I didn't know where to put this news article. It really doesn't qualify as fossil news or as a non-fossil web site. However it is the type of insight that many TFF members would find interesting. So the member news is this member read this article.
The Endowment Effect is a behavior where we over value something we already own. This is important in economics since it leads to mismatch between selling and buying prices. It makes fossil trades harder too. Not every class of items has the same degree of Endowment Effect though. These researchers found that items more important for our survival or attracting a mate had larger effects. This implicates evolutionary forces in this particular cognitive deficit. Other primates share this trait as well.
https://phys.org/news/2020-05-endowment-effect-evolutionary-roots-cognitive.html