Dumagan, Jesus C.; Mount, Timothy D. - 1997
The U.S. CPI is based on the Laspeyres price index, an index type that has an upward "substitution bias." Thus, the CPI … Price Index recommended adopting for the CPI a "superlative" price index, e.g., the Fisher or Tornqvist indices. Under the …" cost-of-living index (COLI)--than the Laspeyres index, but this assumption implies that: all income elasticities equal 1 …