Published papers in psychology journals are authoritative sources for information. I tried googling for information related to Bill Watterson and psychology a

Published papers in psychology journals are authoritative sources for information. I tried googling for information related to Bill Watterson and psychology and couldn't find any links to the relevant information. I am sure that comedy has a lot of insights to offer scientists who study human mind, but I really dont understand why psychologists and/or psychiatrists cite his work. I would like to be proven wrong, could you direct me to the relevant interesting bits of information?