General Factor Research Articles

The employee-related antecedents of work performance: exploring a three-sided model for Human Resources Management

PurposeThis research paper aims to integrate the employee-related factors that empirical literature considers antecedents of performance (skills, work motivation, personal characteristics) into a multiple linear regression model, and to test such a model in order to measure the level of each individual factor on the performance.Design/methodology/approachQuantitative, multisource research approach. After testing the validity of the model with a Confirmatory Factor Analysis, this research applies the multiple linear regression model Work performance = a(Skills) + b(Work Motivation) + c(Personal Characteristics) + e(constant) to two different samples of workers: chemical technicians (N = 63) and salespeople (N = 61).FindingsThis study confirms the factorial structure of the antecedents of work performance, showing that skills, motivation, and personal characteristics are three general employee-related factors underlying work performance. The statistical analysis highlights a variance in performance between 40 and 65% explained by employee-related factors, hence leaving 35–60% as due to factors outside the model (firm/environment-related and/or job-related factors, or other skills and personal characteristics not considered in the model). The study also highlights that employee-related factors sometimes affect performance differently than job designers' expectations, and sometimes even negatively.Research limitations/implicationsThe equation was tested on two case studies, so further explorations are needed. Furthermore, the approach adopted is inductive thus describing performance as it is, not as it should be. Therefore, it explains the best actual performance of workers, not the ideal performance.Practical implicationsThe equation tested here represents a simple and valid tool to guide many Human Resource Management practices, such as; selection, training, development, and career orientation.Social implicationsFindings provide a valid indication for designing and managing human resource management systems more even-handedly, from an organizational and employee point of view. In doing so, it drives organizations towards a better Person/Job fit.Originality/valueThe study represents one of the first attempts to take into consideration multiple factors simultaneously in explaining work performance.

Psychometric examination of the Multidimensional Psychological Flexibility Inventory Short Form (MPFI-24) and the Psy-Flex Spanish versions in individuals with chronic pain.

Acceptance and Commitment Therapy (ACT) has been found to be beneficial for individuals dealing with chronic pain. The theoretical mechanisms of change proposed by ACT are based on the Hexaflex model. To comprehensively reflect this model, the Multidimensional Psychological Flexibility Inventory (MPFI) and Psy-Flex have been developed. The study aimed to adapt the MPFI-24 and the Psy-Flex for Spanish-speaking populations with chronic pain and to examine their dimensionality, internal consistency, convergent validity and incremental validity. This cross-sectional study involved 309 Spanish-speaking adults with chronic pain who completed an online survey. The majority of the participants were women (88.3%). The ages ranged from 18 to 79 years. Factor analysis showed that the Spanish version of the MPFI-24 has 12 factors, consisting of six flexibility and six inflexibility factors, similar to the original version, but lacking second-order general factors. The Psy-Flex demonstrated a single-factor structure, maintaining the general factor of psychological flexibility seen in the original version. The MPFI-24 showed good internal consistency and adequate convergent validity, with the exception of the Acceptance and Experiential Avoidance subscales. The Psy-Flex showed good internal consistency and convergent validity. Notably, both the MPFI-24 and Psy-Flex scores significantly explained additional variance in psychological distress beyond other ACT-related measures of Hexaflex processes; however, only the Psy-Flex explained pain interference. The Spanish adaptations of the MPFI-24 and Psy-Flex are valid and reliable instruments for assessing the Hexaflex model processes in Spanish-speaking adults with chronic pain. Practitioners and researchers in chronic pain will find the Spanish versions of the MPFI-24 and the Psy-Flex here, along with recommendations for their use and scoring based on a robust psychometric rationale. It should be noted that these measures surpass the Chronic Pain Acceptance Questionnaire (CPAQ) and the Psychological Inflexibility in Pain Scale (PIPS), which are considered gold standards in chronic pain assessment.

Measurement invariance of the Suicide Cognitions Scale-Revised (SCS-R).

