Title: FAQ on Social Security COLAs: AARP shares what, when, how, why
Article Snip: "...COLAs currently understate the cost of living for the elderly, because they are based on increases in the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W), which only measures the spending of families who make most of their income from wage earners or clerical workers. It excludes families whose main sources of income are pensions and Social Security..."
Reference: www.usatoday.com