@techreport{ReimersJacksohnAppenfelleretal.2021, author = {Reimers, Hanna and Jacksohn, Anke and Appenfeller, Dennis and Lasarov, Wassili and H{\"u}ttel, Alexandra and Rehdanz, Katrin and Balderjahn, Ingo and Hoffmann, Stefan}, title = {Maßnahmen zur Eind{\"a}mmung von Rebound-Effekten auf Konsument:innen- und Haushaltsebene}, series = {iReliefs - Indirect Rebound Effects}, journal = {iReliefs - Indirect Rebound Effects}, publisher = {Christian-Albrechts-Universit{\"a}t zu Kiel}, address = {Kiel}, pages = {24}, year = {2021}, abstract = {Rebound-Effekte, die infolge von Maßnahmen und Handlungen auftreten, die darauf abzielen, den Ressourcenverbrauch und die damit verbundenen Emissionen zu reduzieren, stehen dem Ziel nach Klimaneutralit{\"a}t entgegen. Bei der Entwicklung und dem Einsatz von Maßnahmen zum Ressourcen- und Klimaschutz sollte immer das Auftreten von Rebound-Effekten ber{\"u}cksichtigt und durch geeignete Konzepte zur Abschw{\"a}chung dieser Effekte erg{\"a}nzt werden. Die wissenschaftliche Forschung hat sich bisher {\"u}berwiegend auf die Analyse von Rebound-Effekten und weniger auf die Eind{\"a}mmung dieser Effekte fokussiert. Der vorgelegte Maßnahmenkatalog zur Eind{\"a}mmung von Rebound-Effekten, der im Rahmen des vom Bundesministerium f{\"u}r Bildung und Forschung (BMBF) gef{\"o}rderten Verbundprojektes „iReliefs. Indirect Rebound Effects. Lifestyle-segmentation and Interventions with Efficiency-Feedback and Sufficiency" (FZK 01UT1706) entwickelt wurde, soll genau diese Wissensl{\"u}cke schließen.}, language = {de} } @article{ReimersJacksohnAppenfelleretal.2021, author = {Reimers, Hanna and Jacksohn, Anke and Appenfeller, Dennis and Lasarov, Wassili and H{\"u}ttel, Alexandra and Rehdanz, Katrin and Balderjahn, Ingo and Hoffmann, Stefan}, title = {Indirect rebound effects on the consumer level}, series = {Cleaner and responsible consumption}, volume = {3}, journal = {Cleaner and responsible consumption}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2666-7843}, doi = {10.1016/j.clrc.2021.100032}, pages = {16}, year = {2021}, abstract = {Indirect rebound effects on the consumer level occur when potential greenhouse gas emission savings from the usage of more efficient technologies or more sufficient consumption in one consumption area are partially or fully offset through the consumers' adverse behavioral responses in other areas. As both economic (e.g., price effects) and psychological (e.g., moral licensing) mechanisms can stimulate these indirect rebound effects, they have been studied in different fields, including economics, industrial ecology, psychology, and consumer research. Consequently, the literature is highly fragmented and disordered. To integrate the body of knowledge for an interdisciplinary audience, we review and summarize the previous literature, covering the microeconomic quantification of indirect rebounds based on observed expenditure behavior and the psychological processes underlying indirect rebounds. The literature review reveals that economic quantifications and psychological processes of indirect rebound effects have not yet been jointly analyzed. We derive directions for future studies, calling for a holistic research agenda that integrates economic and psychological mechanisms.}, language = {en} } @article{MaiHoffmannBalderjahn2021, author = {Mai, Robert and Hoffmann, Stefan and Balderjahn, Ingo}, title = {When drivers become inhibitors of organic consumption}, series = {Journal of the Academy of Marketing Science}, volume = {49}, journal = {Journal of the Academy of Marketing Science}, publisher = {Springer}, address = {Dordrecht}, issn = {0092-0703}, doi = {10.1007/s11747-021-00787-x}, pages = {1151 -- 1174}, year = {2021}, abstract = {The organic market is characterized by remarkable disparities, and confusion persists about which motives drive organic consumption. To understand them, this research introduces the idea that the same consumer motives can exert different and potentially opposite impacts when organic consumption patterns unfold. The proposed multistage theory of differential effects distinguishes a participation stage, when consumers decide whether to purchase organic at all, and an expenditure stage, when consumers decide about how much of their budget to spend on organic products across purchases. An analysis of shopping patterns of approximately 14,000 households confirms the proposed differential influences: Other-oriented motives (care for others and the environment) support participation but impede sustained expenditures. Only self-oriented motives (hedonism) foster both participation and expenditures. The results pinpoint the need to rethink organic consumption as a stage-specific problem, which opens up new perspectives for managers about an old but persistent problem.}, language = {en} } @article{HuettelBalderjahnHoffmann2020, author = {H{\"u}ttel, Alexandra and Balderjahn, Ingo and Hoffmann, Stefan}, title = {Welfare beyond consumption}, series = {Ecological economics}, volume = {176}, journal = {Ecological economics}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0921-8009}, doi = {10.1016/j.ecolecon.2020.106719}, pages = {13}, year = {2020}, abstract = {In developed regions worldwide, so-called anti-consumers are increasingly resisting high-level consumption lifestyles or shifting to alternative forms of consumption. A general reduction in consumption levels is considered necessary to attain global sustainability goals. However, knowledge regarding the factors driving people to deliberately consume less and how anti-consumption affects individuals' well-being is limited. Against this background, this study considers the influence of human values and the well-being effects of two types of anti-consumption: voluntary simplicity and collaborative consumption. Based on representative data from the US (N = 1075) and Germany (N = 1070), the findings show that the two anti-consumption types do not reduce the well-being of individuals' but in some cases, even improve it, which suggests that lowering consumption can not only help protect environmental resources but also serve the greater good of society. In particular, this relationship holds among collaborative consumers with a strong need for cognition, i.e., a cognitive thinking style that involves a high level of decision control. According to the study results, opposite value orientations are the drivers of voluntary simplicity and collaborative consumption (i.e., a focus on self-transcendence versus self-enhancement). These findings are comparable in both countries; however, the strength of the effects differs.