Abstract:The sharing economy is a new promising trend with many positive outcomes on society and the environment, as it provides potential for sustainable solutions due to the reduction of resource consumption and less waste. However, research and practice show that sharing comes with its own share of problems. People often act selfishly, and in worst-case scenarios try to take advantage of others without contributing to the shared good. To achieve the higher goal of sustainability, it is important that conflicts in the sharing economy are prevented, and a setting is achieved that allows people to easily behave in a cooperative and sustainable way. The present research examines which conflicts emerge in sharing communities (study 1) and community gardens in particular (study 2), and whether regulation can prevent conflicts in large groups. Two exploratory studies were conducted. First, a qualitative study with consumers and non-consumers of the sharing economy revealed that regulatory systems are perceived as important for preventing the exploitation of other community members, but also that cooperation should not be enforced with strict controls and punishment. Rather, problems should be discussed in a democratic group setting, rules and goals should be set up together, and trust should be built. Second, a questionnaire study with community gardeners in Austria confirmed these results, and showed that trust is related to less conflict in community gardens, while harsh forms of regulation are related to a potential for greater conflict. Additionally, the results indicate that soft forms of regulation are related to fewer relationship and task conflicts, better conflict resolutions, a high sense of community, and greater trust in the community. We then discuss how these findings can be used to regulate sharing economy activities and give limitations and directions for future studies.

Sharing within communities has gained popularity in recent years. However, taking part in a community also comes with a certain amount of risk. This perceived amount of risk can be contained by regulations within a community as well as by potential participants' trust in the community and the other members. We argue for a relation between regulation and the willingness to take the risk of joining a sharing community with trust as a mediator. Thereby, we distinguish between two kinds of regulation (soft and harsh regulation) and two kinds of trust (implicit and reason-based trust) on two different levels (vertical and horizontal trust). In one laboratory and one online experiment with 432 participants overall, we found that the compound of high soft and low harsh regulation increases participants' willingness to take the risk of participation and that the effect of soft regulation is mediated mainly by vertical and horizontal reason-based trust. Based on our results, we encourage sharing communities to count on soft regulation in order to increase potential members' trust in the community and therefore take the risk to participate.

Sharing a flat with strangers is no longer hypothetical but well accepted by many consumers who participate in peer-to-peer (P2P) services. Online P2P sharing platforms act as intermediaries between providers and consumers who do not know each other personally. Sharing via platforms entails a certain amount of risk for consumers.

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