I did some research: In 2023, being encouraging improved performance in Chatbots by 10.9% In 2025, being rude improved performance by 4% In a separate study in 2025, threatening behaviour had no noticeable effect. In 2026, neutral language wins for Coding. Sarcasm and excessive politeness actually reduced accuracy.

So a combination of both? "I love you.. Now back to work you brat"