If you want to learn about someone, should you ask them? Two bits of research published recently cast doubt on the validity of self-report as a tool in psychology and psychiatry. The first found that teens who reported that they suffered from bullying experienced more mild 'psychotic-like' symptoms. That correlation would be consistent with the idea that these symptoms arise as a response to stress. However - the same study found that there was absolutely no correlation between peer ratings of whether someone was bullied, and their psychotic symptoms. Only self-report was associated.