- 21+ aged, general public, USA, 1976
- N = 2264
- Non Response:
- Authors's label
- Our Classification
- 4 item index of questions on frequency
- My mind is as clear as it used to be.
- I find it easy to do the things I
- My life is interesting.
- I feel that I am useful and needed.
- My life is pretty full.
- I feel hopeful about the future.
Rated on a 4 point scale ranging from
"None of the time" to "Most of the time".