In the era of managed care, psychiatric inpatient hospitalizations have become increasingly shorter, with treatment emphasis placed on medication management and group therapy (Shapiro, Barkham, Stiles, Hardy, Rees, Reynolds et al., 2003). Many hospitals no longer provide individual therapy due to the time commitment and cost involved in providing individualized service to patients. This study seeks to understand whether even very brief interventions can produce significant improvements in the quality of care, treatment outcome, and treatment satisfaction among psychiatric inpatients while minimizing the burden of time and expense. Specifically, Collaborative Assessment (CA; Finn & Tonsager, 1992; Finn, 2007a; Fischer, 2000) was proposed as an alternative to more traditional Supportive- Psychotherapy or to "group treatment only" modalities. Two types of ultra-brief (two session) individualized interventions were investigated and compared to no individualized intervention. Patients were randomly assigned to a Collaborative Assessment condition (CA), Supportive Psychotherapy condition (SP; Blais, Jacobo, & Smith, 2001) or Treatment as Usual (TU). Dependent variables included therapeutic alliance, treatment outcome as measured by change in level of pathological symptomotology, patient satisfaction with treatment, and feelings of well-being. Patient and therapists subjective evaluations of the therapy and assessment experience were explored. Patient characteristics that could present as barriers to effective participation in individualized interventions (i.e. level of stressors, psychiatric severity, potential for treatment rejection and Full Scale IQ) were also investigated. Results indicated that participation in two sessions of Collaborative Assessment was associated with higher levels of working alliance with the treatment unit, feelings of well-being, treatment satisfaction, and lowered distress related to psychiatric symptoms as compared to treatment as usual. Implications for clinical practice and future research are discussed.