Interaction of Ability Level and Interpolated Activity (Opportunity for Incubation) in Human Problem Solving

Performance on a functional fixedness problem was investigated under conditions of continuous work on the problem vs interpolation of unrelated activity, and in Ss of low vs high problem-solving ability. The performance of low-ability Ss was most proficient under the interpolated-activity condition, whereas for high-ability Ss performance was best under continuous work. It was suggested that different types of problem-solving processes occurred in low- and high-ability Ss, and that interpolated activity influenced these processes in opposite ways.