Sadock & Sadock (2003) state that depression among elderly may reach up to 15 percent and among these suffering from dementia from 25- 50 percent. Israeli studies show similar rates of depressive symptomatology as performed in other Western countries. A prevalence of 21.5 percent of depressive symptomatology was found among a random sample of 937 Israeli adults. (Iancu et al., 2003).