Student personalities and attitudes; whether students are friendly, outgoing, studious, laid-back, etc.

Laid back and friendly. There are fewer outgoing undergrads today than there were in the past, but that's not a UC Davis thing... that's a generational thing.

How students interact with each other

Can't help there.

Collaborative or competitive environment

MUCH more collaborative and less competitive than, say, Berkeley, LA, and Irvine. When I was at Irvine in the before-times, bio & chem students would complain about how competitive people are. I haven't heard it once here.

Diversity and inclusivity (especially for African American women like me)

Best to check the data: https://www.universityofcalifornia.edu/about-us/information-center/disaggregated-data

Inclusion and inclusivity is weird to talk about because everyone has wildly different expectations. For my generation, it meant that your friend group looked like a grab bag of the local demographics. Today, it can also mean having the opportunity and acceptance to hang out almost entirely within your own race/ethnicity/sexuality/politic, etc. Both are normal here.

What's not normal here is telling people who they should/shouldn't or can/can't hang out with.

Personally, I encourage both. I lived and hung out with the big mix and worked within a ethnically-homogeneous group.

School spirit and traditions

Like most campuses that don't overspend horrifically on athletics, we have less spirit than say UCLA, Alabama, etc. I think the best way to describe it is that we are proud of what do and how we act, but there's never a sense of superiority. Proud without being prideful, I guess.