Psychometric Strengths Research Articles

Assessing Narcissistic Patterns: A Comprehensive Approach with the Narcissistic Personality Patterns Test (NPPT)

The Narcissistic Personality Patterns Test (NPPT) is a rigorously designed assessment tool aimed at identifying narcissistic traits across seven key dimensions: grandiosity, attention-seeking, lack of empathy, entitlement, exploitative behavior, envy, and arrogance. This tool bridges the gap in existing measures by providing a multidimensional approach to understanding narcissistic behavior patterns, emphasizing both clinical utility and research applicability. With high reliability and validity, the NPPT offers psychometric strength, allowing practitioners to diagnose narcissistic personality disorder (NPD), guide interventions, and monitor therapeutic progress. Additionally, the NPPT serves as a valuable tool in research settings to explore the impact of narcissistic traits on various psychological and social phenomena. This paper outlines the conceptual foundation, development process, scoring methodology, and implications for the NPPT in enhancing the accurate assessment of narcissistic personality patterns.

Measuring undergraduate evolution learning using the CANS: psychometric strengths and limitations

BackgroundEvolution continues to be one of the most difficult biological topics to teach, warranting innovative pedagogical tools and assessment strategies for enhancing evolutionary instruction. A major advance in measuring the evolution knowledge of undergraduate students came with the development of the Conceptual Assessment of Natural Selections (CANS). In this study, we use the CANS to measure knowledge and learning of natural selection in a large (N > 6000) sample of undergraduate students to expand upon prior validity testing of this instrument and advance knowledge of student evolutionary reasoning. We apply the Rasch measurement framework to examine if the CANS productively measures the intended construct and investigate the patterns of knowledge and learning about evolution among students with different backgrounds and demographic characteristics.ResultsWhile a unidimensional Rasch model demonstrated acceptable reliabilities and fit for most of the CANS items, some items showed problematic fit statistics and were resistant to instruction. The instrument items also did not span the full range of student abilities, which suggests relatively low measurement precision. Our large sample also allowed rigorous tests of multidimensionality, revealing the presence of multiple dimensions or constructs, some of which may not be intentional. These results generated specific item-level recommendations for improving this instrument. Using Rasch measures to examine learning patterns, we found that pre-test evolution knowledge was low but that there were high learning gains by the end of the course. However, some concept categories were found to be more difficult than others, suggesting the need for more attention to these areas by instructors. We also identified pre-test disparities in evolutionary knowledge by socially defined race and biological sex, yet students from all groups achieved comparable learning gains at the end of the course.ConclusionThe CANS holds great potential to generate critical insights about student evolutionary reasoning and provide information about which instructional approaches most effectively mitigate the notable knowledge disparities among students. We leverage the findings of this study to propose tangible ways in which this instrument may be improved in order to better achieve both of these goals.

A Psychometric Review of Universal Reading Screeners Approved by the State Board of Education

In 2023, the Georgia Legislature passed the Georgia Early Literacy Act (HB 538), representing a sweeping reform effort to improve the quality of early reading instruction in the state. HB 538 requires schools to screen children in kindergarten through third grade three times yearly. Related to this requirement, HB 538 requires that the State Board of Education approve a list of 16 universal reading screeners that can: 1) provide relevant information to target instruction, 2) measure foundational literacy skills, 3) identify students who are struggling to acquire reading skills, and 4) be used to monitor progress. The purpose of this review is to provide a supplement to the SBOE’s approved list so that Local Education Agencies (LEAs) can assess the relative psychometric strength of each screener as they select the most appropriate screener for the students they serve. We compiled information regarding each screener's reliability, validity, sensitivity, and specificity to create an exposition of their strengths and weaknesses. We found that GaDOE's approved list contains numerous tools with acceptable psychometric properties; however, large variability in the amount of psychometric data available for each screener is problematic. LEAs are recommended to consider psychometric strength as a critical factor when selecting an early literacy screener.

