From August 14 to 18, several academic assistants and professor Weinhardt were attending the conference on "Group Decision and Negotiation" in Hohenheim, Germany. Amongst the pictorial setting of the Hohenheim Palace, researchers were discussing theoretical and empirical advances in the study of social interaction in groups and negotiations. Our assistants were contributing with articles on trust in the Sharing Economy (Florian Hawlitschek), the influence of user interface artifacts on trust (), decision biases in prediction markets (), and research goals for emotion management in small groups ().