What type of witness is characterized by having extensive confidence in their own narrative?

The "know it all" type of witness is characterized by an unwavering confidence in their own narrative, often presenting their opinions as factual without acknowledging the possibility of error. This kind of witness typically believes that their knowledge and personal experiences are sufficient to provide a credible account in legal situations. Their self-assuredness may lead them to overlook inconsistencies or challenging questions that could undermine their credibility. This confidence can be both a strength and a weakness; while it may persuade some, it can also be seen as overzealous and lead to skepticism among judges or juries who value critical thinking and substantiated evidence.

In contrast, an expert witness relies on professional qualifications and specific expertise to give informed testimony, whereas the "chatterbox" type may provide excessive information without relevance, and the "scared" type often lacks confidence, which can diminish the impact of their testimony.