PT  - JOURNAL ARTICLE
AU  - Bouma, J. A.
AU  - Koetse, M. J.
TI  - Mind the Gap: Stated versus Revealed Donations and the Differential Role of Behavioral Factors
AID  - 10.3368/le.95.2.225
DP  - 2019 May 01
TA  - Land Economics
PG  - 225--245
VI  - 95
IP  - 2
4099  - http://le.uwpress.org/content/95/2/225.short
4100  - http://le.uwpress.org/content/95/2/225.full
SO  - Land Econ2019 May 01; 95
AB  - This paper uses a contingent valuation study and an actual donation request to assess the impact of behavioral factors on hypothetical bias in stated willingness-to-pay estimates. Our findings indicate that both the number of respondents willing to donate and the amount they are willing to donate differ substantially between treatments. Behavioral factors play a substantial and significant role; in particular, the extent of warm glow derived from giving and expectations about other people’s behavior increase the extent of hypothetical bias in stated willingness-to-pay estimates. We suggest ways in which this may be incorporated in future contingent valuation study design. (JEL Q51)