Is it normal for me to have believed my sister? This all started in 3rd grade I believe, but am not completely sure whether the abuse actually started earlier than that. My personality switched from extroverted to extremely introverted between kindergarten and 1st grade. I am still a bit gullible sometimes, but am getting better at telling when people are lying or teasing (I also don't feel bad when they do anymore and just act innocent and slightly cutesy to handle the awkwardness/embarrassment of being fooled - these are random people btw and not people that I have more than one conversation with). I haven't developed the best way to deal with that type of interaction yet. To give more detail, each person would intentionally tell me that I could not do something when asking for permission, and I question them asking "really?" while they have fun leaving me hanging with the answer. I don't know if this is something that happens to everyone or not, or if I am just misunderstanding something obvious. Anyway, this was a bit of a tangent. I originally was wondering about the sibling abuse, but then thought that my gullibility could have caused me to be an easy target.