Twitter is often contentious, but sometimes it turns truly savage. 

Contentious 議論好き

Our brains hold clues for the ideologies we choose to live by, according to research, which has suggested that people who espouse extremist attitudes tend to perform poorly on complex mental tasks.

Espouse 支持する　加担する

disposition 傾向

https://www.theguardian.com/science/2021/feb/22/people-with-extremist-views-less-able-to-do-complex-mental-tasks-research-suggests