This thesis examined predictors of mood disturbance by use of the Profile of Mood States (POMS) in older and younger subjects using a multiple regression procedure. Major variables used were home security, community security, health, marital status, age, income, perceived mobility, desire for increased mobility, and total excursion destinations. Variables entering in the equation for each group differed significantly. For the older group, home security and income were significant variables. For the younger group only desire for increased mobility predicted mood disturbance. The expected relationship with mobility was not significant for older individuals. These results indicate a need to re-evaluate the determinants of mood disturbance in the young and old and a need to review the emphasis on mobility for the old by younger policymakers.