Validation of Patient-Reported Outcomes in Patients With Nonmetastatic Breast Cancer Receiving Comprehensive Nodal Irradiation in the RadComp Trial

Our purpose was to evaluate the measurement properties of patient-reported outcome (PRO) measures used in the ongoing RadComp pragmatic randomized clinical trial (PRCT). The deidentified and blinded data set included 774 English-speaking female participants who completed their 6-month posttreatment assessment. Eleven PRO measures were evaluated, including the Trial Outcome Index from the Functional Assessment of Cancer Therapy-Breast (FACT-B), Satisfaction with Breast Cosmetic Outcomes, the BREAST-Q, and selected Patient-Reported Outcomes Measurement Information System (PROMIS) measures. PROs were measured at 3 timepoints: baseline, completion of radiation therapy (RT), and 6 months post-RT. Ten variables were used as validity anchors. Pearson or Spearman correlations were calculated between PROs and convergent validity indicators. Mean PRO differences between clinically distinct categories were compared with analysis of variance methods (known-groups validity). PRO change scores were mapped to change in other variables (sensitivity to change). Most correlations between PROs and validity indicators were large (≥0.5). Mean score for Satisfaction with Breast Cosmetic Outcomes was higher (better) for those with a lumpectomy compared with those with a mastectomy (P < .001). Mean scores for the FACT-B Trial Outcome Index and for PROMIS Fatigue and Ability to Participate in Social Roles and Activities were better for those with good baseline performance status compared with those with poorer baseline performance status (P < .05). At completion of RT and post-RT, mean scores for Satisfaction with Breast Cosmetic Outcomes and BREAST-Q Radiation were significantly different (P < .001) across categories for all Functional Assessment of Chronic Illness Therapy -Treatment Satisfaction - General items. There were medium-sized correlations between change scores for FACT-B Trial Outcome Index, Fatigue, Anxiety, and Ability to Participate in Social Roles and change scores in the Visual Analog Scale. For patients with nonmetastatic breast cancer receiving radiation in the RadComp PRCT, our findings demonstrate high reliability and validity for important PRO measures, supporting their psychometric strength and usefulness to reflect the effect of RT on health-related quality of life.

Measuring Psychological Response to Pandemics: Further Psychometric Investigation of the COVID Stress Scales

The COVID Stress Scales (CSS; Taylor et al., 2020b) were developed as a measure of stress related to any pandemic, making it a valuable self-report measure for potential future large-scale infectious disease outbreaks. Although the initial validation study of the CSS indicated evidence of its psychometric strength, further assessment is warranted of the measure’s retest reliability, the long-term stability of its five-factor structure, discriminant validity, and its relationship with pandemic-related risk and precautionary behaviors. We examined these psychometric elements of the CSS using longitudinal data collected from a nationally representative sample of adults (N = 205) during the COVID-19 pandemic. Results indicate moderate retest reliability that is consistent with changing rates of morbidity. Results also support the five-factor structure and demonstrate convergent validity, discriminant validity, and the ability to predict relevant behavioral responses to an active pandemic. Use of the CSS for future pandemics is discussed.

Assessment of patients with head and neck cancer using the MD Anderson Dysphagia Inventory: Results of a study into its comprehensiveness, comprehensibility and relevance to clinical practice.

The MD Anderson Dysphagia Inventory (MDADI) is a widely used patient-reported outcome measure (PROM) which assesses dysphagia-related quality of life (QoL) in head and neck cancer (HNC). Despite its common use in HNC research and clinical practice, few of its psychometric properties have been reappraised since its inception. The aim of this study was to perform a survey-based qualitative analysis of UK HNC clinicians' perceptions of the content validity of the MDADI, evaluating it across the parameters of relevance, comprehensiveness and comprehensibility as per the COSMIN guideline for PROM assessment. Four themes relating to the content validity of the MDADI were identified: (1) MDADI items lack clarity of definition of the terms 'swallowing', 'eating' and 'dysphagia'; (2) the MDADI is perceived to be overly negative in tone including items that service users may find distressing or disempowering; (3) items in the tool are exclusory to specific subgroups of patients, such as those who are nil by mouth or socially isolated; and (4) modifications to the MDADI were suggested and encouraged to make it more clinically useful and patient-centred. This study indicates that MDADI's content validity is 'insufficient' when rated by COSMIN parameters. This has significant implications for its continued use in HNC research and clinical practice. Further re-evaluation of the content validity of the MDADI is warranted, with potential future amendment of items being indicated if the results of this study are corroborated in subsequent research. What is already known on the subject The MD Anderson Dysphagia Inventory (MDADI) patient-reported outcome measure of dysphagia-related quality of life is widely used in clinical practice and international clinical trials. Content validity is considered to be the most important property of a tool when assessing its psychometric strengths and weaknesses; however, the MDADI's content validity has not been reappraised since its initial development. What this paper adds to existing knowledge This study presents UK speech and language therapists' opinions and experience of the content validity of the MDADI and this first reappraisal of its content validity since its initial development highlights several issues with this psychometric parameter of the tool. This study highlights that further re-evaluation of the content validity of the MDADI is warranted, with potential future amendment of items being indicated if the results of this study are corroborated in subsequent research. What are the potential or actual clinical implications of this work? Clinicians cannot assume that commonly used outcomes tools have strong psychometric profiles. Consideration of the content validity of outcomes tools during selection for use in clinical and research practice should be key, as this will encourage use of tools that produce relevant, valid data that can contribute meaningfully to patient-centred care.

