Cross-Cultural Measurement Invariance in the Personality Inventory for DSM-5(✰)

The Alternative Model of Personality Disorders: Assessment, Convergent and Discriminant Validity, and a Look to the Future

The Alternative Model of Personality Disorders (AMPD) is a dimensional, empirically based diagnostic system developed to overcome the serious limitations of traditional categories. We review the mounting evidence on its convergent and discriminant validity, with an incursion into the less-studied ICD-11 system. In the literature, the AMPD's Pathological Trait Model (Criterion B) shows excellent convergence with normal personality traits, and it could be useful as an organizing framework for mental disorders. In contrast, Personality Functioning (Criterion A) cannot be distinguished from personality traits, lacks both discriminant and incremental validity, and has a shaky theoretical background. We offer some suggestions with a view to the future. These include removing Criterion A, using the real-life consequences of traits as indicators of severity, delving into the dynamic mechanisms underlying traits, and furthering the integration of currently disengaged psychological paradigms that can shape a sounder clinical science.

Examining Measurement Invariance in the Personality Inventory for DSM-5 Brief Form Across Sexual and Gender Minority Status

The Personality Inventory for Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Brief Form (PID-5-BF) was developed with an assumption of invariance across sexual and gender minority (SGM) individuals. This assumption has yet to be tested empirically. Using multigroup confirmatory factor analysis, we examined measurement invariance in the PID-5-BF across the SGM status in clinical (N = 1,174; n = 254 SGM) and nonclinical (N = 1,456; n = 151 SGM) samples. Measurement invariance was supported for the PID-5-BF structure, item thresholds, and factor loadings, but not at the item intercept level. SGM individuals endorsed higher negative affectivity, antagonism, disinhibition, and psychoticism domains in both samples. In the clinical sample, adjusting for partial invariance decreased detachment and antagonism levels for SGM persons. In the nonclinical sample, adjusting for partial invariance reduced antagonism disparities in the SGM group, even rendering original group differences null. Our results support the use of the PID-5-BF in SGM populations but indicate that some measurement bias may drive observed disparities in maladaptive trait domains and, in turn, personality disorder diagnosis.

Assessing measurement invariance of the SEGUE framework among Chinese and Ghanaian patients: A cross-sectional study

Objective

Measurement invariance assesses the psychometric equivalence of a construct across groups or across time. This study aimed to find out whether the newly modified 5-point Likert scale SEGUE Framework for evaluating doctor's communication skills demonstrates measurement invariance among Chinese and Ghanaian patients.

Methods

Measurement invariance tests were conducted using two samples collected from the two cultures respectively (China: N = 598 and Ghana: N = 591). Confirmatory Factor Analysis (CFA) was used to test for the factor structure. Multiple-group CFA was used to test the measurement invariance of the SEGUE between the two samples.

Results

The same five-factor model showed acceptable model fit in both Chinese and Ghanaian samples. Cross-cultural measurement invariance tests revealed that scalar invariance was observed across the two samples.

Conclusion

Cross-cultural adaptations of instruments should exhibit measurement invariance to ensure that measures are interpreted and used consistently. Findings of our study suggest that the SEGUE Framework is invariant across the two cultures, which increases confidence in data collection and comparison.

Innovation

This is the first study to establish measurement invariance among Chinese and Ghanaians using the SEGUE Framework which assesses doctors' communication from patients' perspectives.

The Chinese version of the brief pain inventory-Facial (BPI-F) among different populations: Factor structure and measurement invariance

OBJECTIVE

This study aimed to translate and adapt the Brief Pain Inventory-Facial (BPI-F) into Chinese, proposing a validated Chinese version for clinical application.

METHODS

To evaluate the applicability of Chinese BPI-F, this study included two groups: clinical sample (406 patients with OFP) and non-clinical sample (514 college students without OFP medical history). Content validity was improved through patient interviews. Cronbach's α was used to evaluate the reliability of BPI-F in both groups. The best-fit factor structure was tested on clinical sample via exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). Convergent and discriminant validity of BPI-F was evaluated by Spearman's coefficient. Serial CFA was used to assess measurement invariance between the two groups.

