Information provided in valuation surveys has been shown to affect stated preferences, which in turn may matter for the validity and reliability of survey-based value estimates. Although information ...effects are widely documented in stated preference studies, the reasons underlying the effects are less established. We focus on information about the policy context of the valuation scenario and examine two pathways which may help explain how including such information in a survey affects stated preferences. We hypothesize and empirically analyze whether the information effects on stated preferences can emerge as a result of changed perceptions about (1) the survey consequentiality and (2) the credibility of the valuation scenario upon facing the additional information. Our results confirm that the frequently found information effects can be present in the context of urban green and climate adaptation. The role of the additional information appears to be negligible for consequentiality perceptions. In contrast, the additional information strengthens the perceived credibility, and this may partially explain the information effects on stated preferences. We conclude that stated preference research may benefit from an increased attention to perceived credibility of the valuation scenario.
Urbane Gemeinschaftsgärten sind aus der Stadt nicht mehr wegzudenken. Aus vereinzelten Pionierprojekten entstand im Laufe der vergangenen zwei Jahrzehnte ein Netzwerk von rund 1000 Initiativen. Als ...erdverbundene Orte haben sie das Potenzial, Stadt wie Gesellschaft grundlegend zu verändern. Doch was ist das Besondere an urbanen Gärten und warum sind sie unverzichtbar? Gemeinsam mit Autor*innen aus Wissenschaft, Forschung und Aktivismus beleuchten wir die unterschiedlichen Dimensionen der neuen urbanen Gartenbewegung - und loten ihre Rolle bei der Mitgestaltung einer menschen- und naturgerechten Stadt der Zukunft aus.
Stated preference studies increasingly elicit respondents' perceptions about survey consequentiality to mitigate hypothetical bias concerns and enhance the validity of value estimates. A typical ...practice is to ask about these perceptions after preference elicitation. We examine the sensitivity of the perceptions, willingness-to-pay (WTP) estimates, and the relationship between them to the perception elicitation location in a discrete choice experiment survey. Our empirical results suggest that the location matters: the perceptions and WTP values are affected. In our data, the self-reported consequentiality is stronger when elicited before, rather than after, the preferences. We discuss implications of the findings for eliciting perceived consequentiality.
For valid preference elicitation, stated preference surveys must provide information on the good to be valued, and respondents must process and recall the information. Previous studies show that the ...amount and type of information can affect stated preferences and the validity of value estimates, but how respondents process this information has been less researched. Some studies find correlations between preferences and respondent engagement with the information, but our study is the first to randomly and exogenously manipulate factors of engagement in a stated preference survey. Drawing on stated preference guidance and psychological concepts, we estimate the effect of quiz questions (asking about the content of the information) and self-reference questions (asking how the information personally relates to the respondent) on (i) engagement, (ii) information recall, and (iii) stated preferences in a discrete choice experiment survey valuing the ecosystem services of urban gardens in the German cities of Berlin and Stuttgart. Our results indicate that respondents spend more time on the information page when confronted with quiz rather than self-reference questions. For both question types, we do not find effects on recall or stated preferences. The results suggest that questions which increase engagement offer no simple fix to enhance information processing. Thus, alternative ways of reinforcing engagement, comprehension, and information recall in stated preference surveys should be developed and applied.
For valid preference elicitation, stated preference surveys must provide information on the good to be valued, and respondents must process and recall the information. Previous studies show that the ...amount and type of information can affect stated preferences and the validity of value estimates, but how respondents process this information has been less researched. Some studies find correlations between preferences and respondent engagement with the information, but our study is the first to randomly and exogenously manipulate factors of engagement in a stated preference survey. Drawing on stated preference guidance and psychological concepts, we estimate the effect of quiz questions (asking about the content of the information) and self -reference questions (asking how the information personally relates to the respondent) on (i) engagement, (ii) information recall, and (iii) stated preferences in a discrete choice experiment survey valuing the ecosystem services of urban gardens in the German cities of Berlin and Stuttgart. Our results indicate that respondents spend more time on the information page when confronted with quiz rather than self-reference questions. For both question types, we do not find effects on recall or stated preferences. The results suggest that questions which increase engagement offer no simple fix to enhance information processing. Thus, alternative ways of reinforcing engagement, comprehension, and information recall in stated preference surveys should be developed and applied.
Stated preference methods such as choice experiments are frequently used for the valuation of environmental goods. Studies suggest that the impact of valuation results on policymaking is rare. How ...the validity of stated preference results is perceived by policymakers may be a neglected barrier to use in policymaking. The study investigates (1) how valuation results are used by policymakers, (2) how policymakers perceive their validity, and (3) how these perceptions matter for the use of the results. We conduct choice experiments on urban green, directly involving local policymakers in the process. The policymakers, who were interviewed later, report frequent informative use of the results. Although concerns regarding validity exist, they are not a major barrier for informative use but maybe for decisive use. Our findings provide new insights on the use of valuation results by policymakers, as our study is the first to focus on stated preference results and on the role of perceived validity and enables an in-depth analysis by interviewing policymakers involved in a transdisciplinary process. We derive recommendations for researchers on how to design and communicate stated preference studies to increase their use in environmental policy-making.
Städtische Grünflächen erbringen vielfältige Leistungen für die Stadtbevölkerung: Sie bieten nicht nur Erholungsmöglichkeiten und verschönern das Stadtbild, sie kühlen auch das Stadtklima an ...Hitzetagen und tragen zum Wohlbefinden der Stadtbewohner(innen)
bei. Das Projekt Stadtgrün wertschätzen hat den Nutzen von Stadtgrün quantifiziert und ökonomisch bewertet, damit dieser bei stadtpolitischen Entscheidungen mehr Beachtung findet.
Städtische Grünflächen erbringen vielfältige Leistungen für die Stadtbevölkerung: Sie bieten nicht nur Erholungsmöglichkeiten und verschönern das Stadtbild, sie kühlen auch das Stadtklima an ...Hitzetagen und tragen zum Wohlbefinden der Stadtbewohner(innen)
bei. Das Projekt
Stadtgrün wertschätzen
hat den Nutzen von Stadtgrün quantifiziert und ökonomisch bewertet, damit dieser bei stadtpolitischen Entscheidungen mehr Beachtung findet.
Städtische Grünflächen erbringen vielfältige Leistungen für die Stadtbevölkerung: Sie bieten nicht nur Erholungsmöglichkeiten und verschönern das Stadtbild, sie kühlen auch das Stadtklima an ...Hitzetagen und tragen zum Wohlbefinden der Stadtbewohner(innen) bei. Das Projekt Stadtgrün wertschätzen hat den Nutzen von Stadtgrün quantifiziert und ökonomisch bewertet, damit dieser bei stadtpolitischen Entscheidungen mehr Beachtung findet.
Städtische Grünflächen erbringen vielfältige Leistungen für die Stadtbevölkerung: Sie bieten nicht nur Erholungsmöglichkeiten und verschönern das Stadtbild, sie kühlen auch das Stadtklima an ...Hitzetagen und tragen zum Wohlbefinden der Stadtbewohner(innen) bei. Das Projekt Stadtgrün wertschätzen hat den Nutzen von Stadtgrün quantifiziert und ökonomisch bewertet, damit dieser bei stadtpolitischen Entscheidungen mehr Beachtung findet. Keywords: biodiversity, climate change, ecosystem services, urban green, willingness to pay
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