psychometrics

BackgroundThe Somatic Symptom Scale-8 (SSS-8) is a brief self-report instrument assessing somatic symptom burden derived from the PHQ-15. The aims of the present study were providing updated population norms for Germany based on a new representative sample and enabling a direct comparison with the original 2012 normative sample. In addition, the study aimed to examine the psychometric properties …

IntroductionThe Morisky Medication Adherence Scale (MMAS-8) is widely used to assess medication adherence, yet its psychometric properties have not been evaluated in Ecuador.ObjectiveThis study examined the reliability, factorial structure, and convergent validity of the MMAS-8 in Ecuadorian patients diagnosed with neuropsychiatric disorders.ResultsA total of 440 patients with neuropsychiatric di…

ObjectiveTo refine the Chinese version of the Dimensional Anhedonia Rating Scale (DARS) and evaluate the psychometric properties of the Revised Chinese DARS (RC-DARS) in a large sample of first-visit psychiatric outpatients.MethodsThe study was conducted in two sequential phases at a specialized psychiatric hospital. In Phase I (n = 277), the existing Chinese DARS underwent semantic and cultural …

BackgroundDimensional approaches to psychiatric assessment are increasingly used to complement categorical diagnoses. The DSM–TR Level 1 Cross-Cutting Symptom Measure (DSM-XC) assesses symptoms across psychopathology domains, but its latent structure remains unexplored in large, real-world psychiatric outpatient populations, limiting guidance on how clinicians interpret and apply results.MethodsW…

BackgroundMental health assessment has traditionally relied on symptom-based measures of depression and anxiety. Although widely used, such measures may overlook individuals’ everyday experiences and lifestyle contexts that are closely related to psychological well-being. Grounded in the Seven-Dimensional Time Theory (SDTT), the present study aimed to develop and validate the Seven-Dimensional Ti…