[4] In one study, Daniel Kahneman and Barbara Fredrickson showed subjects pleasant or aversive film clips.
When reviewing the clips mentally at a later time, subjects did not appear to take the length of the stimuli into account, instead judging them as if they were only a series of affective "snapshots".
Subjects apparently judged the experience according to the peak–end rule (in other words, according to its worst and final moments only), paying little attention to duration.
[6] Duration neglect can be observed in medicine, as it may lead patients to be inaccurate when judging whether their symptoms are improving with treatment.
[7] Some forms of duration neglect may be reduced or eliminated by having participants answer in graphical format, or give a rating for every five minutes.