Glossary

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Late Diagnosis(also: Adult Diagnosis, Delayed Diagnosis)

Receiving a formal diagnosis of a condition significantly later than when symptoms first appeared, often in adulthood for conditions typically identified in childhood. Late diagnosis of ADHD and autism is common, particularly among women, people of color, and those who developed…

Loneliness(also: Perceived Social Isolation)

The subjective feeling of being alone or disconnected from others, regardless of the actual quantity of social contacts a person has. Loneliness differs from social isolation in that it reflects perceived rather than objective social disconnection—a person can feel lonely in a…

Low vision(also: Partial sight, Visual impairment)

A level of visual impairment that cannot be fully corrected with standard glasses, contact lenses, medication, or surgery, but retains some usable vision — distinguishing it from total blindness. Low vision encompasses a range of conditions affecting acuity, visual field,…

Lubben Social Network Scale(also: LSNS, LSNS-6)

A validated screening instrument used to assess social isolation risk in older adults by measuring the size and closeness of their social networks. The abbreviated LSNS-6 version contains six items covering family and friend networks, asking about the number of relatives and…

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