Did you ever read something that you feel like you should have known, only it never really clicked for you until it was expressed in that precise way? That's how I felt when I read this insight into why people raise their voices:
When people have arguments, they raise their voices because they don't feel heard.
Having felt the need to raise my voice quite recently, I can attest to the accuracy of this, but hopefully it will also act as an alarm bell in my own conversations. If I never get shouted at again I'll know I'm onto something.
N.B. The article is behind a paywall on WSJ.com but as of this writing it can be read in full in the twitter app...