This study probably breaks new ground:
“The Cognitive Complexity of Miss Piggy and Osama Bin Laden: Examining Linguistic Differences Between Fiction and Reality,” Hayley McCullough and Lucian Gideon Conway III, Psychology of Popular Media Culture, May 1, 2017.
The study’s authors are at the University of Montana’s Cognitive Complexity Lab.
(Thanks to Neil Martin for bringing this to our attention.)