Interesting Radio Interview (in German) about meetings with organizational psychologist Felix Brodbeck (LMU Munich) in which he is talking about decision making and problem-solving in groups and also: group-dynamics and „deutsche Nörgelkultur“. :)
https://www.swr.de/swr2/programm/sendungen/swr2-forum/verschwenden-wir-mit-konferenzen-unsere-zeit/-/id=660214/did=13846846/nid=660214/ua8uzn/index.html