“…Yet most theories of problem solving have focused on explicit processes that gradually bring the problem solver closer to the solution in a deliberative way (Dorfman, Shames, & Kihlstrom, 1996). However, when an ill-defined or complex problem has to be solved (e.g., when the initial state or the goal state can lead to many different interpretations or when the solution paths are highly complex), the solution is often found by sudden insight (Pols, 2002;Reber, 1989;Schooler & Melcher, 1995;Schooler, Ohlsson, & Brooks, 1993), and regular problem-solving theories are for the most part unable to account for this apparent absence of deliberative strategy (Bowden, Jung-Beeman, Fleck, & Kounios, 2005).…”