The three main causes of conflict in presentations are: 1. Differences in pace - analytical and amiable styles have a slower pace while driver and expressive have a faster pace. When presenting, speakers should be aware of their audience's styles and pace and adapt their own accordingly. 2. Diametrically opposite styles - potential for conflict is high when interacting with those of opposite styles, so awareness and flexibility are important. 3. Not knowing your own style - understanding different styles, including your own, allows you to better manage interactions and adaptations to reduce frustration or conflict. Making an effort to understand styles is key.