Browsing by Author "Lagerkvist, Carl-Johan"

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Consumer benefits of labels and bans on genetically modified food - An empirical analysis using Choice Experiments
(2004) Lagerkvist, Carl-Johan; Frykblom, Peter; Carlsson, Fredrik; Department of Economics
Applying an experiment on the choice of consumer goods, we show that Swedish consumers do not regard genetically modified (GM) food as being equivalent to conventional food. A central argument by proponents of GM is that the end products are identical to those where GM has not been used. That respondents in our survey disagree with this argument is supported by two observations. First, a positive significant WTP is found for a mandatory labeling policy. This result confirms previous observations that GM food can be a credence good causing a market failure. Second, consumers are also willing to pay a significantly higher product price to ensure a total ban on the use of GM in animal fodder. Even if scientists and politicians argue that most of today’s GM food is indistinguishable from GM-free food, consumers disagree.
Preferences With and Without Prices - does the price attribute affect behavior in stated preference surveys?
(2004) Lagerkvist, Carl-Johan; Frykblom, Peter; Carlsson, Fredrik; Department of Economics
The experimental as well as the nonmarket valuation literature include several examples of how an introduced price can affect behavior in otherwise not expected ways. It has become standard to include a price vector as an attribute in choice experiments, something that enables us to estimate a marginal willingness to pay for other attributes. We test the impact on preferences by an inclusion of a price in a choice experiment. Preferences are affected, as might be expected. However, also the relative ranking of individual attributes is affected. We end on a positive note, observing that a price seems to drive out zero price opinions, e.g. warm glow values.
Using Cheap-Talk as a Test of Validity in Choice Experiments
(2004) Lagerkvist, Carl-Johan; Frykblom, Peter; Carlsson, Fredrik; Department of Economics
In two experiments on the choice of consumer goods, the estimated marginal willingness to pay for food are found to be lower in the survey version with cheap talk. Our test can be seen as a test of hypothetical bias. This implies we cannot reject the hypothesis of a hypothetical bias for marginal WTP in choice experiments.
Which type of policy instrument do citizens and experts prefer? A choice experiment on Swedish marine and water policy
(University of Gothenburg, 2018-11) Ek, Claes; Elofsson, Katarina; Lagerkvist, Carl-Johan; Dept. of Economics, University of Gothenburg
In the choice between alternative environmental policy instruments, economists tend to favor policies capable of attaining cost-efficiency, but other considerations may be important to stakeholders. We perform a choice experiment modeled on Swedish water and marine policy to estimate preferences for different types of environmental policy instruments among citizens and municipal experts. To approximate preferences for each instrument per se, choice sets include several attributes that respondents may otherwise view as correlated with instrument type, such as how costs are shared between taxpayers and farmers. In our mixed-logit regressions, both the modal citizen and the modal expert prefer direct regulation and subsidies to nutrient trading. Experts weight taxpayer costs less heavily, implying larger WTP estimates; in particular, nutrient trading is unlikely to deliver sufficiently large cost savings for experts to prefer it to other instrument types. This potentially explains the low takeup of water quality trading outside the US.