In his 1921 book, Wolfgang Köhler described the first instance of insightful thinking in animals: One of his chimpanzees, Sultan, was presented with the task of reaching a banana that had been strung up high on the ceiling so that it was impossible to reach by jumping. Research on the Aha! moment dates back more than 100 years, to the Gestalt psychologists' first experiments on chimpanzee cognition. However, Archimedes certainly did important, original work in hydrostatics, notably in his On Floating Bodies. This story is now thought to be fictional, because it was first mentioned by the Roman writer Vitruvius nearly 200 years after the date of the alleged event, and because the method described by Vitruvius would not have worked. Having discovered how to measure the volume of an irregular object, and conceiving of a method to solve the king's problem, Archimedes allegedly leaped out and ran home naked, shouting εὕρηκα ( eureka, "I have found it!"). During a subsequent trip to a public bath, Archimedes noted that water was displaced when his body sank into the bath, and particularly that the volume of water displaced equaled the volume of his body immersed in the water. 250 BC) by the local king to determine whether a crown was pure gold. The effect is named from a story about ancient Greek polymath Archimedes. Insight is believed to occur with a break in mental fixation, allowing the solution to appear transparent and obvious. It is this elaborate rehearsal that may cause people to have better memory for Aha! moments. In order to solve insight problems, one must " think outside the box". Some research suggest that insight problems are difficult to solve because of our mental fixation on the inappropriate aspects of the problem content. After a break in mental fixation or re-evaluating the problem, the answer is retrieved. The second phase occurs suddenly and unexpectedly. The first phase of an Aha! experience requires the problem solver to come upon an impasse, where they become stuck and even though they may seemingly have explored all the possibilities, are still unable to retrieve or generate a solution. Insight can be conceptualized as a two phase process. These four attributes are not separate but can be combined because the experience of processing fluency, especially when it occurs surprisingly (for example, because it is sudden), elicits both positive affect and judged truth. First, the Aha! moment appears suddenly second, the solution to a problem can be processed smoothly, or fluently third, the Aha! moment elicits positive affect fourth, a person experiencing the Aha! moment is convinced that a solution is true. Ī recent theoretical account of the Aha! moment started with four defining attributes of this experience. Ī person utilizing insight to solve a problem is able to give accurate, discrete, all-or-nothing type responses, whereas individuals not using the insight process are more likely to produce partial, incomplete responses. Often this transition from not understanding to spontaneous comprehension is accompanied by an exclamation of joy or satisfaction, an Aha! moment. Insight is a psychological term that attempts to describe the process in problem solving when a previously unsolvable puzzle becomes suddenly clear and obvious. Some research describes the Aha! effect (also known as insight or epiphany) as a memory advantage, but conflicting results exist as to where exactly it occurs in the brain, and it is difficult to predict under what circumstances one can predict an Aha! moment. The eureka effect (also known as the Aha! moment or eureka moment) refers to the common human experience of suddenly understanding a previously incomprehensible problem or concept. A 16th century woodcut of Archimedes' eureka moment
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