Psychometric Assessment of Two New Self-Rating Depression Scales: The Correa-Barrick Depression Scale

Abstract

Depression is a prevalent condition that is responsive to treatment. Efforts to screen and educate the public on depression are beneficial. The purpose of this investigation was to assess the psychometric properties of two new self-rating depression scales, the Schiraldi Depression Check-up (DC) and the Correa-Barrick Depression Scale (CBDS), based upon classical test theory and comparisons to published scales: the Beck Depression Inventory (BDI) and the Inventory for Depressive Symptomatology, Self-Report (IDS-SR). The study was conducted on a total of 387 participants. There were two convenience samples used. Sample I was composed of 337 faculty and staff from a metropolitan comprehensive university. A subset of Sample I was composed of 203 faculty and staff. Sample II included 50 outpatients diagnosed with depression under the treatment of a board certified psychiatrist. Correlation coefficients for the DC and CBDS with the BDI were r = . 75 and r = . 71, respectively. Cronbach alpha coefficients for the DC and CBDS in the patient sample were r = .95 and r = .96, respectively. Correlation coefficients for the IDS-SR with the DC and the CBDS in the patient sample were r = .85 and r = .81, respectively. Two-week test-retest correlation coefficients in the university sample for the DC and CBDS were r = .81 and r = . 70, respectively. Factor analysis for the DC revealed a threefactor structure: "Cognitive-Emotional Disturbance," " Psychophysiological Symptoms," and "Physiological Symptoms." Factor analyses for the CBDS revealed a four-factor structure: "Cognitive-Emotional Disturbance," "General Outlook," "Physiological Symptoms," and "Sensory/Perceptual Disturbance." Discriminant analysis did not support the Depression Check-up or the Correa-Barrick Depression Scale in discriminating between the university and patient samples. There were several conclusions from this study. Findings provided preliminary evidence for the validity and reliability of the Depression Check-up and the Correa-Barrick Depression Scale in measuring depression in an adult population. The findings that sensory-perceptual disturbance may be an additional variable in depression and that a single-factor structure emerged for "emotional-cognitive disturbance" was discussed as well as implications for health education theory, practice, and research.