Single-factor Model Research Articles

Cross-cultural adaptation and validation of the Chinese version of the Trauma Resiliency Scale (tRS-18)

BackgroundTrauma is a prevalent issue in public health, where individuals who experience physical injuries are also at risk of compromised mental health. Psychological resilience is considered a positive indicator that can predict the prognosis of trauma patients throughout their traumatic experiences. Currently, there is a lack of tools in China for measuring the psychological resilience of trauma patients. The aim of this study was to translate and cross-culturally adapt the Trauma Resiliency Scale (tRS-18) into Chinese and to test its reliability and validity in China.MethodsThe Trauma Resiliency Scale (tRS-18) was translated into a Chinese version suitable for the Chinese language environment using the Brislin translation model. A convenience sampling method was used to select 588 trauma patients as study subjects. Reliability was assessed using Cronbach’s alpha coefficient, 14-day test-retest reliability, and split-half reliability. Validity was examined through the content validity index, structural validity, and convergent validity. Structural validity was specifically evaluated through exploratory factor analysis (EFA) and confirmatory factor analysis (CFA).ResultsThe total variance explained by the single-factor model in the exploratory factor analysis (EFA) of the Chinese version of the tRS-18 was 62.048%, and the factor loading of each item exceeded 0.4. The results of the CFA indicated that the model demonstrated a favorable fit index (X2/df = 1.620; RMSEA = 0.046; SRMR = 0.026; NFI = 0.945; CFI = 0.978; GFI = 0.927; TLI = 0.975; IFI = 0.978). The Cronbach’s alpha coefficient of the reliability index was 0.963, the test-retest reliability was 0.970, and the split-half reliability was 0.964, which were all within the reference value range.ConclusionThe Chinese version of the tRS-18 has good validity and reliability and can be used as an assessment tool for trauma resilience in trauma patients.

Risk factors-adjusted performance and persistence during the post-subprime crisis period: evidence from Indian mutual fund industry

PurposeThe main objective of the paper is to find evidence of abnormal returns and performance persistence of actively managed equity funds in the Indian context on an annual basis during the post-subprime crisis period between 2009 and 10 and 2019 and 2020.Design/methodology/approachThe study is exploratory and empirical, used daily net asset value (NAV) of 180 equity funds for 10 years and applied the risk-adjusted, Jensen's (1968) single-factor, Fama and French's (1993) three-factor model and Carhart's (1997) four-factor model to evaluate the performance. The performance persistence has been tested using cross-section regression (Bollen and Busse, 2005), the non-parametric contingency approach, along with the robustness measure, i.e. Malkiel's (1995) Z-score, Brown and Goetzmann's (1995) cross-product ratio (CPR) and Kahn and Rudd's (1995) χ2 value.FindingsThe results show that the Indian equity funds are unable to generate abnormal returns, and the size, value and momentum strategies applied by the fund managers in generating abnormal returns do not work effectively. However, funds provide strong evidence of significant performance persistence on an annual basis in the short-term, mid-term and long-term periods. Both parametric as well as non-parametric tests provide identical evidence of persistence, and the performance persistence is independent of the choice of models, as all the models (i.e. two, three or four-factor models) provide significant evidence of persistence.Research limitations/implicationsThough the study is comprehensive and covered a longer period, there is a scope for future research by examining the influence of fund characteristics, fund rating and macroeconomic factors on performance and persistence. It can be extended over to a longer period covering the post-COVID-19 period, a larger sample size and a comparative study of Indian and foreign mutual funds (MFs).Practical implicationsThe outcomes of this research paper can help wealth-maximizing investors in the identification of persistent equity funds and can apply the previous period’s performance information as a useful investment strategy to generate higher returns in the future. We believe that these outcomes will have significant ramifications for all MF stakeholders and policymakers, especially for the Indian industry in ensuring and establishing the credibility of MF managers, in providing better returns as well as to make MF investment more attractive to Indian retail investors.Originality/valueDespite the exponential growth in the Indian MF industry, limited evidence is available on performance and persistence covering a large sample size during the post-sub-prime crisis period using different return models and parametric and non-parametric approaches. The study is based on the daily data set of a larger sample size representing all the Asset Management Company (AMC) and the longer period following the post-subprime crises, which affected capital flows significantly. Moreover, the application of all the measures enables us to understand performance persistence in a larger context.