The Suicide Cognitions Scale-Revised (SCS-R) is a unidimensional measure of suicidal cognitions theorized to assess the suicide belief system. Several solutions have been proposed for the Suicide Cognitions Scale and SCS-R (e.g., bifactor model with two specific factors, bifactor model with two specific factors, three correlated factors model). Research indicates the endorsement of thoughts of suicide and suicide-related cognitions varies across demographics. Thus, the current investigation tested the measurement invariance (MI) of the SCS-R across gender, race, and sexual orientation within these proposed solutions and a unidimensional model. A national sample of N = 10,625 adults completed an online survey that included the SCS-R and self-report measures of demographics. Results indicated that the bifactor model with three specific factors, the bifactor model with two specific factors, and the three correlated factors models achieved scalar invariance across gender, race, and sexual orientation; a unidimensional model was not scalar invariant by gender. Tests of latent mean differences revealed significant differences in the general factor (i.e., suicidal belief system) and the specific unlovability, unbearability, and unsolvability factors between a few demographic groups. Implications for theory, measurement, and modeling are discussed. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Validation of the Interpersonal Relationships in Eating Disorders (IR-ED) Scale in an Eating Disorder Sample.

Interpersonal problems have been identified as a plausible mechanism underlying the onset and maintenance of eating disorders. The Interpersonal Relationships in Eating Disorders (IR-ED) scale is the first eating disorders-specific measure of interpersonal problems, which was developed in a nonclinical sample. The aims of the current study were to (a) confirm the factor structure of the IR-ED within a large clinical sample, (b) investigate measurement invariance of the IR-ED across nonclinical and clinical samples, (c) examine the convergent validity of the IR-ED using a generic measure of interpersonal problems, and (d) investigate the incremental clinical utility of the IR-ED in uniquely predicting eating disorder symptomatology. Treatment-seeking individuals (N = 437) completed the IR-ED at their initial assessment appointment at a specialist eating disorder outpatient service. A multiple-group confirmatory factor analysis supported an invariant bifactor structure comprising a general interpersonal problems factor and two group factors-Avoidance of Body Evaluation and Food-Related Interpersonal Tension. Convergent validity was demonstrated by a large, statistically significant correlation with a generic measure of interpersonal problems (r = 0.62, p < 0.001). A series of structural equation models further revealed unique incremental predictive utility of the IR-ED for eating disorder symptomatology. The IR-ED has strong psychometric properties and may prove beneficial in the assessment, formulation, and treatment of eating-specific interpersonal problems among patients with eating disorders.

Somatic symptoms in the general population of Spain: Validation and normative data of the Patient Health Questionnaire-15 (PHQ-15)

ObjectiveThe Patient Health Questionnaire (PHQ-15) has been widely used to assess somatic symptoms. This study aimed to analyze the psychometric properties of the Spanish version of the PHQ-15, its structure and score distribution across demographic variables in a Spanish sample. In addition, we examined variations in somatic symptoms among different demographic subgroups. Method1495 individuals from the Spanish population answered a series of self-reported measures, including PHQ-15. To examine the factorial structure of the PHQ-15, Confirmatory Factor Analysis (CFA) was performed. Additionally, a bifactor CFA model was examined using the Exploratory Structural Equation Modeling (ESEM) framework. ResultsWomen showed more somatic symptoms than men, and younger individuals showed more somatic symptoms than the older ones. It was also revealed positive associations between somatic symptoms and levels of depression, anxiety, and suspiciousness, while negative associations were found between somatic symptoms and perceived resilience and happiness. Regarding the factorial structure of the PHQ-15, although the one-factor and bifactor models were suitable, the bifactor model underscores the presence of a robust general factor. LimitationsIt is a cross-sectional study, not including non-institutionalized individuals. ConclusionSomatic symptoms are more frequent in women and younger individuals. Furthermore, the presence of physical symptoms is associated to other psychological aspects, such as depression or anxiety. Finally, bifactor model was the most appropriate to explain the factorial structure of the PHQ-15.