}, language = {en} } @article{HoffmannBalderjahnSeegebarthetal.2018, author = {Hoffmann, Stefan and Balderjahn, Ingo and Seegebarth, Barbara and Mai, Robert and Peyer, Mathias}, title = {Under which conditions are consumers ready to boycott or buycott?}, series = {Ecological economics}, volume = {147}, journal = {Ecological economics}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0921-8009}, doi = {10.1016/j.ecolecon.2018.01.004}, pages = {167 -- 178}, year = {2018}, abstract = {There are two fundamental ways in which consumers can express their concerns and obligations for society through their consumption decisions: They can boycott companies that they deem to be irresponsible or they may deliberately buy from companies that they perceive to act responsibly ('buycott'). It has been largely ignored that individuals are driven by different motivational mechanisms to join boycotts and buycotts (punishment vs. reward of corporate behaviors), and thus, these mechanisms have disparate implications for the participating individual (e.g., high vs. low subjective costs because of a restriction in consumption habits). This paper fills this void and develops a framework suggesting that the extent to which consumers translate their concerns and obligations for society into a willingness to boycott and/or buycott is bounded by self-interest. Using a unique, representative sample of 1833 German consumers, this study reveals that the effects of environmental concerns and universalism on buycotting are amplified by hedonism, while the effects of social concern on buycotting and boycotting are attenuated by hedonism and simplicity, respectively. These results have far-reaching implications for organizations and policy planners who aim to change corporate behavior.}, language = {en} } @phdthesis{Hoffmann2016, author = {Hoffmann, Stefan}, title = {In vivo Selection of Switchable DNA-Binding Proteins}, school = {Universit{\"a}t Potsdam}, pages = {97}, year = {2016}, language = {en} } @article{BalderjahnHoffmannHuettel2023, author = {Balderjahn, Ingo and Hoffmann, Stefan and H{\"u}ttel, Alexandra}, title = {How empowerment and materialism contribute to anti-consumers' well-being}, series = {European journal of marketing}, volume = {57}, journal = {European journal of marketing}, number = {4}, publisher = {Emerald}, address = {Bradford}, issn = {0309-0566}, doi = {10.1108/EJM-04-2020-0284}, pages = {1186 -- 1218}, year = {2023}, abstract = {Purpose Because steadily growing consumption is not beneficial for nature and climate and is not the same as increasing well-being, an anti-consumerism movement has formed worldwide. The renouncement of dispensable consumption will, however, only establish itself as a significant lifestyle if consumers do not perceive reduced consumption as a personal sacrifice. Since prior research has not yielded a consistent understanding of the relationship between anti-consumption and personal well-being, this paper aims to examine three factors about which theory implies that they may moderate this relationship: decision-control empowerment, market-control empowerment and the value of materialism. Design/methodology/approach The analysis is based on data from a large-scale, representative online survey (N = 1,398). Structural equation modelling with latent interaction effects is used to test how three moderators (decision-control empowerment, market-control empowerment and materialism) affect the relationship amongst four types of anti-consumption (e.g. voluntary simplicity) and three different well-being states (e.g. subjective well-being). Findings While both dimensions of empowerment almost always directly promote consumer well-being, significant moderation effects are present in only a few but meaningful cases. Although the materialism value tends to reduce consumers' well-being, it improves the well-being effect of two anti-consumption styles. Research limitations/implications Using only one sample from a wealthy country is a limitation of the study. Researchers should replicate the findings in different nations and cultures. Practical implications Consumer affairs practitioners and commercial marketing for sustainably produced, high-quality and long-lasting goods can benefit greatly from these findings. Social implications This paper shows that sustainable marketing campaigns can more easily motivate consumers to voluntarily reduce their consumption for the benefit of society and the environment if a high level of market-control empowerment can be communicated to them. Originality/value This study provides differentiated new insights into the roles of consumer empowerment, i.e. both decision-control empowerment and market-control empowerment, and the value of materialism to frame specific relationships between different anti-consumption types and various well-being states.}, language = {en} } @article{BalderjahnHoffmann2023, author = {Balderjahn, Ingo and Hoffmann, Stefan}, title = {The Effectiveness of consume-less appeals in social marketing}, series = {Journal of macromarketing}, journal = {Journal of macromarketing}, publisher = {Sage}, address = {Thousand Oaks, Calif.}, issn = {0276-1467}, doi = {10.1177/02761467231205448}, year = {2023}, abstract = {Consume-less appeals in social marketing can help reduce the lavish consumption in wealthy countries, which poses a major threat to the climate. This study experimentally examines the effectiveness of three different types of consume-less appeals (informative, social normative, and emotional appeals) on participants' actual spending levels during a real shopping trip compared to a control group (no appeal). In addition, the study tests whether these appeals evoke negative rebounds (in terms of post-purchase climate donation) or positive rebounds (in terms of accepting post-purchase material giveaways). A field experiment in a grocery store in Germany with 170 participants shows that social normative and the emotional appeals reduce actual shopping spending. Informative and social normative appeals increase donations, and emotional appeals reduce the items of taken giveaways. The findings further support certain indirect impacts of the consume-less appeals on rebounds in terms of spending levels.}, language = {en} }