Three-Item Dimensions of Anger Reactions Scale

Problematic anger is prevalent and associated with adjustment difficulties in military populations. To facilitate measurement of problematic anger, a very brief valid measure is needed. To reduce the Dimensions of Anger Reactions 5-item (DAR-5) scale to a very brief measure. This cross-sectional study used survey data collected between 2014 and 2016 in the Australian Transition and Well-Being Research Programme and US Millennium Cohort Study. Participants were service members who were actively serving or had transitioned out of the military (separated). Statistical analyses were performed from September 2021 to June 2023. The DAR-5 was reduced to the 3 experiential items: frequency, intensity, and duration (the DAR-3). Psychometrics for the DAR-3 and DAR-5 were compared in terms of standardized Cronbach α, positive screening result, mean, and SD. Analyses were stratified by Australian and US military service status cohorts (active duty and separated). A total of 71 010 participants were included from Australia and the US. Of 10 900 Australian participants (8145 active duty participants [74.7%]; 2755 separated participants [25.3%]), 5893 (55.2%) were aged 40 years or older and 8774 (80.5%) were male; of 60 110 US participants (24 706 active duty participants [41.1%]; 35 404 separated participants [58.9%]), 28 804 (47.9%) were aged 30 to 39 years and 43 475 (72.3%) were male. The DAR-3 demonstrated good internal consistency in the active duty (Australia: mean [SD] score, 4.97 [2.5]; α = 0.90; US: mean [SD] score, 5.04 [2.6]; α = 0.87) and separated (Australia: mean [SD] score, 6.53 [3.4]; α = 0.92; US: mean [SD] score, 6.05 [3.2]; α = 0.91) samples. The cutoff score of 8 or greater on the DAR-3 had optimal sensitivity and specificity across all samples. DAR-3 and DAR-5 were associated with posttraumatic stress disorder (PTSD), depression, aggression, and relationship conflict. While the scales did not significantly differ in their associations with PTSD, depression, and relationship conflict, the magnitude of association for aggression was significantly lower in US samples using the DAR-3 (eg, US active duty sample: DAR-5 OR, 9.96; 95% CI, 9.01-11.00; DAR-3 OR, 8.36; 95% CI, 7.58-9.22). In this cross-sectional study of a very brief measure of anger, each item contributed to the overall strength of the measure without losing psychometric strength compared with the DAR-5. The consistency of these findings across military and veteran samples in Australian and US populations demonstrated the psychometric robustness of the DAR-3.

Consistency as the Currency in Psychological Measures: A Reliability Generalization Meta‐Analysis of Kessler Psychological Distress Scale (K‐10 and K‐6)

