Validated questionnaires such as the NPI-Q, Geriatric Depression Scale, Cornell Scale and MBI Checklist help track mood changes in early Alzheimer's, along with smartwatch ratings and phone or watch monitoring apps. They record depression, anxiety, apathy, agitation, sleep and appetite shifts over days to weeks.
Mood changes here mean new emotional and behavior shifts tied to brain change, not ordinary bad days. Families often notice them first. A dated written record helps a clinician see pattern, severity and impact.
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
- Which short questionnaires can families start with?
- When does a clinician-led rating help?
- How to track slow personality change before dementia?
- What can watches and apps add between visits?
Which short questionnaires can families start with?
The Neuropsychiatric Inventory-Questionnaire is a brief caregiver report. The Journal of Prevention of Alzheimer's Disease describes it as covering 12 domains including depression, anxiety, apathy, agitation and sleep or appetite changes, with severity and caregiver-distress ratings in about 5 minutes the clinical trial endpoints review. The 15-item Geriatric Depression Scale asks the older adult directly.
Stanford's Yesavage lab presents it as yes or no questions about satisfaction, boredom, helplessness, hopelessness and energy over the past week, completed in about 5 to 10 minutes Stanford's GDS instructions. Use them for different jobs. NPI-Q gives a broad sweep plus caregiver strain. GDS gives the person's own view of low mood.
- Pick NPI-Q when a caregiver sees several behavior shifts.
- Pick GDS when low mood, withdrawal or loss of interest stands out.
- Repeat the same form on the same schedule for comparison.
When does a clinician-led rating help?
The 19-item Cornell Scale for Depression in Dementia is clinician-administered. It combines separate interviews with the patient and a caregiver or informant across mood, behavioral, physical, cyclic and ideational signs, according to Aging and Mental Health the Cornell Scale validation report. That two-source design matters when memory loss affects self-report. The clinician can weigh observed signs against caregiver notes.
Families can help by bringing sleep, appetite, tearfulness and agitation examples with dates. Ask about it when low mood persists, worsens or overlaps medical issues. Bring medication, illness and pain notes too. Those details help separate depression from delirium, pain or drug effects.
How to track slow personality change before dementia?
The 34-item Mild Behavioral Impairment Checklist focuses on late-onset, persistent pre-dementia changes. The Journal of Alzheimer's Disease describes ratings by patient, informant or clinician across apathy, mood or anxiety, impulse control, social appropriateness and psychotic-like symptoms the MBI-C validation study. It suits gradual shifts. Examples include new apathy, worry, impulsivity, rudeness or suspicion lasting months.
Scoring the same checklist every few months shows whether change persists or spreads. Note onset age and prior personality. Late onset and persistence raise concern. Share prior mental-health history so new change is not confused with lifelong traits.
What can watches and apps add between visits?
Frequent self-ratings can fill gaps between clinic tests. In a study of 162 adults averaging about age 72, smartwatch prompts asked participants to rate mental sharpness plus mood, stress, fatigue and depression, ICT and health reported, supporting frequent self-reports as an early-detection aid. Passive data adds behavior context.
A meta-analysis of wearable data in Frontiers in Medicine found adults with dementia were less active with fragmented sleep-wake cycles and lost daily rhythm versus controls, but results varied by device, duration and setting, limiting direct comparison. One feasibility approach pairs both streams. A National Institute on Aging-listed study tests the HealthMode Agitation phone and watch app that passively collects activity and heart-rate data while caregivers log agitation events, giving clinicians dated triggers and patterns at visits.
- Keep the watch charged and worn consistently.
- Log mood, sleep, agitation and possible triggers the same day.
- Bring dated charts and event notes to visits.