Development and Psychometric Properties of Environmental, Social, and Governance (ESG) Standards Perceived by Workers, Managers, and Executives

Purpose: Environmental, social, and governance (ESG) benchmarks, introduced in the early 2000s as a complement to corporate social responsibility (CSR), assess the environmental sustainability, societal impact, and ethical responsibility of organizational operations. Despite the growing importance of ESG and the development of various financial metrics, there remains a shortage of empirically validated scales to measure stakeholders' perceptions of these benchmarks. This study aims to develop and validate the ESG-Perception scale, focusing on internal stakeholders such as employees, managers, and executives. Method: The study sampled employees/workers (N = 300) with a mean age of 42.44 years (SD = 13.18) and managers and executives (N = 302) with a mean age of 37.93 years (SD = 10.38). There were more female employee/worker participants (n = 163, 54.5%) than male participants (n = 136, 45.5%), while there were more male manager and executive participants (n = 163, 54.2%) than female participants (n = 138, 45.8%). The majority of employees/workers identified as White/Caucasian (61%, n = 183), similar to the majority of managers and executives, who identified as White/Caucasian (62.3%, n = 188). Exploratory factor analysis (EFA) using employee/worker data was conducted to examine the factor structure of ESG-Perception, while confirmatory factor analysis (CFA) models—including single-factor, first-order, and bi-factor models—were used with manager and executive data to validate the scale’s factor structure and dimensionality. Measurement invariance across gender and race was also tested to ensure the equivalence of the factor structure. The study further assessed the scale’s convergent and discriminant validity. Results: The ESG-Perception scale effectively captured internal stakeholders' perceptions of ESG benchmarks. A multidimensional, three-factor structure was identified, which aligned with the data. The factor structure was invariant across gender and race, allowing for comparisons of latent means across these groups. Convergent validity indicated that perceptions of diversity and inclusion, personality, leadership qualities, and styles influenced endorsement of ESG standards. With the exception of the Environmental and Governance constructs in the data for managers and executives, clear discriminant validity was observed for the scale’s constructs, demonstrating their distinct conceptual boundaries. However, the absence of discriminant validity between the Environmental and Governance constructs indicated overlapping conceptual dimensions, which is particularly indicative of industries where governance practices and environmental performance are closely linked. The bifactor models demonstrated both multidimensionality and unidimensionality for the scale. Conclusions: The ESG-Perception scale contributes to the body of knowledge on sustainability, corporate social responsibility, and ethical responsibility. It supports the application of Stakeholder and Upper Echelons theories and provides valuable insights into how internal stakeholders perceive ESG principles. Knowledge derived from its use can enhance ESG advocacy and help organizations develop effective strategies for adopting, implementing, and complying with ESG frameworks. This can promote transparency, sustainability, and improve corporate practices and outcomes. Despite exhibiting both unidimensional and multidimensional characteristics, the choice of whether to treat the scale as unidimensional or multidimensional will depend on the specific research goals and context.

Identifying the number of latent factors of stochastic volatility models

AbstractWe provide a procedure to identify the number of latent factors of stochastic volatility models. The methodology relies on the non-parametric Fourier estimation method introduced by Malliavin and Mancino (Finance Stoch 4:49–61, 2002) and applies to high-frequency data. Based on the Fourier analysis, we first estimate the latent volatility process and then the volatilities and covariances of the processes that are gradually identified, such as volatility of volatility and leverage. The analysis of the eigenvalue spectrum of the Gram matrix can reveal information about the actual number of factors driving the process at hand. We corroborate our analysis by numerical simulations on single and multi factor models. Finally, we apply our methodology to intraday prices from the S &P 500 index futures.

