Kaplan and Simon's (1990) experiment presented different versions of the mutilated checkerboard problem. The main purpose of their experiment was to demonstrate that - - - - -.a. people arrive at the solution to an insight problem suddenly but proceed more methodically toward the solution of a non-insight problemb. the way the problem is represented can influence the ease of problem-solvingc. a person's mental set can hinder finding a solution to a problemd. people often have to backtrack within the problem space to arrive at an answer to a problem