Editing Insight (section)

====Sleep====
Research has shown [[sleep]] to help produce insight.<ref name="Wagner, Gais, Haider, Verleger & Born (2004)">{{cite journal |last1= Wagner|first1=Ullrich |last2=Gais|first2=Steffen |last3=Haider|first3= Hilde |last4=Verleger|first4= Rolf |last5=Born|first5=Jan| display-authors= 3| title= Sleep inspires insight|journal=Nature|date=22 January 2004|volume=427|issue=6972|pages=352–355 |doi= 10.1038/nature02223|pmid=14737168|bibcode=2004Natur.427..352W |s2cid=4405704 }}</ref> People were initially trained on insight problems. Following training, one group was tested on the insight problems after sleeping for eight hours at night, one group was tested after staying awake all night, and one group was tested after staying awake all day. Those that slept performed twice as well on the insight problems than those who stayed awake.<ref name="Wagner, Gais, Haider, Verleger & Born (2004)" />