So what behaviors are observed to evoke pride?

Beats me. That's a really narrow-sounding area, and I'm a PTSD researcher. I can speak in generalities about the workings of the field as a whole, but there's no reason for me to be familiar with specific findings. I think my breadth of knowledge is enough for me to say that you're not going to find a ton on some general, quasi-emotional thing like "pride" as some kind of overarching, unitary construct. It's just not usually the way we study stuff. Trawl the databases for that term and you'll probably find little bits of tangentially-related stuff like "Ethnic pride and experiences of discrimination in elderly migrant laborers" or something. It's just the way we work. We don't sit around and ask "what's pride?"

 

...nonetheless, you can always count on the psychophys people to do something cute.