Okay...This research isn't exactly about Improv, but it is about laughter, and we can certainly make that connection
and you can listen to the segment at:
Hi all - i just found this site: http://www.improvcommunity.ca/about/research/areas - a lot of it stems about musical improv but the 'Improv and Social Policy' one looks interesting:
Might have to delve deeper for the statistics but let me know if you find anything of interest.
Thank you so much for providing this list! While I'm a little late to the game, this is immensely helpful!