Background: Psychological distress is a critical concern in mental health, significantly impacting the quality of life across lifespan. Reliable and culturally adaptable assessment tools are essential for effective diagnosis and intervention. The Kessler Psychological Distress Scales (K‐10 and K‐6) are widely used for their efficiency and psychometric strength, but the reliability of K‐10 and K‐6 across different populations and settings remains to be determined.Objective: This study aims to evaluate the reliability generalization (RG) of the K‐10 and K‐6 scales across diverse demographic and cultural contexts, providing a comprehensive meta‐analysis of their performance.Method: A RG meta‐analysis was conducted using data from peer‐reviewed articles published between 2002 and 2024, sourced from databases such as Web of Science, Scopus, and ScienceDirect. The analysis included 48 studies that reported reliability measures like Cronbach’s α, focusing on the psychometric properties of the scales across various populations and settings.Results: The meta‐analysis revealed high internal consistency for both the K‐10 (mean α = 0.90, 95% confidence interval (CI) [0.88, 0.91]) and K‐6 (mean α = 0.84, 95% CI [0.80, 0.88]) scales. Reliability varied across different populations and languages. For the K‐10, the highest reliability was found among adolescents (α = 0.93) and carers (α = 0.91). The K‐10 demonstrated exceptional reliability in settings such as Australia (α = 0.97) and significant variability in Tanzania (α = 0.78). The K‐6 scale showed high reliability among outpatients (α = 0.89) and the general population (α = 0.87). The scales were adapted into multiple languages, including English, Chinese, Swahili, Farsi, Indonesian, Japanese, Hindi, and Portuguese, reflecting their global applicability and adaptability.Conclusion: The Kessler Psychological Distress Scales (K‐10 and K‐6) are reliable tools for measuring psychological distress in general and clinical populations. Their high reliability and adaptability across diverse settings highlight their value in clinical practice and research. These findings support the continued use and adaptation of these scales in global mental health assessments, emphasizing the importance of cultural and linguistic considerations.

What's in Your Dataset? Measuring Engagement in HIV Care Using Routinely Administered Items with a Population Disproportionately Burdened by HIV.

We evaluated the psychometric properties of a measure consisting of items that assess current HIV care continuum engagement based on established definitions in the United States. At baseline, participants in this longitudinal study, which included three time points from 2015 to 2020, were 331 young Black sexual minority men ages 18-29 living with HIV in the southern United States residing in two large southern cities. Self-report items reflected four aspects of HIV care continuum engagement as binary variables: seeing a healthcare provider for HIV care, being on antiretroviral treatment, being retained in HIV care, and being virally suppressed. Of these, the following three variables loaded onto a single factor in exploratory factor analysis: being on antiretroviral treatment, being retained in HIV care, and being virally suppressed. A one-dimensional factor structure was confirmed using confirmatory factor analyses at separate time points. Additionally, the three items collectively showed measurement invariance by age, education level, employment status, and income level. The three-item measure also showed reliability based on coefficient omega and convergent validity in its associations with indicators of socioeconomic distress, depression, resilience, and healthcare empowerment. In sum, the items performed well as a single scale. The study demonstrated the potential psychometric strength of simple, feasible, commonly administered items assessing engagement in the HIV care continuum.

The Psychometric Structure of Executive Functions: A Satisfactory Measurement Model? An Examination Using Meta-Analysis and Network Modeling.

A long-standing debate among cognitive scientists has focused on describing the underlying nature of executive functions, which has important implications for both theoretical and applied research. Miyake et al.'s three-factor model has often been considered the gold-standard representation of executive functions and has driven much research in the field. More recently, however, there have been increasing concerns that the three-factor model does not adequately describe a highly complex construct such as executive functions. The current project presents two studies that examine the veracity of Miyake et al.'s model and propose a new approach (i.e., network modeling) for detecting the underlying nature of executive functions. The current results raise questions about the psychometric strength and adequacy of the three-factor model. Further, the studies presented here provide evidence that network modeling provides a better understanding of executive functions as it better captures (relative to latent variable modeling) the complexity of cognitive processes. Theoretical and applied implications are discussed.

The psychometric strength and patient centeredness of the Defense and Veterans Pain Rating Scale.

The psychometric strength and patient centeredness of the Defense and Veterans Pain Rating Scale.

Categorization and recommendations for outcome measures for lower limb absence by an expert panel.