Factor structure and invariance of the 12-item general health questionnaire (GHQ-12) for a sample of people in situations of homelessness

ABSTRACT People in situations of homelessness (PSH) have high levels of psychological impairment. Few studies have analyse the suitability of the instruments used to measure these levels. The aim of this study was to analyse the factorial structure and invariance (sex, age, nationality and housing status) of the 12-item General Health Questionnaire (GHQ-12) for a sample of PSH (n = 603) living in the Community of Madrid (Spain). A quantitative study was designed using a survey that include the GHQ-12 and other health measures (self-assessed health and diagnosis of mental illness). A comparison of three models (unidimensional, two correlated latent factors and bi-factor) showed that the bi-factor model provided the best goodness-of-fit indicators. A latent structure was identified in which each item was loaded into a general factor measuring a single GHQ-12 factor. The number of latent factors and the structure of factorial loads for GHQ-12 items were similar between groups. The GHQ-12 can be used as a screening instrument rather than as an outcome measure in different clinical dimensions. It is an appropriate instrument for assessing psychological impairment among PSH regardless of sex, age, nationality or housing status.

Death anxiety scale (DAS): internal structure and factorial invariance in Peruvian adults

Background Studies have this reported the presence of death anxiety, ranging from near-death experiences to physically ill people, to a simple thought about death, as well as when it is associated with states of loneliness. The Templer’s Death Anxiety Scale (DAS), based on Eysenk’s incubation theory, has been adapted and validated in different contexts and is still insufficient in countries such as Peru. This study aimed to determine the psychometric properties of the DAS, its internal structure, and factorial invariance. Methods An online scale was used in 1248 Peruvians aged between 18 and 70 years (M= 27.37, SD= 11.29) from all regions. DAS was validated using exploratory factor analysis (EFA), confirmatory factor analysis (CFA), convergent validity, measurement invariance, and internal consistency (reliability). Results Psychometric properties were found with adequate values in its structure and validity based on the internal structure through exploratory factor analysis, where it was found that the components of the scale are interrelated and the data matrix is factorizable. model of three specific factors and a general factor is presented, which is consistent with the theory and has practical utility, revealing adequate statistical values that reflect acceptable levels of reliability. Finally, there was fairness according to sex and age group of the scale by means of factorial invariance analysis. Conclusions Our results indicate adequate psychometric properties and facilitate a better data collection process for future research.

Assessment of psychometric performance for the Chinese version of the Brief Inventory of Perceived Stress integrating exploratory graph analysis and confirmatory factor analysis.

This study was to evaluate measurement properties of the Chinese version of the Brief Inventory of Perceived Stress (BIPS-C) and confirm possible solutions for measuring the constructs underlying perceived stress. A total of 1356 community residents enrolled and were randomly split into two halves. The first half was used to explore the underlying constructs of the BIPS-C by exploratory graph analysis (EGA) and the second half was used to compare and confirm the constructs by confirmatory factor analysis (CFA). The EGA identified a one-factor model of the BIPS-C with an accuracy of 99.3%. One-factor, three-factor, second-order, and bifactor models were compared by CFAs. The bifactor model with one general and three specific factors was found to be the most adequate [comparative fit index (CFI) = 0.990; Tucker-Lewis index (TLI) = 0.979; root mean square error of approximation (RMSEA) = 0.058] and was superior to the other models. The related bifactor indices showed a stronger existence of the general factor. The bifactor model of the BIPS-C also showed adequate internal consistency with McDonald's omega and omega subscales ranging from moderate to strong (0.677-0.869). The BIPS-C demonstrates sufficient measurement properties for assessing general perceived stress.

High infection rates and risk‐adapted prevention strategies in contemporary pediatric allogeneic hematopoietic stem cell transplantation

