Please use this forum to discuss information directly related to Depersonalization Disorder. We welcome you to share your own personal experiences with others as well as any treatment or study programs you may know about. We have been forced to restructure the Forum so we could have editing access as needed and be able to Archive older comments once they disappear. Sorry for the temporary inconvenience, but now we will able to post older material for reference.
The early literature on DPD often stated that people who were above average intelligence, or more sensitive in general, were more susceptible to DPD. Many researchers still hold that belief, but probably because such people are already prone to obsessive self-analysis or existential questioning. The fact is that DP can affect anyone; the way in which they interpret it is what makes a differene. The more intelligent person is more troubled as they search for answers. The less intelligent might simply know that they feel out of sorts in some way and then try to treat the feelings in their own manner, by drinking too much or taking illicit drugs etc.
Sometimes -- not at all predictably -- "changes" seem to cause my dp/dr to "flare." So, going from one room to another can suddenly evoke the sensation that I'm dreaming, and that the room I just left is hours in the past.
What that may obliquely have to do with "intellect": I can also get a "blip" of that feeling if I'm day-dreaming or planning something, and then abruptly "change" my focus to what I'm actually doing (fixing a meal, or whatever).