Browsing by Subject "Test-retest"

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    A reliability generalization meta-analysis of the dimensional obsessive-compulsive scale
    (2021-02) Rubén López-Nicolás; María Rubio-Aparicio; Carmen López-Ibáñez; Julio Sánchez-Meca; López Nicolás, Rubén; Rubio Aparicio, María; López-Ibáñez, Carmen; Sánchez Meca, Julio; Psicología Básica y Metodología
    Background: The Dimensional Obsessive-Compulsive Scale (DOCS) is a well-established tool for assessing obsessive-compulsive symptomatology. A reliability generalization meta-analysis was conducted to estimate the average reliability of DOCS scores and how reliability estimates vary according to the composition and variability of samples, to identify study characteristics that can explain its variability, and to estimate the reliability induction rate. Method: A literature search produced 86 studies that met the inclusion criteria. Results: For the DOCS total scores, an average alpha coefficient of .925 was found (95% CI [.920,.931]), as well as mean alphas of .881, .905, .913, and .914 for Contamination, Responsibility, Unacceptable Thoughts, and Symmetry subscales, respectively. Moderator analysis showed that internal consistency fell signifi cantly the more clinical and subclinical participants there were in the sample, and the larger the mean score in the sample for the total scores. The most important moderator variables for the subscales were the standard deviation and the mean of the scores. Conclusions: The DOCS scores exhibited excellent internal consistency reliability for both total score and subscale scores and DOCS is suitable both for research and clinical purposes.
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    A Reliability Generalization Meta-Analysisofthe Padua Inventory-Revised (PI-R)
    (Elsevier Inc., 2021-10-11) Nuñez-Nuñez, Rosa María; Rubio-Aparicio, María; Marín-Martínez, Fulgencio; Sanchez-Meca, Julio; Lopez-Pina, Jose Antonio; López-López, José Antonio; Psicología Básica y Metodología
    Abstract Background/Objective: The Padua Inventory-Revised (PI-R) is a widely applied instrument to measure obsessive-compulsive symptoms in clinical and nonclinical samples. We conducted a reliability generalization meta-analysis on the PI-R. Method: An exhaustive literature search yielded 118 empirical studies that had applied the PI-R, from which 30 studies (33 samples) reported an original reliability estimate. Results: Assuming a random-effects model, the average internal consistency reliability (Cronbach's alpha) was .92 (95% CI [.91, .93]) for the total scores, and ranged from .74 to .89 for the subscales. Assuming mixed-effects models, moderator analyses showed a positive statistically significant association between the standard deviation of the total scores and the reliability coefficients (p = .002; R2 = .38). Conclusions: In terms of reliability, the PI-R scale was found to be adequate for both research and clinical purposes, although exhibiting large heterogeneity across studies. Future empirical studies using the PI-R should be required to provide at least one reliability estimate based on their own data.