- Ivancic, M.T.; Barrett, G.T.; Kimberley, A.; Simonow, A.
- A Replication to Increase Happiness Indices Among Some People With Profound Multiple Disabilities.
- Research in Developmental Disabilities, 1997, Vol. 18, 79 - 89
- 0891 2229
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.