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An Improved Method for Calibrating Purchase Intentions in Stated Preference Demand Models

Davies, Stephen P.; Loomis, John B. - In: Journal of Agricultural and Applied Economics 42 (2010) 04

The Orbit demand model allows the magnitude of the calibration to stated purchase intentions to vary based on the magnitude of the stated quantities. Using an empirical example of stated trips, we find that the extent of calibration varies substantially with less correction needed at small...

Persistent link: https://www.econbiz.de/10008853634

A Comparison of Actual and Hypothetical Willingness to Pay of Parents and Non-Parents for Protecting Infant Health: The Case of Nitrates in Drinking Water

Loomis, John B.; Bell, Paul; Cooney, Helen; Asmus, Cheryl - In: Journal of Agricultural and Applied Economics 41 (2009) 03

We estimate adultsâ€™ willingness to pay (WTP) to reduce health risks to their own or other familiesâ€™ infants to test … health. Statistical tests confirm a high degree of altruism in our WTP results, and altruism held even when real money was …

Persistent link: https://www.econbiz.de/10008474542

Verbiage Matters: Do Respondents Answer Willingness to Pay Dichotomous Choice Questions on a Per Person or Per Group Basis?

Lohman, Greta; Keske, Catherine M.; Loomis, John B. - Agricultural and Applied Economics Association - AAEA - 2010

Dichotomous choice willingness to pay questions are often used to determine the value visitors place on nature-based recreation. Ambiguity in wording can result in the use of information that does not necessarily reflect visitors’ true WTP. For example, depending on the specificity of the...

Persistent link: https://www.econbiz.de/10009020433

Dealing with Preference Uncertainty: A Mixture Model Approach

Loureiro, Maria L.; Loomis, John B. - Agricultural and Applied Economics Association - AAEA - 2007

In the current paper, we compare alternative approaches to incorporating uncertainty into the statistical analysis of dichotomous choice responses. In doing so, first we employ previous modelling techniques that included uncertainty of preferences, and secondly we compare the obtained results...

Persistent link: https://www.econbiz.de/10005327192

COMPARISON OF ENVIRONMENTAL QUALITY-INDUCED DEMAND SHIFTS USING TIME-SERIES AND CROSS-SECTION DATA

Loomis, John B.; Cooper, Joseph C. - In: Western Journal of Agricultural Economics 15 (1990) 01

Almost all applications of the Travel-Cost-Method demand function which include site quality variable(s) are multisite models. The results of this study serve as a note of warning that using the demand equation derived from multisite cross-sectional data to perform a benefit-cost analysis of...

Persistent link: https://www.econbiz.de/10005804210

A Two-Constraint AIDS Model of Recreation Demand and the Value of Leisure Time

Larson, Douglas M.; Shaikh, Sabina L.; Loomis, John B. - Western Agricultural Economics Association - WAEA - 1997

Persistent link: https://www.econbiz.de/10005804764

A Joint Estimation Method to Combine Dichotomous Choice CVM Models with Count Data TCM Models Corrected for Truncation and Endogenous Stratification

Gonzalez, Juan Marcos; Loomis, John B.; Gonzalez-Caban, … - In: Journal of Agricultural and Applied Economics 40 (2008) 02

We update the joint estimation of revealed and stated preference data of previously published research to allow for joint estimation of the Travel Cost Method (TCM) portion using count data models. The TCM estimation also corrects for truncation and endogenous stratification as well as...

Persistent link: https://www.econbiz.de/10005513877

A Spatial Probit Modeling Approach to Account for Spatial Spillover Effects in Dicotomous Choice Contingent Valuation Surveys

Loomis, John B.; Mueller, Julie M. - In: Journal of Agricultural and Applied Economics 45 (2013) 01

We present a demonstration of a Bayesian spatial probit model for a dichotomous choice contingent valuation method willingness-to-pay (WTP) questions. If voting behavior is spatially correlated, spatial interdependence exists within the data, and standard probit models will result in biased and...

Persistent link: https://www.econbiz.de/10010914301

Using Random Parameters to Account for Heterogeneous Preferences in Contingent Valuation of Public Open Space

Nahuelhual, Laura; Loureiro, Maria L.; Loomis, John B. - In: Journal of Agricultural and Resource Economics 29 (2004) 03

To test for preference heterogeneity in dichotomous choice contingent valuation responses, a random parameter logit (RPL) specification is used in this analysis. The RPL model confirms heterogeneity in respondents' preferences for protection of public open space, as reflected in statistically...

Persistent link: https://www.econbiz.de/10005805335

A Comparison of Actual and Hypothetical Willingness to Pay of Parents and Non-Parents for Protecting Infants' Health: The Case of Nitrates in Drinking Water

Loomis, John B.; Asmus, Cheryl; Bell, Paul - Agricultural and Applied Economics Association - AAEA - 2007

The objective of this research was to estimate adults' willingness to pay to reduce health risks to their or other … for infants to reduce infants' exposure to nitrates in drinking water. Since nitrates only affect infants' health, we have … isolated the adults' willingness to pay just for infants' health by buying bottled water to avoid infants' nitrate intake …

Persistent link: https://www.econbiz.de/10005038935