hmm, that doesn't sound like dissociation, it sounds like ADHD/ADD. I have difficulties listening to instructors in a class, I'm easily distracted and zone away. Of if some one is talking directly to me I often have to ask them to repeat parts of what they said. I also interrupt people before they are done talking. I suspect I have ADHD and have psych exam scheduled for it. My primary doc did not want to be the one to make that call.