TY - CHAP A1 - Speck, Melanie A1 - Rohn, Holger A1 - Engelmann, Tobias A1 - Teitscheid, Petra A1 - Langen, Nina T1 - Indicator-based assessment for meals. T2 - Proceedings of the 20th Conference of the Environmental and Sustainability Management Accounting Network (EMAN Y1 - 2016 CY - Lüneburg ER - TY - CHAP A1 - Göbel, Christine A1 - Teitscheid, Petra A1 - Friedrich, Silke A1 - Langen, Nina A1 - Speck, Melanie A1 - Engelmann, Tobias A1 - Rohn, Holger T1 - Implementing Sustainable Business Models in the Hospitality Sector with the Help of a Mission Statement T2 - Proceedings in System Dynamics and Innovation in Food Networks 2017 Y1 - 2017 SP - 323 EP - 328 ER - TY - CHAP A1 - Langen, Nina A1 - Rhozyel, Mounaim A1 - Göbel, Christine A1 - Speck, Melanie A1 - Engelmann, Tobias A1 - Rohn, Holger A1 - Teitscheid, Petra T1 - Displaying Sustainability Related Information on Meals - The Role of Design and Information Depth from a Consumer's Perspective T2 - Proceedings in System Dynamics and Innovation in Food Networks 2017 Y1 - 2017 SP - 349 EP - 359 ER - TY - CHAP A1 - Langen, Nina A1 - Bauske, Emily A1 - Dubral, Ricarda A1 - Göbel, Christine A1 - Speck, Melanie A1 - Engelmann, Tobias A1 - Rohn, Holger A1 - Teitscheid, Petra T1 - Interventions to Guide Consumers towards Sustainable Nutrition out-of-home – the Perspective of Caterers vs. Guests T2 - Proceedings in System Dynamics and Innovation in Food Networks 2017 Y1 - 2017 SP - 339 EP - 348 ER - TY - CHAP A1 - Engelmann, Tobias A1 - Speck, Melanie A1 - Rohn, Holger A1 - Bienge, Katrin A1 - Langen, Nina A1 - Howell, Eva A1 - Göbel, Christine A1 - Friedrich, Silke A1 - Teitscheid, Petra A1 - Liedtke, Christa T1 - Sustainability assessment of out of-of-home meals: potentials and obstacles applying indicator sets NAHGAST Meal-Basis and NAHGAST Meal-Pro T2 - Proceedings in System Dynamics and Innovation in Food Networks 2017 Y1 - 2017 U6 - http://dx.doi.org/10.18461/pfsd.2017.1735 SP - 329 EP - 338 ER - TY - JOUR A1 - Langen, Nina A1 - Ohlhausen, P. A1 - Friedrich, Silke A1 - Göbel, Christine A1 - Teitscheid, Petra A1 - Engelmann, Tobias A1 - Rohn, H. A1 - Bienge, K. A1 - Speck, M. T1 - Auf der Suche nach dem wirksamsten Nudge zur Absatzsteigerung nachhaltiger Speisen in der Außer-Haus-Gastronomie JF - Vierteljahrshefte zur Wirtschaftsforschung Y1 - 2018 U6 - http://dx.doi.org/10.3790/vjh.87.2.95 SN - 0340-1707 VL - 87. Jahrgang SP - 95 EP - 108 ER - TY - JOUR A1 - Engelmann, Tobias A1 - Speck, M. A1 - Rohn, H. A1 - Bienge, K. A1 - Langen, Nina A1 - Howell, E. A1 - Göbel, Christine A1 - Friedrich, Silke A1 - Teitscheid, Petra A1 - Bowry, J. A1 - Liedke, C. A1 - Monetti, S. T1 - Sustainability Assessment of Out-of-Home Meals: Potentials and Challengens of Applying the Indicator sets NAHGAST Meal-Basic and NAHGAST Meal-Pro. JF - Sustainability Journal Y1 - 2018 U6 - http://dx.doi.org/10.3390/su10020562 SP - 1 EP - 22 ER - TY - JOUR A1 - Engelmann, Tobias A1 - Fischer, Daniel A1 - Lörchner, Marianne A1 - Bowry, Jaya A1 - Rohn, Holger T1 - “Doing” Sustainability Assessment in Different Consumption and Production Contexts—Lessons from Case Study Comparison JF - Sustainability Y1 - 2019 U6 - http://dx.doi.org/10.3390/su11247041 SP - 1 EP - 25 ER - TY - JOUR A1 - Lorenz-Walther, Bettina A. A1 - Langen, Nina A1 - Göbel, Christine A1 - Engelmann, Tobias A1 - Bienge, Katrin A1 - Speck, Melanie A1 - Teitscheid, Petra T1 - What makes people leave LESS food? Testing effects of smaller portions and information in a behavioral model. JF - Appetite N2 - To contribute to a better understanding of consumer food leftovers and to facilitate their reduction in out-of-home settings, our study analyzes the effects of two common intervention strategies for reducing leftovers in a holistic behavioral model. Based