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Direct linkYanjing Cao; Chenchen Xu; Shan Lu; Qi Li; Jing Xiao – Psychology in the Schools, 2025
The patient health questionnaire-9 (PHQ-9) is widely utilized in assessing individuals' depression levels. Nevertheless, research regarding its factor structure and measurement invariance remains inadequate. The aim of this study was to delve into the factor structure of the PHQ-9 and to further investigate its measurement invariance across gender…
Descriptors: Factor Structure, Error of Measurement, Factor Analysis, Age Differences
Lenz, A. Stephen; Li, Chi – Measurement and Evaluation in Counseling and Development, 2022
The factor structure, measurement invariance, and internal consistency of the Patient Health Questionnaire for Depression and Anxiety (PHQ-4) was examined with a rural, predominately Hispanic sample (N = 711). Findings supported use of a one-factor model across gender, age groups, and Spanish-speaking groups. Counseling practice and research…
Descriptors: Psychometrics, Error of Measurement, Patients, Questionnaires
Fite, Paul J.; Greening, Leilani; Stoppelbein, Laura; Fabiano, Gregory A. – Assessment, 2009
Research linking psychopathic tendencies to childhood behavior problems is predicated on the assumption that the findings are based on using psychometrically sound measures of psychopathic tendencies. Although evaluated with community samples, the psychometric properties of such measures have not been evaluated with inpatient clinical populations…
Descriptors: Factor Analysis, Factor Structure, Screening Tests, Patients
Hoekstra, Rosa A.; Bartels, Meike; Cath, Danielle C.; Boomsma, Dorret I. – Journal of Autism and Developmental Disorders, 2008
The factor structure of the Dutch translation of the Autism-Spectrum Quotient (AQ; a continuous, quantitative measure of autistic traits) was evaluated with confirmatory factor analyses in a large general population and student sample. The criterion validity of the AQ was examined in three matched patient groups (autism spectrum conditions (ASC),…
Descriptors: Autism, Models, Factor Structure, Reliability
Olatunji, Bunmi O.; Williams, Nathan L.; Tolin, David F.; Abramowitz, Jonathan S.; Sawchuk, Craig N.; Lohr, Jeffrey M.; Elwood, Lisa S. – Psychological Assessment, 2007
In the 4 studies presented (N = 1,939), a converging set of analyses was conducted to evaluate the item adequacy, factor structure, reliability, and validity of the Disgust Scale (DS; J. Haidt, C. McCauley, & P. Rozin, 1994). The results suggest that 7 items (i.e., Items 2, 7, 8, 21, 23, 24, and 25) should be considered for removal from the DS.…
Descriptors: Measures (Individuals), Patients, Item Analysis, Factor Structure
Herzberg, Philipp Yorck; Glaesmer, Heide; Hoyer, Jurgen – Psychological Assessment, 2006
The internal structure of the revised Life Orientation Test (LOT-R, German version; M. F. Scheier, C. S. Carver, & M. W. Bridges, 1994) was analyzed in a sample of 46,133 participants who ranged in age from 18 years to 103 years. Confirmatory factor analysis showed that dispositional optimism, as measured by the LOT-R, is bidimensional, …
Descriptors: Psychometrics, Patients, Factor Analysis, Factor Structure
