May I submit the whole of history as an area of interest? :P

The fun part is that history leaves in a lot more of the context as part of the study and leaves the proof/disproof of the thesis to the reader, and so you can use it to study people's decision-making under pressure across time. While this is most obvious with military history, case studies can be made from almost any part of history about how to respond to decisions, and why particular responses are chosen.

Deeply investigating critical decisions is so interesting.