AbstractWith recent changes in hematopoietic stem cell transplantation (HSCT) practices, such as the increasing use of alternative donors and ex vivo T‐cell depletion, how various risk factors interplay and affect the timeline of infections have not been well elucidated. We retrospectively reviewed the first 100 consecutive HSCT from April 2019 to October 2021 in the only pediatric HSCT center in Hong Kong. We found that the vast majority of the allogeneic transplant recipients (69/74, 93.2%) had infections after HSCT, amongst which bacterial, viral, and fungal infection rates were 35.1%, 90.5%, and 9.5%, respectively. In contrast, only 30.8% (8/26) of autologous transplant recipients had infections (rate of bacterial, viral, and fungal infection were 19.2%, 15.4%, and 3.8%, respectively). Human herpesvirus 6 (HHV‐6) and BK virus (BKV) typically occurred early after HSCT, adenovirus (ADV) and varicella zoster virus (VZV) thereafter, and cytomegalovirus (CMV) and Epstein–Barr virus (EBV) throughout the entire 2.5‐year observation period. Ex vivo T‐cell depletion was a general risk factor for viral infection with HHV‐6 (hazard ratio [HR] = 3.03), BKV (HR = 3.36), CMV (HR = 4.45), and EBV (HR = 7.15); all p &lt; 0.02. Cancer in second‐complete remission compared with first‐complete remission was a risk factor for bacterial infection (OR = 6.0, 95% CI = 1.12–32.2, and p = 0.037). Patients with gut graft‐versus‐host disease were at risk for fungal infections (OR = 12.3, 95% CI = 1.33–114.4, and p = 0.027). The infection‐related mortality rate was 10.0%, which occurred only in allogeneic HSCT patients with hematological malignancies receiving cord blood (n = 4) or haploidentical HSCT (n = 6). Collectively, our findings in pediatric patients after contemporary HSCT support both time‐dependent and risk‐adapted measures against infective complications to improve transplant outcome.

Performance of the Wisconsin Card Sorting Test in Oncopediatric Patients in an Oncology Unit in Cali, Colombia: A Cross-Sectional Observational Study.

In 2020, the prevalence of cancer rose to 844,778 cases among the population aged 0-19 years. Approximately 90% of individuals under 18 years of age reside in low- and middle-income countries, where cancer survivors report adverse outcomes that negatively impact their general health, emotional state, and external factors such as academic performance due to the effect of these outcomes on executive functions. The Wisconsin Cart Sorting Test (WCST) is the gold standard for evaluating executive functioning. Therefore, this article (1) reports the performance of the Wisconsin Card Sorting Test (WCST) in oncopediatric patients from Cali, Colombia; (2) indicates the reliability of the WCST; (3) describes the association between cancer type and executive functioning in patients; (4) describes the differences between patients with various executive deficits and their executive total scores; and (5) describes the association between cancer type and the presence of brain deficits based on the WCST. In this cross-sectional observational study, 24 oncopediatric patients were interviewed and evaluated via the WCST. The mean age was 12.08 years (SD 3.98); 20.8% of the patients were women, 70.8% had a primary diagnosis of leukemia, 8% exhibited acquired brain deficits, and more than 75% displayed adequate functional indicators of executive functions. Robust statistics were employed to explore the differences between the types of diagnosis and performance in executive functions, and no statistically significant differences were found (p = 0.156). We found that the WCST has a reliable Cronbach's α of 0.804. Oncopediatric patients without brain deficits presented strong results in terms of executive functions (p = 0.002), with a moderate effect size (0.727). The WCST is reliable for discriminating executive functioning among pediatric cancer patients. The evidence suggests that there were no differences in the executive functioning of the participants based on the types of cancer being evaluated.

The Czech version of the Teacher Efficacy for Inclusive Practice (TEIP) scale: validation and psychometric analysis of the instrument with primary school teachers

ABSTRACT The aim of this study was to conduct a detailed psychometric analysis of the Czech version of the internationally used Teacher Efficacy for Inclusive Practices Scale (TEIP) questionnaire. Using a sample of 1434 teachers (Nwomen 88%) from 140 primary schools in the Czech Republic, a confirmatory factor analysis was used to confirm the hierarchical structure of the questionnaire with three correlated dimensions representing the general higher-order factor of the TEIP. The 6-item subscales Efficacy in using inclusive instructions, Efficacy in managing behaviour and Efficacy in collaboration (ω ≥ 0.8) and the overall 18-item TEIP (ω ≥ 0.9) all showed acceptable reliability. Convergent, discriminant, concurrent, and criterion validity of the TEIP were confirmed. Full strict invariance of the measurements was achieved for the comparison groups of teachers in terms of their age. Overall, perceived self-efficacy was found to be relatively high in relation to the implementation of inclusive practices, with teachers holding special education qualifications scoring higher on the TEIP scale compared to those without such qualifications (d Cohen = 0.5). The TEIP was shown to work well in the Czech sociocultural environment and is a reliable tool for (international) comparison and evaluation of teacher self-efficacy regarding teaching in inclusive classrooms.