Understanding the psychometric strengths and limitations of outcome measures for use with people with lower limb absence (LLA) is important for selecting measures suited to evaluating patient outcomes, answering clinical and research questions, and informing health care policy. The aim of this project was to review the current psychometric evidence on outcome measures in people with LLA to determine which measures should be included in a stakeholder consensus process. An expert panel was assembled, and a 3-stage review process was used to categorize outcome measures identified in a systematic literature review into 3 distinct categories (recommended for measures with better than adequate psychometric properties; recommended with qualification; and unable to recommend). Panelists were asked to individually categorize measures based on results of a systematic review of identified measures' psychometric properties. Each measure's final categorization was based on ≥70% agreement by all panelists. No outcome measure attained the ≥70% consensus threshold needed to achieve a rating of "recommend." Hence, panelists suggested combining "recommend" and "recommend with qualifications" into a single category of "recommend with qualifications." Using this approach, consensus was reached for 59 of 60 measures. Consensus could not be reached on 1 outcome measure (socket comfort score). Thirty-six outcome measures were categorized as "unable to recommend" based on available evidence; however, 23 (12 patient-reported measures and 11 performance-based measures) demonstrated adequate psychometric properties in LLA samples and were thus rated as "recommend with qualification" by the expert panel. The panel of experts were able to recommend 23 measures for inclusion in the subsequent stakeholder review. A key strength of this process was bringing together international researchers with extensive experience in developing and/or using LLA outcome measures who could assist in identifying psychometrically sound measures to include in a subsequent stakeholder consensus process. The above categorizations represent the current state of psychometric evidence on outcome measures for people with LLA and hence may change over time as additional research becomes available. The results will be used to achieve wider consensus from clinicians, health policymakers, health clinic managers, researchers, and end users (i.e., individuals with LLA) on outcome measures for the International Society of Prosthetics and Orthotics lower limb Consensus Outcome Measures for Prosthetic and Amputation ServiceS.

The Emotion Regulation Questionnaire-Short Form (ERQ-S): A 6-item measure of cognitive reappraisal and expressive suppression

BackgroundEmotion regulation plays a crucial role in affective functioning. One of the most commonly used measures of emotion regulation is the Emotion Regulation Questionnaire (ERQ), a 10-item self-report measure assessing frequency of use of two common emotion regulation strategies: cognitive reappraisal and expressive suppression. In this study, we aimed to optimize the utility of the ERQ for time-pressured settings by introducing and validating a 6-item short form called the Emotion Regulation Questionnaire-Short Form (ERQ-S). MethodGeneral community (N = 508) and college student (N = 245) samples from the United States completed online surveys containing a range of psychometric self-report measures. For each sample, we examined the factor structure, internal consistency, and concurrent validity of the ERQ-S. ResultsOur confirmatory factor analyses supported the intended 2-factor structure of the ERQ-S (cognitive reappraisal and expressive suppression factors), with all items loading well on their intended factor in both samples. As expected, the ERQ-S correlated highly with the ERQ. A profile of low cognitive reappraisal use and high expressive suppression use on the ERQ-S was significantly associated with higher levels of emotion regulation difficulties, alexithymia, and affective symptoms. LimitationsWe did not examine psychometric performance in a clinical sample, or other cultural groups outside the US. All concurrent validity markers were self-report questionnaires. ConclusionsOur data suggest that the ERQ-S successfully retains the psychometric strengths of the ERQ. The shorter format of the ERQ-S should therefore help to optimize the measurement of emotion regulation in time-pressured settings.

Usability Assessment Methods for Mobile Apps for Physical Rehabilitation: Umbrella Review.

Usability has been touted as one determiner of success of mobile health (mHealth) interventions. Multiple systematic reviews of usability assessment approaches for different mHealth solutions for physical rehabilitation are available. However, there is a lack of synthesis in this portion of the literature, which results in clinicians and developers devoting a significant amount of time and effort in analyzing and summarizing a large body of systematic reviews. This study aims to summarize systematic reviews examining usability assessment instruments, or measurements tools, in mHealth interventions including physical rehabilitation. An umbrella review was conducted according to a published registered protocol. A topic-based search of PubMed, Cochrane, IEEE Xplore, Epistemonikos, Web of Science, and CINAHL Complete was conducted from January 2015 to April 2023 for systematic reviews investigating usability assessment instruments in mHealth interventions including physical exercise rehabilitation. Eligibility screening included date, language, participant, and article type. Data extraction and assessment of the methodological quality (AMSTAR 2 [A Measurement Tool to Assess Systematic Reviews 2]) was completed and tabulated for synthesis. A total of 12 systematic reviews were included, of which 3 (25%) did not refer to any theoretical usability framework and the remaining (n=9, 75%) most commonly referenced the ISO framework. The sample referenced a total of 32 usability assessment instruments and 66 custom-made, as well as hybrid, instruments. Information on psychometric properties was included for 9 (28%) instruments with satisfactory internal consistency and structural validity. A lack of reliability, responsiveness, and cross-cultural validity data was found. The methodological quality of the systematic reviews was limited, with 8 (67%) studies displaying 2 or more critical weaknesses. There is significant diversity in the usability assessment of mHealth for rehabilitation, and a link to theoretical models is often lacking. There is widespread use of custom-made instruments, and preexisting instruments often do not display sufficient psychometric strength. As a result, existing mHealth usability evaluations are difficult to compare. It is proposed that multimethod usability assessment is used and that, in the selection of usability assessment instruments, there is a focus on explicit reference to their theoretical underpinning and acceptable psychometric properties. This could be facilitated by a closer collaboration between researchers, developers, and clinicians throughout the phases of mHealth tool development. PROSPERO CRD42022338785; https://www.crd.york.ac.uk/prospero/#recordDetails.