Reliability and validity of communal narcissism scale in Chinese university students

ObjectiveThe Communal Narcissism Inventory (CNI) was applied to college students to explore the factor structure of the scale under the background of Chinese culture, and to test its reliability and validity. Methods949 university students were measured with CNI scale. The prosocial behavior scale, self-esteem scale and Big Five personality scale were used to verify the reliability and validity of the Chinese version of CNI scale. Three weeks later, 90 college students were randomly selected for retesting. ResultsThe bifactor model is more suitable for university students than the single-factor model. Cronbach'α are 0.92, 0.91 and 0.86. Exploratory factor analysis and confirmatory factor analysis show that the project load is between 0.52 and 0.84, the correlation coefficient is significant, and there is a good fitting index. ConclusionThe Chinese version of CNI has reasonable reliability and validity under the Chinese cultural background, and can be used for the evaluation and research of communal narcissism of domestic university students.

Measuring adjustment of siblings of children with disabilities: psychometric properties across translations, age groups and informants

Objectives The Negative Adjustment Scale (NAS) is used to measure adjustment to having a sibling with a disability. However, several adaptations to the scale have been made, and implementation varies across studies and countries. This study examined the psychometric properties across different versions and provides directions for future use and development of the NAS. Methods The sample comprised 400 siblings aged 6–16 years old from Norway, the Netherlands and Belgium. Measurement invariance was assessed across age groups (8–11 vs. 12–16 years) and translations (Norwegian vs. Dutch), using a multi-group confirmatory factor analysis. The psychometric properties of the parent version were assessed among 102 parents from the Dutch sample. Results The internal consistency of the NAS was acceptable to good in all versions. A single factor model held across age groups and translations, although higher order invariance was not supported. The child and parent report versions of the NAS did not significantly correlate. Conclusions The NAS generally has sufficient psychometric properties. However, these vary across age groups, translations, and informants, causing the NAS to be less appropriate for comparisons between groups. Further adaptation of the NAS or developing a new scale for siblings of children with disabilities, is advised.

Satisfaction with family life scale: a validity and reliability study in the Turkish context

BackgroundThe family is one of the most important pillars of society. They provide strong feelings of security, emotional support, and belonging. Family health has a significant impact on the welfare of people and society as a whole.ObjectivesThis study aimed to create the Satisfaction with Family Life Scale (SWFLS) for Türkiye by modifying the well-known Satisfaction with Life Scale (SWLS) first developed by Diener et al. (1985) and to evaluate its psychometric properties.MethodThe present study examined the factor structure, measurement invariance, convergent validity, and internal consistency of the SWFLS. Confirmatory factor analyses (CFA) were performed on data from a research group of 646 participants aged 18–71 years (M = 31.71, SD = 11.79) in Study 1. As part of the validity assessment, CFA confirmed the unidimensional structure of the SWFLS. The reliability of the scale was assessed using Cronbach’s alpha (α), composite reliability, and the McDonald 0mega (ω). In Study 2, the scale was administered to a new group of 555 participants aged 18 to 67 years (M = 36.4, SD = 9.73) to assess its criterion validity. Test-retest reliability was assessed using a sample of 48 undergraduate students via the intraclass correlation coefficient model 2.1 (ICC2,1).ResultsThe CFA’s results verified the SWFLS’s single-factor model. The internal consistency coefficients of Cronbach’s α and McDonald’s ω were both 0.93. The composite reliability value was 0.94. The result of test-retest reliability (ICC2,1) was 0.96 and ranged from the ICC2,1 value of 0.85 to 0.90 for items of the SWFLS. Multigroup analysis supported full measurement invariance across genders for the SWFLS. Corrected item correlations ranged from 0.75 0.85. The Warwick-Edinburgh Mental Wellbeing Scale (WEMWBS) and SWFLS were shown to have a positive correlation (r = .483, p 0.001), which supports the idea that the two scales have similar convergent validity.ConclusionsBased on these results, the Turkish SWFLS version can be utilized to measure family life satisfaction in the Turkish sample and has appropriate psychometric validity and reliability.

