RT Journal Article
SR Electronic
T1 Unit Non-Response Bias in the Interval Data Model
JF Land Economics
JO Land Econ
FD University of Wisconsin Press
SP 448
OP 462
DO 10.2307/3654731
VO 80
IS 3
A1 Harpman, David A.
A1 Welsh, Michael P.
A1 Sparling, Edward W.
YR 2004
UL http://le.uwpress.org/content/80/3/448.abstract
AB A mail survey was administered to a panel of Colorado consumers to obtain estimates of willingness to pay (WTP) for preserving Union Park. Detailed socioeconomic data for all surveyed individuals was available a priori. We develop and employ the multiple-bounded probit with selection (MBPS) model, to correct for non-response and self-selection bias. Statistical tests indicate estimates of WTP corrected for these biases are significantly higher than uncorrected estimates. The use of selection models requires an additional investment by researchers. These investments may be warranted for policy relevant studies. (JEL Q26)