Columbia subject headings:
Older people--Mental health--Measurement.
Quality of life--Psychological aspects--Measurement.
Harvard subject headings:
Adjustment (Psychology) in old age--Testing.
Adjustment (Psychology) in old age.
Happiness in old age--Testing.
Happiness in old age.
Well-being--Age factors.
Princeton subject headings:
Older people--Mental health--Measurement.
Quality of life--Psychological aspects--Measurement.