| 21. |
- Carlsson, Fredrik, 1968, et al.
(författare)
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The first time is the hardest: A test of ordering effects in choice experiments
- 2010
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This paper addresses the issue of ordering effects in choice experiments, and in particular how learning processes potentially affect respondents’ stated preferences in a sequence of choice sets. In a case study concerning food quality attributes of chicken breast filets, we find evidence of ordering effects in a sequence of 16 choice sets, where the last 8 choice sets are identical to the first 8. The overall preference structure is found to differ significantly between the two identical sequences of choice sets, and significant increases in marginal WTP are found for two out of four attributes. We find a reduction in the error variance for the last 8 choice sets relative to the first 8 choice sets. In particular, this difference is ascribed to the first choice set obtaining a significantly higher error variance than all succeeding choice sets, suggesting institutional learning rather than preference learning effects underlying the observed ordering effect. This is further supported by the fact that the differences in WTP become insignificant when removing the first choice set from the analysis. We find no evidence of fatigue, and we argue that our findings cannot be explained by starting point or strategic behavior effects.
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| 22. |
- Carlsson, Fredrik, 1968, et al.
(författare)
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The Truth, the Whole Truth, and Nothing but the Truth - A Multiple Country Test of an Oath Script
- 2010
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Hypothetical bias is one of the main issues bedeviling the field of nonmarket valuation. The general criticism is that survey responses reflect how people would like to behave, rather than how they actually behave. In our study of climate change and emissions reductions, we took advantage of the increasing bulk of evidence from psychology and economics that addresses the effects of making promises, in order to investigate the effect of an oath script in a contingent valuation survey. The survey was conducted in Sweden and China, and its results indicate that an oath script has significant effects on respondent behavior in answering willingness-to-pay (WTP) questions, some of which vary by country. In both countries, the share of zero WTP responses and extremely high WTP responses decreases when an oath script is used, which also results in lower variance. In China, the oath script also reduces the average WTP, cutting it by half in certain instances. We also found that the oath script has different impacts on various respondent groups. For example, without the oath script, Communist party members in China are more likely than others to have a positive WTP for emissions reductions, but with the oath script, there is no longer any difference between the groups.
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| 23. |
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| 24. |
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| 25. |
- Carlsson, Fredrik, 1968, et al.
(författare)
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Windfall vs. Earned Money in the Laboratory: Do They Affect the Behavior of Men and Women Differently?
- 2010
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- We experimentally investigate, using a dictator game, if the effects of windfall and earned endowments on behavior differ between men and women genders. In line with previous studies, we find that windfall endowments significantly increase the amount donated. The impact of moving from earned to windfall endowment on behavior is larger for females, yet the gender difference is statistically insignificant. Thus, we do not find evidence that the change in how the endowment is obtained in a laboratory experiment affects male and female behavior differently.
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| 26. |
- Ibanez, Marcela, 1973, et al.
(författare)
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A choice experiment on coca cropping
- 2010
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Ingår i: Journal of Development Economics. ; 93, s. 249-263
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Tidskriftsartikel (refereegranskat)
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| 27. |
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| 28. |
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