Juster, F. Thomas; Lupton, Joseph; Cao, Honggao - 2008
accurate information from survey respondents about income and wealth. However, changing survey questions - even for the better … - can create problems. For example, if we ask a respondent about his wealth holdings in 1992 and ask him again in 1994 but … use a different and improved set of questions, we cannot be sure that changes in his wealth are real because part of the …