You're having three conversations and don't know it
Charles Duhigg's research explains the fight you have with your spouse that neither of you can quite name.
You come home upset about work. You want your partner to say that sounds hard. Instead they hand you a plan for fixing it. You get more upset. They get confused, because they were trying to help.
Journalist Charles Duhigg spent years researching exactly this kind of collision, and the psychologists he interviewed kept pointing to the same structure. Nearly every conversation is secretly one of three types: practical (we're solving a problem or making a decision), emotional (I want you to feel what I feel, not fix it), or social (this is about who we are and how we see each other). Both people can be having a completely reasonable conversation and still fail to connect, simply because they're in different ones.
Duhigg's own marriage supplied the case study — his wife wanted an emotional conversation about her day; he kept offering a practical one, and both of them left feeling unheard for reasons neither could articulate.
The useful move isn't picking the "right" kind of conversation. It's noticing, mid-sentence, which one the other person actually opened — and matching it before you respond.