Overconfidence Bias is a cognitive bias where individuals overestimate their own abilities, knowledge, or predictions. This can lead to poor decision-making, as people may take unnecessary risks or ignore important information. For example, a person might believe they can predict stock market trends better than they actually can, leading to financial losses. This bias is common in various fields, including business and sports. In psychology, studies have shown that overconfident individuals often perform worse than they expect. Recognizing this bias can help people make more informed choices and improve their overall decision-making processes.