Dual career competency questionnaire for athletes: psychometric properties of the Brazilian version.

No studies have yet attempted to quantitatively measure the competencies of Brazilian student-athletes. Consequently, there are no validated measures suitable for this purpose. The aim of this research was to examine the psychometric properties and assess content validity, factorial validity and evidence based on response processes of the Brazilian version of the Dual Career Competency Questionnaire for Athletes (DCCQ-A). The Brazilian DCCQ-A was administered to 745 student-athletes (Mage = 17.3 ± 5.4; 54% female; 8% student-athletes with disabilities). Content validity coefficient analysis indicated clarity of language, theoretical pertinence, and practical relevance of the Brazilian DCCQ-A items. Confirmatory factorial analysis revealed excellent goodness-of-fit indices of the 4-factor structure model. Polytomous Rasch analysis demonstrated an acceptable adjustment of the items and good organization in the item response categories. Considering the psychometric strength of the Brazilian DCCQ-A, this instrument can contribute to the practical and research applicability of sport psychology, providing support to those involved with student-athletes' dual career by identifying their competencies and possible limitations.

“Green et al. Paranoid Thoughts Scale-revised”: Structural invariance and clinical utility of a brief version in schizophrenia

ObjectivePersecutory ideas are highly frequent in psychotic disorders and particularly in schizophrenia. Although several measures exist to assess persecutory ideas in both clinical and non-clinical samples, there is a need for brief and psychometrically sound measures to capture the multidimensional aspects of paranoia in people diagnosed with schizophrenia. Our aim was to validate a brief version of the revised Green et al., Paranoid Thoughts Scale (R-GPTS) in schizophrenia in order to minimize time-consuming assessment. Methods100 individuals with schizophrenia and 72 non-clinical controls were recruited. We used the GPTS-8, a brief 8-item version of the R-GPTS recently developed and validated in the French general population. Psychometric properties of the scale were investigated including its factor structure, internal consistency, and convergent/divergent validities. ResultsConfirmatory factor analysis supported the original two-factor structure (social reference and persecution subscales) of the GPTS-8. The GPTS-8 was positively and moderately correlated with the Positive and Negative Syndrome Scale (PANSS) suspiciousness item indicating good internal consistency. Concerning divergent validity, no correlations were found between the GPTS-8 and the Montreal cognitive assessment (MoCA). Importantly patients with schizophrenia reported higher scores on the GTPS-8 than controls demonstrating its clinical validity. ConclusionsThe French GPTS 8-item brief scale-8 retains the psychometric strengths of the R-GPTS in schizophrenia with relevant clinical validity. The GPTS-8 can consequently be used as a short and quick measure of paranoid ideations in individuals with a diagnosis of schizophrenia.

The Kāffah of Islamic Scale: Development and Validation

Prudent study and analysis of the religiosity instruments that have been circulating it are found that there are many variations of instruments measuring the religiosity of Muslims. This is due to differences in the conceptual constructs used by the researchers as the basis for developing such instruments. The use of concepts and instruments that are not based on Islamic religiosity has the potential to distance the measuring instrument from what psychological behavior to be measured, while the measuring instrument based on Islamic religiosity is also not yet fully solid, in line, and be close to each other with Islam. Dissatisfaction with the instruments based on the constructs and instruments of Islamic religiosity that have been compiled has encouraged researchers to develop religious instruments based on Islamic teachings in a precise and solid manner. This instrument is called the Kāffah of Islamic Scale (KIS). The results of the psychometric test and empirical data show that the Kāffah of Islamic Scale (KIS) has a good factor structure through the testing phase of the unidimensional fit model. The Kāffah of Islamic Scale (KIS) measuring instrument consists of five dimensions, namely belief, formal ritual, interpersonal, personal, and morality. There are 33 valid items to measure the Islamic construct of the kāffah composed of five items representing the belief dimension, six items representing the formal dimension of ritual, thirteen items representing interpersonal relationships, twelve items representing the personal dimension, and three items representing the morality dimension. Overall, the results of this research provide preliminary evidence to support the use of the Kāffah of Islamic of Scale (KIS) as a measurement tool that has conceptual and psychometric strengths.