on a quasi-experimental baseline-intervention design, we analyzed how the display of information posters and the reduction of portion sizes take an effect on personal, social and environmental determinants in a structural equation model. Applying data from online surveys and observations among 880 guests (503 baseline, 377 intervention) during two weeks in a university canteen, the suggested model allows to assign effects from the two interventions on plate leftovers to specific changes in behavioral determinants. Portion size reductions for target dishes are found to relate to lower levels of plate waste based on conscious perception, represented in smaller portion size ratings. Effects from seeing information posters are found to base on changed personal attitudes, subjective norms and perceived behavioral control. However, depending on how an individual reacts to the information (by only making an effort to finish all food or by making an effort and additionally choosing a different dish in the canteen) there are opposite effects on these determinants and consequently also on plate leftovers. Overall, the differentiated results on intervention effects strongly support the benefits of more holistic and in-depth analyses of interventions to reduce plate leftovers and therefore to contribute to more sustainable food consumption in out-of-home settings. KW - food waste KW - plate waste KW - portion size KW - canteen KW - perceived behavioral control Y1 - 2019 U6 - http://dx.doi.org/10.1016/j.appet.2019.03.026 VL - 139 SP - 127 EP - 144 ER - TY - JOUR A1 - Langen, Nina A1 - Ohlhausen, Pascal A1 - Steinmeier, Fara A1 - Friedrich, Silke A1 - Engelmann, Tobias A1 - Speck, Melanie A1 - Damerau, Kerstin A1 - Rohn, Holger A1 - Teitscheid, Petra T1 - Nudges for more sustainable food choices in the out-of-home catering sector applied in real-world labs JF - Resources, Conservation and Recycling N2 - Food production is responsible for approximately 17% of Germany's greenhouse gas (GHG) emissions. After retail, out-of-home catering is the second largest food sales channel in Germany. A variety of means on both the supply and demand side are necessary to stimulate, facilitate and encourage a more sustainable development and minimise GHG emissions in this sector. Nudges are one of these. This paper's focus lies on the demand side. Set in real-world laboratories, we use a standardised empirical approach to compare different nudging interventions belonging to the area of physical environment and consumers’ choice making process. We compare the effects of the same intervention across different settings and the effect of different, sequential nudging interventions in the same setting. Data was collected in eight workplace and school cafeterias in Germany over two project iterations (2016/2017; 2019/2020). A similar intervention design was applied. Comparability was assured by a harmonised menu. The first project iteration revealed that only one nudge (top menu position, +22.5%) led to significant increases in sustainable food choices, while results from the second iteration showed that all nudge interventions (best counter position, +11.6%; top menu position, +6,9%; label plus information, +15.9%) positively influenced consumer choice. Possible explanations such as the stricter compliance to the experimental design in the cafeterias but also societal developments such as the appearance of the Fridays for Future movement are discussed. As results vary between specific locations and settings, our findings suggest that nudges need to be adjusted to situational conditions for achieving highest efficacy. KW - out-of-home KW - food choices KW - nudge KW - cafeteria KW - intervention Y1 - 2022 U6 - http://dx.doi.org/10.1016/j.resconrec.2022.106167 ER -