Differential Item Functioning and Clinical Utility of the Subjective Memory Complaints Questionnaire in a Multi-Ethnic Cohort

Introduction: This study evaluated the psychometric properties of the Subjective Memory Complaints Questionnaire (SMCQ) in a non-Hispanic White (NHW) and Mexican American (MA) sample from Texas in the USA. Methods: Data were obtained from the Health and Aging Brain Study – Health Disparities (HABS-HD; N = 1,691, age = 66.5 ± 8.7, education = 12.4 ± 4.8, 60.6% female, 33.2% MA Spanish speaking). Unidimensionality of the SMCQ was evaluated with confirmatory factor analysis. Differential item functioning (DIF) of the SMCQ was assessed across age, sex, education, and ethnicity/language using item response theory/logistic ordinal regression. Associations of the SMCQ in relation to cognitive status, Alzheimer’s disease (AD) blood-based biomarkers, and psychological distress were examined. Results: The SMCQ showed excellent fit in a single-factor model (CFI = 0.97, TLI = 0.97, RMSEA [95% CI] = 0.05 [0.04, 0.05], SRMR = 0.07). Significant item-level DIF was detected by education level and ethnicity/language, but not by age or sex; when detected, DIF was not salient (i.e., adverse). The SMCQ was associated with greater psychological distress, worse Clinical Dementia Rating scores, and greater disease burden as measured by total tau and neurofilament light. Conclusions: Practically negligible item-level bias was identified across education and ethnicity/language. Detected DIF can be described as benign, indicating that some items manifested differently between groups but had minimal impact on measurement properties. These results demonstrate that the SMCQ performs appropriately across demographic variables. Our findings also provide support for the associations of SMCQ scores with self-reported mood, cognitive status, and AD blood-based biomarkers.

Validation and measurement invariance of the Chinese version of the academic self-efficacy scale for university students.

The objective of this study was to examine the psychometric properties of the Chinese version of the Academic Self-Efficacy Scale (ASES-C) and confirm its measurement invariance across gender identities. In this study, 502 university students (29.68% male, 70.32% female) with a mean age of 19.93 years (SD = 1.64) voluntarily participated. The Academic Self-Efficacy Scale (ASE) was utilized as a unidimensional measure of students' learning efficacy. The English version of ASES was translated into Chinese using a forward-backward translation procedure. Confirmatory factor analysis (CFA) and invariance testing were conducted with the single-factor model of ASES. Composite reliability (CR) and internal consistency were calculated based on Cronbach's alpha. Upon re-specification of the model, CFA results for the hypothesized single-factor model with eight items indicated an acceptable fit (CFI = 0.959, TLI = 0.943, SRMR = 0.036, RMSEA = 0.065). Cronbach's alpha and CR values were 0.785 and 0.880, respectively. Multi-group CFA results demonstrated measurement equivalence for the Chinese version of ASES across gender identities. The findings supported the measurement invariance of ASES-C for both male and female participants. The ASES-C, consisting of one factor and eight items, is a reliable instrument for assessing Chinese university students' self-efficacy in learning. Furthermore, it is suitable for making meaningful comparisons across gender identities.