Development and psychometric properties of the Multidimensional Inventory of Recovery Capital (MIRC)

BackgroundResearchers have developed several instruments to measure recovery capital—the social, physical, human, and cultural resources that help people resolve alcohol and other drug problems. However, existing measures are hampered by theoretical and psychometric weaknesses. The current study reports on process and psychometric outcomes for the Multidimensional Inventory of Recovery Capital (MIRC), a novel measure of recovery capital. MethodsWe used a three-phase, mixed methods approach to develop the MIRC. Individuals who identified as having resolved alcohol problems were recruited in each phase. Phase one focused on item development, with participants providing qualitative feedback on potential items. In phase two (pilot testing) and phase three (final psychometric evaluation), participants completed revised versions of the MIRC to assess its psychometric strength and item performance. ResultsPhase one (n=44) resulted in significant item alteration, culminating in a 48-item pilot measure. Pilot testing analyses (n=497) resulted in the deletion or replacement of 17 items. In the final psychometric evaluation (n=482), four additional items were deleted, resulting in a 28-item MIRC comprising four subscales measuring social, physical, human, and cultural capital. The psychometric properties of the final MIRC and its subscales ranged from sound to strong, with high response variability suggesting appropriate item discrimination. ConclusionResults confirm the psychometric strength of the MIRC and underscore the importance of incorporating the insights of diverse samples of people in recovery. The MIRC holds promise as an assessment tool in future research and is available for use at no cost in treatment and community-based settings.

Validation and Enhancement of the 6-Item Nature-Relatedness Scale Using Rasch Analysis

This study examines psychometric properties of the 6-item Nature-Relatedness Scale (NR-6) using Rasch analysis. Nature relatedness is an important indicator of several markers of human and ecological well-being, and the NR-6 is a common convenient measure. In addition, the NR-6 is an ordinal scale with limited suitability for use with parametric statistics due to inconsistency with fundamental measurement principles. The current Rasch analysis employed the partial credit model using a sample (n = 450) collected from the United States. Initial analysis showed local dependency, low reliability, and poor fit to the Rasch model. The best model fit (χ2[24] = 29.30, p = 0.209) and reliability (Person Separation Index = 0.74) were achieved through combining locally dependent items, reducing measurement error. These findings support the psychometric strength of the NR-6 given the use of the included ordinal-to-linear conversion table, providing improvement without altering the original scale format.

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

BackgroundAlexithymia is a trait characterized by difficulties identifying feelings, difficulties describing feelings, and externally orientated thinking. It is widely regarded as an important transdiagnostic risk factor for a range of psychopathologies, including depressive and anxiety disorders. Whilst several well-validated psychometric measures of alexithymia exist, these are relatively lengthy, thus limiting their utility in time-pressured settings. In this paper, we address this gap by introducing and validating a brief 6-item version of the Perth Alexithymia Questionnaire, called the Perth Alexithymia Questionnaire-Short Form (PAQ-S). MethodAcross two studies with adult samples (Study 1 N = 508 United States community; Study 2 = 378 Australian college students), we examined the psychometric properties of the PAQ-S in terms of its factor structure, reliability, and concurrent/criterion validity. ResultsIn exploratory and confirmatory factor analyses, all PAQ-S items loaded well on a single general alexithymia factor. The PAQ-S total score had high reliability, and correlated as expected with the long-form of the PAQ, as well as other established markers of alexithymia, emotion regulation, and affective disorder symptoms. LimitationsOur samples were general community or college student samples from two Western countries; future validation work in clinical samples and more diverse cultural groups is thus needed. ConclusionsThe PAQ-S retains the psychometric strengths of the PAQ. As such, the PAQ-S can be used as a quick, robust measure of overall alexithymia levels. The introduction of the PAQ-S hence enables valid assessments of alexithymia in a more diverse range of settings and research designs.