Evolution of Ural cities at the turn of the 20th–21st centuries

The growth of cities and the transformation of their urban structure reflect the impact of numerous factors: economic, political, social, ideological and others. The Ural region with its concentration of larger cities is among the most urbanised in Russia. The paper explores the urbanistic processes in the Ural region at the turn of the 20th–21st centuries in the context general economic, political and moral factors. The methodological basis of the research rests on the theories of urbanisation and urban development, and the evolutionary approach. The study uses analytical, statistical, and comparative methods. The data for 1989–2022 reflecting the dynamics of urbanistic processes is taken from the Federal State Statistics Service of the Russian Federation. The boundaries of the Ural agglomerations are sourced from the official territorial and strategic planning documents. The findings indicate several trends in the transformation of the Ural settlement system and its urbanistic structure, in particular, a qualitative change of the cities’ industrial structure, a decrease in the employment in industry and a fall in the urban population, intensification of agglomerations processes and population tending to concentrate in larger cities. The indicated processes of deurbanisation and deindustrialisation of the Ural region result in the augmented share of larger cities, greater imbalance between size groups of cities. The paper is the first to describe the Ural Urban Square that encompasses four larger urban agglomerations – Ekaterinburg, Chelyabinsk, Ufa, and Perm. The paper underscores that the Ural Urban Square becomes a place of concentration of investment, human, economic, and social resources, the core of the development of the Ural macroregion and its neighboring territories.

Development and initial validation of the contemporary Chinese Familism Scale.

Familism is a core ideology in Chinese society, yet it has been understudied in this cultural context, potentially attributed to the lack of quantifiable measures. This study sought to develop a reliable and valid scale, the Contemporary Chinese Familism Scale (CCFS), to assess Chinese familism and analyze its structural and psychological characteristics in contemporary China. The scale development and validation process comprised four studies: in Study 1, literature review, qualitative interviews, and item evaluations by experts were conducted to develop the initial item pool for the CCFS; in Studies 2 and 3, item analysis, exploratory and confirmatory factor analyses, competing model comparisons, and measurement invariance tests were conducted to examine the structure underlying familism (N₁ = 958, Mage = 25.4 years; N₂ = 570, Mage = 32.01 years); in Study 4, reliability and validity assessments were conducted to further explore the psychometric properties of the final 27-item CCFS using three samples (N₂ = 570, Mage = 32.01 years; N₃ = 710, Mage = 22.37 years; N₄ = 932, Mage = 40.98 years). A bifactor structure with one general factor and five specific factors (Connection and Closeness, Offspring and Lineage, Honor and Reference, Harmony and Sacrifice, and Care and Help) demonstrated the best fit for the data and supported the multidimensionality of familism in contemporary China. Subsequent psychometric analyses provided initial evidence for the optimal psychometric properties of the CCFS. This study contributes to our understanding of the multifaceted nature of familism in contemporary China by developing a culturally sensitive scale on Chinese familism. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Polish Adaptation and Validation of the Penn State Worry Questionnaire for Children (PSWQ-C): Factor Structure, Reliability and Validity

This study presents the Polish version of the Penn State Worry Questionnaire for Children (PSWQ-C). The validation of the PSWQ-C in Poland was conducted through two studies. Study 1 examined the initial factor structure, internal consistency, and construct validity of the PSWQ-C in two samples of school students (N = 819) aged 8–19 years (M = 14.63, SD = 3.09). Study 2 involved 620 participants aged 8–19 years (M = 14.35, SD = 3.42). We conducted Confirmatory Factor Analysis to compare the initial factor structure with different models mentioned in the literature. The results suggest that the scale has good psychometric properties, including good reliability and acceptable validity. The factor structure that showed the best fit to the data consisted of one general worry factor and two method factors representing wording effects. This study is part of a broader discussion on the factor structure of the PSWQ-C. The results suggest that the questionnaire is homogeneous and measures one latent variable, worry, despite a bifactorial model being the best fit for the data. The two sub-factors do not have any psychological meaning (“non-worrying”), but are only an effect related to the positive or negative wording of the scale’s statements.

