Editing Insight (section)

====Spatial ability====
The second type of insight problem requires [[spatial ability]] to solve. An example is the "[[Nine-dot problem]]"<ref name="Nature of insight" /> which requires participants to draw four lines, through nine dots, without picking their pencil up.<ref name=Nine-dot>{{cite book|last=Sloan|first=Sam Loyd |title=Cyclopedia of puzzles |year=2007|publisher=Ishi Press International|location=Bronx, N.Y.|isbn=978-0-923891-78-7}}</ref>{{page needed|date=February 2018}}