Engaging in forecasting is a perfect example of how overconfidence can influence our behaviour. A 2017 paper called
The three faces of overconfidence suggests that the trait encompasses three distinct forms — overplacement, overestimation and overprecision.
Overplacement — it doesn’t matter if most people are abject at making market predictions, we place ourselves in the upper echelons. We are better than most people.
Overestimation — we not only think we are superior to others, but we also significantly overstate our own skill and judgement.
Overprecision — we are far too certain that we have the right answer. This can be particularly damaging for investors who are prone to under-diversify and take injudicious decisions based on forecasting prowess.