Gender-related measurement invariance on the Self-Reporting Questionnaire (SRQ-20) for global mental distress with older adults in Puerto Rico

BackgroundCommon mental disorders (CMD) vary by age, gender, and culture. This study: (1) examined the factor structure of the 20-item Self Reporting Questionnaire (SRQ-20) and (2) explored gender-related measurement invariance in the SRQ’s performance with older adults in Puerto Rico, a U.S. island territory and associate member of the UN Regional Commissions.MethodsWe merged data from two cross-sectional studies on mental health status and needs of older adults in Puerto Rico (N = 367). The first study was conducted in 2019, two years after Hurricane María devastated the island (N = 154); the second study, in 2021, assessed knowledge, attitudes and practices (KAP) concerning COVID-19 (N = 213). We used chi-square and t-tests to examine gender differences in each SRQ item and assessed internal consistency reliability with Cronbach’s alpha and McDonald’s omega (values > 0.70). We ran two CFA models, then multigroup CFA to test for gender-related measurement invariance. We used weighted least square mean and variance adjusted (WLSMV) estimation to account for the binary response options in the SRQ-20 and Mplus version 8.4 for analyses. There were no missing data for any SRQ-20 items.ResultsThe SRQ-20 had strong internal consistency reliability (α = 0.89; omega = 0.89). Female scores were higher than males scores (t = -2.159, p = .031). Both unidimensional and two-factor models fit the data well. We selected the more parsimonious unidimensional model, which is most widely used in practice. Standardized factor loadings were 0.548 to 0.823 and all were statistically significant (p < .001). We tested gender invariance with the one-factor model. Our findings did not support invariance.ConclusionWe favored the unidimensional model. First, the SRQ-20 was designed to assess global distress. Also, physical symptoms have both somatic and psychological components, so their co-occurrence makes a single-factor model more meaningful. Finally, since older adults experience more physical health problems, instruments that emphasize both types of distress may provide a more accurate measure than those that exclude somatic symptoms. Using the unidimensional model, the SRQ-20 was not invariant, meaning that it performed differently for male and female participants. Future studies of common mental disorders with older adults in Puerto Rico should consider using the SRQ-20 for research and practice and should determine appropriate threshold scores for men and women.

Self-concealment scale (SCS) in middle-aged people: psychometric features and cross-age equivalence test

BackgroundIndividuals’ concealment of negative information and privacy may lead to impaired social interactions and threatened health conditions. This study aimed to investigate the effectiveness of the Self-Concealment Scale (SCS) in the middle-aged Chinese population and to examine the equivalence of the SCS among different age groups.MethodsThe current research adopted the SCS, Distress Disclosure Index (DDI), Revised Cheek and Buss Shyness Scale (RCBS), Social Interaction Anxiety Scale (SIAS), Social Phobia Scale (SPS), UCLA Loneliness Scale (ULS-8), and Kessler Psychological Distress Scale (K10) to survey 1124 middle-aged people. To explore the factor structure of the SCS, the study employed exploratory factor analysis and confirmatory factor analysis. The reliability of the SCS was measured based on Cronbach’s α coefficients, McDonald’s Omega coefficients, and split-half reliability. Correlation analysis was applied to examine the relationship between SCS and RCBS, SIAS, SPS, ULS-8, and K10. Moreover, this study recruited 1458 emerging adults and 1104 older adults to identify the cross-age invariance of the SCS.ResultsExploratory factor analysis of the middle aged adults’ data supported a single factor model. The factor loadings of SCS items ranged from 0.62 to 0.73, the commonality ranged from 0.39 to 0.53, and the single-factor model fitted well. The scale showed a Cronbach’s α coefficient value of 0.895, McDonald’s Omega coefficient of 0.893, and a split-half reliability coefficient value of 0.861. In addition, the SCS demonstrated invariance in emerging adults, middle-aged adults, and older adults. Further analysis showed that the scores of the SCS (F = 3.55, p = 0.029) among emerging adults (M = 26.43, SD = 7.96) were significantly higher than among middle-aged (M = 25.77, SD = 7.79), and older cohort (M = 25.69, SD = 7.91).ConclusionThe SCS revealed favorable psychometric characteristics among the middle-aged Chinese population. The degree of self-concealment among emerging adults was higher than that of middle-aged and older people.

