Proceedings of the Annual Meeting of the Cognitive Science Society

Two main classes of theory have been proposed to account forinsight problem-solving performance; those that invoke theovercoming of constraints arising from prior knowledge as thesource of insight, and those that propose strategic search formoves that make progress towards a hypothesized goal state.An experiment using matchstick algebra problems assessed thecontributions of each source. Results indicate that, while priorknowledge creates the conditions under which matchstickalgebra problems are more or less difficult to solve, search formoves that make the most apparent progress towards ahypothesized goal provides the key to eventual solution.