They found that initial problem-solving tactics were constrained by perceptual features of the array, with participants solving symmetrical problems and problems with salient solutions faster.
Participants frequently used tactics that involved symmetry and salience even when other solutions that did not involve these features existed.
For instance, it is a mental process in psychology and a computerized process in computer science.
There are two different types of problems, ill-defined and well-defined: different approaches are used for each.
In a series of three experiments, the researchers asked participants to solve series of matchstick problems.