Affiliations: Board of Governors of the Federal Reserve System (Ret.), Washington, DC 20551, USA. E-mail: [email protected]
Abstract: The Survey of Consumer Finances (SCF) collects dollar amounts for a wide
variety of assets, liabilities, payments, incomes, and other items.
Non-negligible problems with item nonresponse for these variables in the
past has been mitigated by the collection of range information. However,
reports from interviewers suggested that probing for ranges was sometimes
awkward. The redesign of the 1995 SCF for computer-assisted personal
interviewing (CAPI) allowed the collection of range data to be incorporated
more formally into the interview process than was feasible with a paper
questionnaire and to capture more detailed information about the nature of
probing. The results from the use of the new approach suggest that many
responses that would previously have been recorded as ``don't know'' were
instead collected as range information, and that ranges may have displaced
some point estimates made by the respondent. In addition, the data suggest
there are complex interactions effects that determine the types of ranges
that interviewers and respondents negotiate. One justification for imposing
this additional burden on interviewers and respondents is the potential for
addressing nonignorable item nonresponse more fully. Although the results
presented here tend to support the collection of range data as an
efficiency-improving measure, there is not strong evidence that imputations
would otherwise be biased.