There are now at least two academic research groups on rationality, in the sense we use the word in here, in Germany that seem to be little known in the US rationality community. The point of this post is telling you they exist if you didn't already know.
When Falk Lieder was in at our European community weekend he repeatidly said that he's interested in collaborating with the wider rationality community. There's a list of publications of his group and also a Youtube channel that presents a few ideas.
The adaptive rationality group has decided to speak of rationality techniques we would likely call applied rationality techniques as "boosting decision-making" in contrast to the academic literature on nudging. I think it's worth exploring whether we should also apply their term for the cluster of techniques like Double Crux.