RT Journal Article SR Electronic T1 Using Auxiliary Population Samples for Sample-Selection Correction in Models Based on Crowd-Sourced Volunteered Geographic Information JF Land Economics JO Land Econ FD University of Wisconsin Press SP 1 OP 21 DO 10.3368/le.98.1.040720-0050R1 VO 98 IS 1 A1 Cameron, Trudy Ann A1 Kolstoe, Sonja H. YR 2022 UL http://le.uwpress.org/content/98/1/1.abstract AB Data from citizen science (CS) projects (and some social media) can offer selected samples with extensive information about human interactions with the natural world. Independently, we elicit levels of engagement with the eBird project from members of the eBird CS project and from a general-population sample. The general-population sample allows an ordered-probit model to explain propensities to engage with eBird at different levels, which we transfer to predict selection-correction terms for our independent sample of eBird members. We illustrate our method with a question posed only to our eBird-member survey sample about the radii of their individual spatial consideration sets for typical one-day birding excursions.