Can someone help me to understand the effect Characteristics have on your Pokemon? I have been playing Pokemon since Blue Version, but it wasn't until Diamond and Pearl that I started thinking and caring about Natures and EV Training and IV's. The only one I am still confused on is Characteristics. I know they have some part in determining IV's, but there are a few of them for each stat. For example "Often Lost in Thought" and "Highly Curious" both go with the Sp Attack stat but how do they differ from each other? What would make me want to have one Sp Attack Characteristic over another one? Thanks for your help.