The Aha! experience is associated with a drop in the perceived difficulty of the problem.

The study investigated the correlation between the intensity of the Aha! experience and participants' subjective difficulty ratings of problems before and after finding their solutions. We assumed that the Aha! experience arises from a shift in processing fluency triggered by changing from an initially incoherent problem representation to a coherent one, which ultimately leads to the retrieval of a solution with unexpected ease and speed. First, we hypothesized that higher Aha! experience ratings would indicate more sudden solutions, manifesting in a reduced correlation between the initial difficulty ratings and solution times.

How Difficult Was It? Metacognitive Judgments About Problems and Their Solutions After the Aha Moment.

The insight phenomenon is thought to comprise two components: cognitive and affective (the Aha! experience). The exact nature of the Aha! experience remains unclear; however, several explanations have been put forward. Based on the processing fluency account, the source of the Aha! experience is a sudden increase in processing fluency, associated with emerging of a solution.

Does consciousness exist?--In what sense?

This commentary on Barutta et al. (IPBS: Integrative Psychological & Behavioral Science 44:2, 2010) elaborates the authors' ideas from a new angle. The following positions of the authors are presented and analyzed: emergetism, two different languages of the description of the phenomena, and the notion of "efficient causality".