https://www.psychologytoday.com/us/blog/the-mysteries-love/202201/how-verbal-abusers-exploit-conversational-norms
The linguist and philosopher Paul Grice argued that most people tend to follow a cooperative principle, which comprises four norms, or maxims:
1. Quality: Only say what you believe to be true and backed by evidence.
2. Quantity: Don't say more or less than the conversation calls for.
3. Relevance: Don't say anything that is irrelevant to the current topic of the exchange.
4. Manner: Be clear, for instance, avoid ambiguity and obscure or cryptic expressions.
The author went on to say that verbal abusers violate one or more of these norms or maxims.
