Assessment, measurement and functional goals
Rehabilitation assessment starts with the person’s priorities, relevant health history and the activities that are difficult or unsafe. Describe the performance problem before selecting a familiar instrument. Someone who can generate force during an isolated test may still have difficulty cooking because of attention, fatigue, environmental obstacles or lack of support. Conversely, a person may complete an activity successfully through adaptation despite persistent impairment. Both impairment and occupation-level information can be useful.
Choose measures that fit the question, population, setting, language and available time. A screening result flags a concern; it does not automatically establish a diagnosis. A standardized score must be obtained and interpreted according to the instrument’s instructions. A local translation, changed cue or modified environment can affect comparability. Document necessary adaptations rather than presenting the resulting score as fully equivalent to the standardized administration.
Reliability concerns reproducibility, while validity concerns whether an interpretation is justified for the intended use. Interrater agreement matters when different observers score a performance. Test-retest stability matters when repeated results guide progression. Neither property alone guarantees relevance to the person’s actual goals. Minimal detectable change estimates a boundary associated with measurement error under specified conditions; clinically important change concerns meaning, and the two are not interchangeable.
Functional observation should record the task, conditions, assistance, cues, symptoms and outcome. Saying independent without recording repeated verbal prompts can obscure a safety need. A total score may also conceal different item-level patterns. Fall-risk cutoffs and walking-speed categories are useful within their validated framework, but they do not predict an individual’s future with certainty or replace a broader assessment.
Set goals jointly using a meaningful activity, observable performance criterion and realistic review point. Establish a baseline, identify modifiable barriers and agree how progress will be reviewed. A reassessment may show that a task, device or support arrangement needs changing rather than that the person has failed. New dizziness, confusion, severe pain or acute neurological change takes priority over completing a planned test. Written questions support measurement reasoning, not authorization to administer a restricted instrument without training or to override local safety procedures.