> What if people with lower cognitive ability are more likely to falsely report having had it. And that's why we generally shouldn't base studies on self repor

> What if people with lower cognitive ability are more likely to falsely report having had it. And that's why we generally shouldn't base studies on self reported data. If you had the opportunity to compare self reported data to empiric data (measured, tracked, etc.) you wouldn't believe self reported data any more, because it's heavily biased. BTW I am pretty sure we could observe significant cognitive deficits by people abducted by aliens as well...