Experience of Service Questionnaire (ESQ) in children and adolescents: factor structure, reliability, validity, item parameters and interpretability of the parent version for practical use in Greece.

Health systems need tools to assess patient's experience of service, but existing tools lack reliability and validity assessment. Our aim is to investigate the factor structure, reliability, validity, item parameters and interpretability of the parent version of the Experience of Service Questionnaire (ESQ) for practical use in Greece. A total of 265 caregivers that were using mental health services in Greece participated in this study as part of the Nationwide cross-sectional survey from the Child and Adolescent Mental Health Initiative (CAMHI). Confirmatory Factor Analysis was used to test factor structure. Reliability of all models were measured with omega coefficients. Tobit regression analysis was used to test for convergent and discriminant validity with specifically designed questions. Item parameters were assessed via Item Response Theory. Interpretability was assessed by means of IRT-based scores. We found that ESQ is best represented and scored as a unidimensional construct, given potential subscales would not have enough reliability apart from a general factor. Convergent and discriminant validity was demonstrated, as caregivers who perceived that their child benefited from the received mental health care had 6.50 higher summed scores (SMD=1.14, p<0.001); while those who believed that their child needed additional help had 5.08 lower summed scores on the ESQ (SMD=-0.89, p<0.001). Average z-scores provided five meaningful categories of services, in terms of user satisfaction, compared to the national average. Our study presents evidence for the reliability and validity of the ESQ and provides recommendations for its practical use in Greece. ESQ can be used to measure experience of service and might help drive improvements in service delivery in the Greek mental health sector.

A cross-national investigation of psychosis-like experiences in five European countries included in the E-CLECTIC study: Psychometric challenges in studying their measurement

BackgroundPsychotic-like experiences (PLEs) are subtle, subclinical perturbations of perceptions and thoughts and are common in the general population. Their characterisation and unidimensionality are still debated. MethodsThis study was conducted by the Electronic–halluCinations-Like Experiences Cross-culTural International Consortium (E-CLECTIC) and aimed at measuring the Community Assessment of Psychic Experiences (CAPE) factorial structure across five European countries (Belgium; Czech Republic, Germany; Greece, and Spain) and testing the adequacy of the unidimensional polytomous Rasch model of the tool via Partial Credit Model (PCM) of the CAPE to detect people with a high risk for developing psychosis. ResultsThe sample included 1461 participants from the general population. The factorial analysis confirmed the best fit for the bifactor implementation of the three-factor model, including the positive, negative and depressive dimensions and a general factor. Moreover, the unidimensional polytomous Rasch analysis confirmed that CAPE responses reflected one underlying psychosis proneness. ConclusionsThe study proved that the CAPE measures a single latent dimension of psychosis-proneness. The CAPE might help locate and estimate psychosis risk and can be used as a screening tool in primary care settings/education settings.

Are Children Following High Trajectories of Disruptive Behaviors in Early Childhood More or Less Likely to Follow Concurrent High Trajectories of Internalizing Problems?

The developmental association between disruptive behaviors (DBs: hyperactivity-impulsivity, non-compliance, physical aggression) and internalizing problems in early childhood is not well understood and has generated competing hypotheses and mixed results. Using a person-centered strategy, the present study aimed to examine concurrent trajectories of DBs and trajectories of internalizing problems from age 1.5 to 5 years in a population-representative sample (N = 2057; 50.7% boys). Six trajectories of DBs and three trajectories of internalizing problems, based on parent reports and obtained via latent growth modeling across five periods of assessment, were used as longitudinal indicators of each type of behaviors. Children following low or moderate trajectories served as the reference class. Compared to children in the reference class, those in trajectory classes characterized by high levels of co-occurring DBs (OR = 6.60) and, to a lesser extent, those in single high DB classes (OR = 2.78) were more likely to follow a high trajectory of internalizing problems simultaneously. These results support a multiple problem hypothesis regarding the association between DBs and internalizing problems, consistent with a developmental perspective that includes a general factor underpinning different psychopathologies. These findings highlight the importance of considering the co-occurrence between DBs and internalizing problems when studying either construct in children.

