The symptoms and functioning severity scale (SFSS): psychometric evaluation and discrepancies among youth, caregiver, and clinician ratings over time.

This paper describes the development and psychometric evaluation of the symptoms and functioning severity scale (SFSS), which includes three parallel forms to systematically capture clinician, youth, and caregiver perspectives of youth symptoms on a frequent basis. While there is widespread consensus that different raters of youth psychopathology vary significantly in their assessment, this is the first paper that specifically investigated the discrepancies among clinician, youth, and caregiver ratings throughout the treatment process within a community mental health setting. Results for all three respondent versions indicated the SFSS is a psychometrically sound instrument for use in this population. Significant discrepancies in scores existed at baseline among the three respondents. Longitudinal analyses reveal the youth-clinician and caregiver-clinician score discrepancies decreased significantly over time. Differences by youth gender existed for caregiver-clinician discrepancies. The average youth-caregiver score discrepancy remained consistent throughout treatment. Implications for future research and clinical practice are discussed.