Development and Preliminary Validation of the Divine Connectedness Scale in the USA

This research conceptualized and offered preliminary evidence on the psychometric properties of the 10-item Divine Connectedness Scale—a measure that assesses individuals’ perceptions of feeling supported by (divine guidance) and working with (divine collaboration) God or a Supreme Being. Results of exploratory factor analysis and confirmatory factor analysis with 434 undergraduate students in the United States showed that scores from a single-factor model of divine connectedness were valid and reliable. Divine connectedness was positively associated with religiosity, forgiveness, and well-being variables. Divine connectedness showed incremental validity over demographic covariates, social desirability, and religiosity in predicting later meaning in life and flourishing.

Evidence for separate backward recall and n-back working memory factors: a large-scale latent variable analysis

ABSTRACT Multiple studies have explored the factor structure of working memory (WM) tasks, yet few have done so controlling for both the domain and category of the memory items in a single study. In the current pre-registered study, we conducted a large-scale latent variable analysis using variant forms of n-back and backward recall tasks to test whether they measured a single underlying construct, or were distinguished by stimuli-, domain-, or paradigm-specific factors. Exploratory analyses investigated how the resulting WM factor(s) were linked to fluid intelligence. Participants (N = 703) completed a fluid reasoning test and multiple n-back and backward recall tasks containing memoranda that varied across (spatial or verbal material) and within (verbal digits or letters) domain, allowing the variance specific to task content and paradigm to be assessed. Two distinct but related backward recall and n-back constructs best captured the data, in comparison to other plausible model constructions (single WM factor, two-factor domain, and three-factor materials models). Common variance associated with WM was a stronger predictor of fluid reasoning than a residual n-back factor, but the backward recall factor predicted fluid reasoning as strongly as the common WM factor. These data emphasise the distinctiveness between backward recall and n-back tasks.

High-performing teams: Is collective intelligence the answer?

The concept of a general factor of collective intelligence, proposed by Woolley et al. in 2010, has spurred interest in understanding collective intelligence within small groups. This study aims to extend this investigation by examining the validity of a general collective intelligence factor, assessing its underlying factor structure, and evaluating its utility in predicting performance on future group problem-solving tasks and academic outcomes. Employing a correlational study design, we engaged 85 university students in a series of complex cognitive tasks designed to measure collective intelligence through individual, group, and predictive phases. Contrary to the hypothesized single-factor model, our findings favor a two-factor model influenced by Cattell's theory of crystalized and fluid intelligence. These two factors accounted for substantial variance in group performance outcomes, challenging the prevailing single-factor model. Notably, the predictive validity of these factors on group assignments was statistically significant, with both individual and collective intelligence measures correlating moderately with group assignment scores (rs = .40 to .47, p < .05). Our research suggests that collective intelligence in small group settings may not be uniformly governed by a single factor but rather by multiple dimensions that reflect established theories of individual intelligence. This nuanced understanding of collective intelligence could have significant implications for enhancing group performance in both educational and organizational contexts. Future research should explore these dimensions and their independent contributions to group dynamics and outcomes.

Mental health and meaning in life in Chinese military personnel: a cross-lagged analysis

BackgroundThe burgeoning field of research on the dual-factor model of mental health (DFM) has highlighted its significance, yet the applicability of the DFM in military personnel and its longitudinal relationships with different dimensions of meaning in life remains unclear. This study aimed to clarify the applicability of the DFM for military personnel and to investigate longitudinal relationships between the dual factors of mental health (negative factor, positive factor) and the two dimensions of meaning in life (presence of meaning, search for meaning) in military personnel.MethodsIn this study, data were collected in two waves (April and August 2023) from 227 Chinese military personnel. We constructed a dual-factor model with depression as the negative factor and subjective well-being as the positive factor, and we compared it with a single-factor model to determine if DFM could be applied to military personnel. We also constructed a cross-lagged model to investigate longitudinal relationships between depression, subjective well-being, presence of meaning, and search for meaning.ResultsAccording to the findings, military personnel fit better with the DFM than with the single-factor model. Cross-lagged analysis results revealed that both the presence of meaning and the search for meaning negatively predicted depression and positively predicted subjective well-being.ConclusionsThe DFM had good applicability among military personnel. Both the presence of meaning and the search for meaning could improve military mental health, suggesting that both dimensions of meaning in life may be potential targets for improving military mental health.

