Change in neurocognition by housing type and substance abuse among formerly homeless seriously mentally ill persons.

OBJECTIVE: To test the effect of living in group housing rather than independent apartments on executive functioning, verbal memory and sustained attention among formerly homeless persons with serious mental illness and to determine whether substance abuse modifies this effect. METHOD: In metropolitan Boston, 112 persons in Department of Mental Health shelters were randomly assigned to group homes ("Evolving Consumer Households", with project facilitator, group meetings, resident decision-making) or independent apartments. All were case managed. A neuropsychological test battery was administered at baseline, at 18 months (Time 2), with an 81% follow-up rate, and at 48 months (Time 3), with a 59% follow-up rate. Hierarchical Linear Modeling was applied to executive functioning--assessed with the Wisconsin Card Sorting Test (Perseverations)-Logical Memory story recall, and an auditory Continuous Performance Test (CPT) for sustained attention. Subject characteristics were controlled. RESULTS: When moved to group homes, subjects without a lifetime substance abuse history improved on Perseverations, while those who moved to independent apartments deteriorated on Perseverations. Across the two housing conditions, subjects showed no change in Perseverations, but improved on Logical Memory story recall and the CPT. CONCLUSIONS: Type of housing placement can influence cognitive functioning; notably, socially isolating housing is associated with weakened executive functioning. Substance abuse significantly diminishes environmental effects. These are important factors to consider in housing placement and subsequent treatment.

The effect of housing interventions on neuropsychological functioning among homeless persons with mental illness.

The authors tested the hypotheses that neuropsychological functioning would improve after homeless persons with severe and persistent mental illness were provided with housing and that executive functioning would improve more among those placed in group homes than among those placed in independent apartments. A total of 114 persons with serious and persistent mental illness who were stable residents of homeless shelters completed neuropsychological testing and were randomly assigned to group homes or independent apartments; 91 participants (52 assigned to group homes and 39 assigned to independent apartments) were retested after 18 months. Overall neuropsychological functioning improved significantly across the full study sample. Executive performance, measured by the Wisconsin Card Sorting Test, decreased significantly among persons assigned to independent apartments and increased, but not significantly, among those assigned to group homes. The findings suggest that providing housing for persons who have severe and persistent mental illness improves cognitive functioning but that independent living may diminish executive functioning.

New constructs and assessments for relapse and continued use potential in the ASAM Patient Placement Criteria.

One area of intensive study in recent years in addiction research is the characterization and prediction of relapse risk. Given the growing list of findings and assessment tools in this area, in preparation for the second edition, revised volume of the Patient Placement Criteria (PPC) of the American Society of Addiction Medicine (ASAM), a workgroup of the Coalition for National Criteria was assigned the task of creating a revised conceptual organization for Dimension 5: Relapse/Continued Use Potential. The workgroup conducted a review of the previous Dimension 5 constructs and criteria, including a decision analysis of the previous Dimension 5 decision rules. Following that analysis, field data from the ASAM Criteria Validity Study at Massachusetts General Hospital and Harvard Medical School were analyzed from a large cohort of public and indigent patients in eastern Massachusetts. After determining the concurrent validity of the Dimension 5 decision rules and their limitations, the decision rules were rewritten to gain improved validity. This exercise revealed techniques that can and should be used to improve the discrimination of levels of care among all Dimensions. Finally, the workgroup expanded and refined the constructs that should comprise a revised Dimension 5. This revised list of constructs is sequential and hierarchical. It offers face validity on several levels of current basic and clinical research knowledge: behavioral pharmacology, behavioral psychology, learning theory and psychopathology. While the Second Edition-Revised volume of the ASAM PPC (PPC-2R) does not go so far as to propose final decision rules for Dimension 5 based on these new constructs, it does recommend pilot adoption of several new assessment tools for this dimension and provides the framework incorporating those constructs and assessments in the next complete PPC edition.