Brief Adjustment Scale - 6 for Measurement-Based Care: Further Evaluation of Psychometric Properties, Ethnic Samples, and Clinical Utility

The Brief Adjustment Scale-6 (BASE-6) was recently developed and initially examined as a brief, reliable, no-cost survey for measuring general psychological functioning within Measurement-Based Care (MBC). This study aims to further evaluate the psychometric properties of the BASE-6 in both clinical and nonclinical populations. More specifically, psychometric properties including reliability and validity, generalizability for different race/ethnic samples, and clinical utility within the context of MBC were examined. Three adult samples participated in this study: online community participants (Sample 1: n = 394), college students (Sample 2: n = 249), and individuals receiving outpatient clinical services (Sample 3: n = 80). Participants within the clinical sample regularly completed the BASE-6 while receiving evidence-based treatment in a community based psychological training clinic, where the practice of MBC is standard. Results showed that the BASE-6 had a high level of internal consistency and good test-retest reliability. It showed high convergent validity through a significant positive correlation with total and subscale scores of the Depression Anxiety Stress Scale-21 (DASS-21). Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) results supported a unidimensional model that strongly fit the data. All results were uniform across samples. When comparing the clinical and nonclinical samples, participants from the clinical sample demonstrated higher scores in total and most of the single items of the BASE-6. Finally, within the clinical sample, the BASE-6 was sensitive enough to capture change over time by demonstrating a large effect size of pre-post treatment changes and significant linear change in multilevel growth modeling. These results support the BASE-6 as a reliable and valid measure that has a one-factor structure, regardless of race/ethnicity and participants’ clinical status. Additionally, it can sensitively detect clinical change in individuals over the course of the treatment. Thus, the BASE-6 appears to accurately monitor overall psychological adjustment.

Name thesis:degree_name

M.S.

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Clinical Science

Department dc:contributor.department

Psychology

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

2021

Author dc:creator

• Ko, Hayoung

Chair dc:contributor.committeechair

• Cooper, Lee D.

Committee members dc:contributor.committeemember

• Stanton, Kasey
• McDonnell, Christina

• Measurement Based Care
• Clinical Utility
• Validation
• Psychological Adjustment
• Outcome Monitoring

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en_US

Handle dc:identifier.uri

http://hdl.handle.net/10919/105201

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/105201