lower than item-to-hypothesized scale correlations suggesting good item discriminant validity. Model testing revealed that LPF and LMF were not perfectly correlated, suggesting adequate construct discriminant validity. Increasing levels of symptom severity were associated with significant decreases in physical component summary (PCS) and mental component summary (MCS) scores, supporting known-groups validity. Internal consistency reliability was satisfactory, with Cronbach’s alpha of 0.848 for the LPF and 0.785 for the LMF items. Finally, none of the participants received the least or maximum possible PCS or MCS score, indicating the absence of floor and ceiling effects.ConclusionsOverall, the SF-12v2 was found to have adequate psychometric validity in our sample of adults with hemophilia. These results add to the growing evidence of psychometric validity of the SF-12v2 in different patient populations including hemophilia.