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A specific instrument has been developed to diagnose personality disorders in older adults. However, further research is necessary to improve the diagnostic accuracy of the Gerontological Personality disorders Scale (GPS).

As suggested by the results, it can be concluded that high-quality caring relationships contribute to the need fulfillment of residents and their well-being. The quality of caring relationships is thus an important topic for further research. The field may especially benefit from longitudinal studies and studies that use observations of the caring relationship in addition to self-reports.

Electrographic signs of improved cerebral function and improved cognitive function were found after Cbl supplementation in older subjects with low plasma Cbl concentrations who were free of significant cognitive impairment. These improvements were related to a reduction of plasma tHcy concentration.