Genetic analyses point to alterations in immune-related pathways underpinning the association between psychiatric disorders and COVID-19.

Current literature suggests that people with psychiatric disorders have a higher risk of COVID-19 infection and a worse prognosis of the disease. We aimed to study the genetic contribution to these associations across seven psychiatric disorders as well as a general psychopathology factor (P-factor) and determine whether these are unique or shared across psychiatric disorders using statistical genetic techniques. Using the largest available genome-wide association studies (GWAS), we found a significant genetic overlap between depression, ADHD, PTSD, and the P-factor with both COVID-19 infection and hospitalization, and between anxiety and COVID-19 hospitalization. We used pairwise GWAS to examine this overlap on a fine-grained scale and identified specific regions of the genome shared between several psychiatric disorders, the P-factor, and COVID-19. Gene-based analysis in these genomic regions suggested possible links with immune-related pathways such as thyroid homeostasis, inflammation, and stress response. Finally, we show preliminary evidence for causal associations between depression, ADHD, PTSD, and the P-factor, and higher COVID-19 infection and hospitalization using Mendelian Randomization and Latent Causal Variable methods. Our results support the hypothesis that the relationship between psychiatric disorders and COVID-19 risk is likely due to shared alterations in immune-related pathways and is not a result of environmental factors alone, shedding light on potentially viable therapeutic targets.

Efficient enhancement of low-rank tensor completion via thin QR decomposition.

Low-rank tensor completion (LRTC), which aims to complete missing entries from tensors with partially observed terms by utilizing the low-rank structure of tensors, has been widely used in various real-world issues. The core tensor nuclear norm minimization (CTNM) method based on Tucker decomposition is one of common LRTC methods. However, the CTNM methods based on Tucker decomposition often have a large computing cost due to the fact that the general factor matrix solving technique involves multiple singular value decompositions (SVDs) in each loop. To address this problem, this article enhances the method and proposes an effective CTNM method based on thin QR decomposition (CTNM-QR) with lower computing complexity. The proposed method extends the CTNM by introducing tensor versions of the auxiliary variables instead of matrices, while using the thin QR decomposition to solve the factor matrix rather than the SVD, which can save the computational complexity and improve the tensor completion accuracy. In addition, the CTNM-QR method's convergence and complexity are analyzed further. Numerous experiments in synthetic data, real color images, and brain MRI data at different missing rates demonstrate that the proposed method not only outperforms in terms of completion accuracy and visualization, but also conducts more efficiently than most state-of-the-art LRTC methods.

The Comparison of Several Factorial Structures of the Cornell Critical Thinking Test Level Z

"The Cornell Critical Thinking Test (CCTT) level Z is a broadly applied instrument for the measurement of undergraduate, gifted students’ and adults’ critical thinking abilities, however, there is a lack of studies in the literature investigating its factorial structure. The test developers emphasize the interpretation of the test results as a general critical thinking factor, including different cognitive abilities, but also highlight the overlap between the items of the subfactors. The aim of the study is the investigation of internal consistency, the comparison of different factorial structures (unidimensional, correlated, and hierarchical models), and gender invariance testing of the CCTT level Z. Hungarian-speaking undergraduate students participated in the study (N = 825). For the confirmatory factor analysis (CFA) the Mplus version 8.7, with weighted least squares mean and variance adjusted estimation was used. Measurement invariance of the test across genders was analyzed using Muthén’s two-step procedure for dichotomous data. The results indicated that the correlated four-factor and second-order structures of the test exceeded the acceptable model fit criteria. Post hoc inspection was conducted on the second-order four-factor model, indicating a shortened 22-item version of the test (with a general critical thinking factor, including four subfactors: deduction, meaning and fallacies, induction, assumption identification) with excellent fit indices [χ2 (203) = 259.309, CFI = .967, TLI = .963, RMSEA = .018, SRMR = .056]. Configural and scalar invariance of the abbreviated Hungarian version of the test across genders were confirmed. Keywords: critical thinking, undergraduate students, confirmatory factor analysis, measurement invariance"