Factor Structure and Reliability of the Lithuanian Version of the Public Speaking Anxiety Scale

Social Anxiety Disorder (SAD) is especially prevalent among young individuals aged 18–25 and significantly affects daily social activities and interpersonal relationships. Public Speaking Anxiety (PSA), a subtype of SAD, is a widespread concern that affects one in five individuals. The study focuses on the Public Speaking Anxiety Scale (PSAS), with the aim of assessing the factor structure and reliability of the Lithuanian version (PSAS-LT). The PSAS-LT, administered to 227 participants aged 18–25, comprises 17 Likert-scaled items, evaluating cognitive, behavioral, and physiological aspects of PSA. Three models were tested: a single-factor model, a three-factor model and a single factor model with positive and negative item wording factors model. Results indicate less than desirable fit for the single, and three-factor models, suggesting the need for alternative structures. The model that included a single factor as well as positive and negative item wording factors demonstrated a reasonably good fit. The diagnostic validity confirmed that the PSAS-LT effectively differentiated between participants with and without history of anxiety disorders. The total score of the PSAS-LT had excellent internal consistency. Despite limitations, including convenience sampling and nonrepresentative sample, the study contributes valuable insights into refining the understanding of PSA assessment features, emphasizing the importance of considering response patterns. Future research should validate these findings with larger and more diverse samples of the Lithuanian population.

Sensory Phenomenon Assessment Scale: a new tool for assessment of tic-associated sensations.

Sensory symptoms linked to tic disorder (TD) are challenging to quantify via self- or parent-reported measures. The current study aimed to develop a novel observer-rated semi-structured interview, namely, the Sensory Phenomenon Assessment Scale (SPAS), to aid clinical evaluation on symptoms of TD among children. To test its psychometric properties, tic, premonitory urge (PU), and obsessive-compulsive symptoms (OCS) were also assessed in 223 children via the Yale Global Tic Severity Scale (YGTSS), the Premonitory Urge for Tic Scale (PUTS), and the Children's Yale-Brown Obsessive-Compulsive Scale (CY-BOCS). Factor analysis and internal consistency test were carried out using data from TD-diagnosed individuals. Good internal consistency and test-retest reliability were observed. Criterion validity was established by significant correlations between the PUTS, the YGTSS, the CY-BOCS, and scores of the SPAS. Factor analyses supported a single-factor model of the SPAS, in which the five items each showed a factor loading above 0.6. This study demonstrated that the SPAS is reliable and valid and, thus, can serve as a good and concise measure of clinical symptoms among children and adolescents with TD.

The Response of Soil Respiration to Temperature and Humidity in the Thermokarst Depression Zone of the Headwater Wetlands of Qinghai Lake.

