The Lawton IADL Scale tracks everyday community skills that often slip first in early dementia, especially handling money, taking medication, and managing household tasks. IADL means Instrumental Activities of Daily Living, the complex routines adults need to live independently. Lawton and Brody published the eight-item scale in The Gerontologist in 1969 to assess community living skills in older adults. It takes about 10-15 minutes by interview, self-report, or proxy, with each domain scored 0 or 1.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- What the eight tasks cover
- Why money and medication matter most
- How to use the score at home
- What the scale cannot prove
What the eight tasks cover
The scale covers telephone use, shopping, food preparation, housekeeping, laundry, transportation, medication responsibility, and finance handling, according to the Hartford Institute's Try This guide. These tasks require planning, memory, and judgment. A missed dose or unpaid bill matters more here than a wrinkled shirt.
Each domain has graded levels of independence. A person may do a task alone, need some help, or depend fully on another person. Totals run 0-8 for women and 0-5 for men under the original scoring.
Why money and medication matter most
The finance item rates independent budgeting, check-writing, bill-paying, and income tracking versus needing help or being incapable of handling money. The medication item rates taking correct doses at correct times independently versus needing pre-prepared doses or being unable to self-medicate. Both demand exact follow-through every day. In the Kurihara Project, very mild dementia impaired shopping, medication, and money items, and amnestic mild cognitive impairment showed similar deficits.
Federal Reserve researchers, merging national credit records with Medicare data, found credit scores weakened and mortgage and credit-card delinquency rose years before eventual memory-disorder diagnosis, as described in the New York Fed staff report. Financial slips can therefore precede a formal diagnosis. The Alzheimer's Association lists trouble following familiar recipes and tracking monthly bills as early signs, distinguishing occasional errors from inability to manage a budget, noted in its 10 early signs list. Families should watch for pattern and persistence. One late payment is noise, while repeated missed doses or unopened bills signal loss of independence.
How to use the score at home
Use the scale as a tracker, not a diagnosis. Ask the same questions the same way every few months. Record who does each task and how much help was needed.
Focus on change from the person's own baseline. A drop from independent to needing reminders for pills or bills deserves prompt medical attention. Concrete notes help clinicians separate normal aging lapses from functional decline.
- Can the person shop, cook, clean, do laundry, and travel alone.
- Can the person use the phone, take medications correctly, and manage money.
- Note dates, missed doses, late bills, and new help from others.
- Bring the dated list to medical visits for review.
What the scale cannot prove
The scale relies on self- or surrogate-report rather than demonstrated task performance. Memory problems, pride, or caregiver stress can distort answers. Direct observation or testing may show a different picture.
Its original gender-based scoring also omitted cooking, housekeeping, and laundry for men. Score totals should not decide competence, benefits, or living arrangements alone. Treat a low score as a reason to check safety, supports, and causes.
