Refinement of the Iowa Self-Assessment Inventory.

Two samples of older respondents (N = 1,153 and N = 420) were used in the refinement of the Iowa Self-Assessment Inventory (ISAI). Factor analyses based on data obtained from these samples resulted in modification of the original six-scale inventory to an inventory of seven scales: economic resources, anxiety/depression, physical health, alienation, mobility, cognitive status, and social support. The original ISAI was shortened from 120 to 56 items.