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Travel cost demand model based river recreation benefit estimates with on‐site and household surveys: Comparative results and a correction procedure—Reevaluation
Author(s) -
MartínezEspiñeira Roberto,
AmoakoTuffour Joe,
Hilbe Joseph M.
Publication year - 2006
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/2005wr004798
Subject(s) - recreation , truncation (statistics) , stratification (seeds) , econometrics , statistics , sample (material) , survey data collection , environmental science , mathematics , hydrology (agriculture) , economics , geology , ecology , botany , germination , chemistry , geotechnical engineering , chromatography , dormancy , biology , seed dormancy
Loomis (2003) reported to have measured the effect of endogenous stratification on benefit estimates resulting from using on‐site data. He compared corrected and uncorrected benefit estimates of water‐based recreation using on‐site sample data and estimates based on data from a household survey. We clarify his analysis and show that his comparison was actually between uncorrected estimates and estimates that corrected for both endogenous stratification and zero truncation. Our reanalysis of Loomis's (2003) on‐site sample data confirms that zero truncation accounts for most of the on‐site sample bias. The properly isolated effect of correcting for endogenous stratification only is much less substantial than reported by Loomis.