This study looked at how being too confident can affect how people make financial decisions. They analyzed 34 studies and found that overconfidence does have an impact on financial choices, but it's not a huge one. They also discovered that indirect ways of measuring overconfidence are more effective than direct methods. The research showed that overconfidence is most linked to investing, then trading, and lastly being innovative. This study suggests that while overconfidence is important in understanding financial decisions, its influence is not as strong as previously thought.