Objective outcome measures span performance-based and interview-based assessments. They can focus on cognition, the ability to perform everyday living skills, or on real-world functional outcomes. These measures vary in their comprehensiveness and in their practicality, with some being quite extensive and others intentionally abbreviated. Performance-based assessments have several advantages to self-report and informant-report measures when cognition and functioning is concerned, it is important to recognize that they do not capture subjective elements of functioning such as quality of life. Depending on the population, the treatment intervention, and the goals of the research program, it is possible to select outcome measures well matched to the research design and practical for purposes of the study New advances in technology are leading to rapid changes in the measurement of functional outcomes, and computerized assessment will be the rule for many studies in the immediate future.

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