摘要：Society’s development toward more sustainable lifestyles can only succeed if changes are also performed at the individual level. We, therefore investigated whether the participation of teenagers (14–19 years old) in a collective public commitment and accompanying workshop on plastic consumption strengthened their willingness and ability to take action. Previous projects such as the EcoTeam Program served as workshop templates. Over a period of five weeks, the teenagers met once a week for the workshop, an exchange of ideas, and the establishment of weekly goals for their commitment. Semi-structured interviews were carried out to investigate the outcomes directly after the project and three years later. Participants developed a more conscious environmental perception, which led to behavioral changes and the willingness to maintain or improve those changes. Beyond this outcome, most participants functioned as multipliers and ambassadors for a more sustainable lifestyle in their social environment. Even three years after the commitment project, all former participants had maintained their behavioral changes. Collective public commitment could thus be a suitable method for ESD, and a vehicle to support young people on their path to a more sustainable lifestyle.