As the climate warms, the thickening of the active layer of permafrost has led to permafrost melting and surface collapse, forming thermokarst landforms. These changes significantly impact regional vegetation, soil physicochemical properties, and hydrological processes, thereby exacerbating regional carbon cycling. This study analyzed the relationship between soil respiration rate (Rs), soil temperature (T), and volumetric water content (VWC) in the thermokarst depression zone of the headwater wetlands of Qinghai Lake, revealing their influence on these soil parameters. Results showed a significant positive correlation between soil temperature and Rs (p < 0.001), and a significant negative correlation between VWC and Rs (p < 0.001). The inhibitory effect of VWC on Rs in the thermokarst depression zone was stronger than under natural conditions (p < 0.05). Single-factor models indicated that the temperature-driven model had higher explanatory power for Rs variation in both the thermokarst depression zone (R2 = 0.509) and under natural conditions (R2 = 0.414), while the humidity-driven model had lower explanatory power. Dual-factor models further improved explanatory power, slightly more so in the thermokarst depression zone. This indicates that temperature and humidity jointly drive Rs. Additionally, during the daytime, temperature had a more significant impact on Rs under natural conditions, while increased VWC inhibited Rs. At night, the positive correlation between Rs and temperature in the thermokarst depression zone increased significantly. The temperature sensitivity (Q10) values of Rs were 3.32 and 1.80 for the thermokarst depression zone and natural conditions, respectively, indicating higher sensitivity to temperature changes at night in the thermokarst depression zone. This study highlights the complexity of soil respiration responses to temperature and humidity in the thermokarst depression zone of Qinghai Lake's headwater wetlands, contributing to understanding carbon cycling in wetland ecosystems and predicting wetland carbon emissions under climate change.

Unidimensional versus multidimensional: A bifactor factor structure of the Self-Stigma Scale-Short (SSS-S) among U.S. adults with psychiatric disabilities.

This study aimed to examine the psychometric properties of the English version of the Self-Stigma Scale-Short (SSS-S), a nine-item self-report self-stigma measurement, among U.S. adults with psychiatric disabilities. We obtained reliability and validity evidence from a sample of 275 adults with psychiatric disabilities. Exploratory factor analysis (EFA; n = 139) yielded a two-factor solution that accounts for 64.97% of the variance. Confirmatory factor analysis (CFA; n = 136) was conducted to compare alternative solutions, including a single-factor model, a two-correlated-factor model, a three-correlated-factor model, and a bifactorial model. The CFA results supported the bifactor S·I - 1 model as a superior latent factor structure for the SSS-S. The coefficient ω of the SSS-S was .94, indicating excellent internal reliability. Concurrent validity of the SSS-S was supported by significant positive correlations with societal stigma and psychiatric symptom severity, and negative correlations with psychiatric disability acceptance, general self-efficacy, and hope. The overall findings concluded that the English version of the SSS-S demonstrated reliable and valid scores and a primarily unidimensional structure of self-stigma among U.S. adults with psychiatric disabilities. Given the adverse impact of self-stigma and its relationships with recovery-related constructs shown in this study, the routine use of the SSS-S is recommended in psychiatric rehabilitation settings. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Validation of the Korean version of the Summated Xerostomia Inventory among older adults residing in nursing homes

BackgroundXerostomia is commonly experienced by older individuals. We sought to develop and evaluate the reliability and validity of the Korean version of the Summated Xerostomia Inventory (K-SXI) among older adults residing in long-term care facilities (LTCFs) in Korea.MethodsIn this secondary data analysis study using cross-sectional data, a cross-cultural adaptation process was conducted for the Korean version before data collection. Data collection was conducted from July 2021 to January 2022, targeting 544 older adults in 16 LTCFs. Data analysis included intraclass correlation coefficient (ICC) for test–retest reliability, and Cronbach’s α for internal consistency reliability. Exploratory and confirmatory factor analyses were used to verify construct and convergent validity. Test–retest analysis was performed 6 weeks after baseline. Convergent and concurrent validities were assessed with age group and the xerostomia standard single question, respectively.ResultsA total of 544 older adults participated in this study. The mean of total K-SXI score was 11.70 (standard deviation, 4.96) points. The ICC value was calculated to be 0.90, and Cronbach’s α of K-SXI was 0.92. Exploratory factor analysis revealed a single factor, explaining 74.8% of the total variance, however, some goodness-of-fit indices of the single factor model were found to be unsuitable in confirmatory factor analysis. The convergent and concurrent validity were supported.ConclusionThe present study provides evidence supporting the validity and reliability of the K-SXI for measuring xerostomia in institutionalized older adults in Korea.