If I had to teach this in one paragraph, I would start here: loss aversion usually changes exit behavior long before it changes stated beliefs. Three quick checks before you act: 1. Name the mechanism in plain English: People rarely say "I cannot accept this loss." They say "I still believe in the thesis." The behavior gives away what the emotion is doing. 2. Say why it matters for behavior or portfolio decisions: That matters because unmanaged loss aversion often turns a review process into a delay process. 3. Set the review question: On the next review, write down the one variable that would make you change your mind. In real life: A position can stay in the book because realizing the pain feels worse than carrying the uncertainty. Common slip: The mistake is confusing emotional reluctance with analytical patience. That is usually where the edge is: not in the vocabulary, but in the structure underneath it.