RESULTS

Content validity and reliability of BPI-F were verified. EFA results support a two-factor structure, interference with general activities (1-7 items) and face-specific pain interference (8-14 items). CFA results demonstrated this two-factor structure is appropriate for different populations. Spearman results showed that BPI-F had good convergent and discriminant validity. Full measurement invariance is observed across the two groups.

CONCLUSION

The Chinese BPI-F, with two-factor structure (interference with general / orofacial functions), enables accurate assessment of functional interference caused by OFP. BPI-F has the same significance in different clinical populations, which expands its application.

CLINICAL SIGNIFICANCE

This manuscript proposed the Chinese version of the BPI-F and examined its psychometric characteristics for the first time. This validated scale provides a favorable instrument for aiding individual diagnosis and treatment for OFP patients in China.

Range Restriction Affects Factor Analysis: Normality, Estimation, Fit, Loadings, and Reliability

A sample suffers range restriction (RR) when its variance is reduced comparing with its population variance and, in turn, it fails representing such population. If the RR occurs over the latent factor, not directly over the observed variable, the researcher deals with an indirect RR, common when using convenience samples. This work explores how this problem affects different outputs of the factor analysis: multivariate normality (MVN), estimation process, goodness-of-fit, recovery of factor loadings, and reliability. In doing so, a Monte Carlo study was conducted. Data were generated following the linear selective sampling model, simulating tests varying their sample size ( N = 200 and 500 cases), test size ( J = 6, 12, 18, and 24 items), loading size ( L = .50, .70, and .90), and restriction size (from R = 1, .90, .80, and so on till .10 selection ratio). Our results systematically suggest that an interaction between decreasing the loading size and increasing the restriction size affects the MVN assessment, obstructs the estimation process, and leads to an underestimation of the factor loadings and reliability. However, most of the MVN tests and most of the fit indices employed were nonsensitive to the RR problem. We provide some recommendations to applied researchers.

Cross-cultural Study of the Personality Inventory for the DSM-5 (PID-5) across the Portuguese and the United Arab Emirates (UAE) Community and Clinical Populations

Aims

The present paper focused on compare the PID-5 mean score levels across two matched community and clinical samples of Portugal and the UAE.

Background

The generalizability and universality of the Alternative Model of Personality Disorders has been thoroughly studied through the Personality Inventory for DSM-5 (PID-5) across countries and languages. However, studies comparing Western and Middle Eastern countries are still limited, in particular those who assess the PID-5 measurement invariance.

Objectives

We examined measurement invariance of the PID-5 scales across matched Emirati and Portuguese clinical and nonclinical groups, as well as compare and contrast the PID-5 mean score levels across both countries and samples.

Methods

The Arabic and the Portuguese versions of the PID-5 was administered to Emirati community participants (N = 300, 80% women and 20% men, M_age = 27.95) which were matched with Portuguese community participants (N = 300, 80.3% women and 19.7% men, M_age = 28.96), as well as clinical participants of the UAE (N = 150, 61.3% women and 38.7% men, M_age = 31.29) and Portugal (N = 150, 52% men and 48% women, M_age = 44.97). We examined measurement invariance through an unrestricted Factor Analysis based program, and mean scores levels were compared and analyzed.

Results

Our findings supported the PID-5 measurement invariance across the Emirati and Portuguese clinical samples pointing to the universality and generalizability of the Alternative Model of Personality Disorders. The Emirati psychiatric sample exhibited somehow higher results than the Portuguese psychiatric participants, albeit the small effect size for most of the PID-5 scales.

Conclusion

Further research is needed to examine the applicability of the PID-5 across non-clinical representative samples of Portugal and the UAE, and other Middle Eastern countries.