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Processing fluency is the ease with which information is processed. Perceptual fluency is the ease of processing stimuli based on manipulations to perceptual quality. The ease with which information can be retrieved from memory is retrieval fluency.〔Alter, A.L., & Oppenheimer, D.M. (2009). Uniting the tribes of fluency to form a metacognitive nation. ''Personality and Social Psychology Review'', ''13'', 219–235.〕 Research in cognitive neuroscience and psychology has shown that processing fluency influences different kinds of judgments. For instance, perceptual fluency can contribute to the experience of familiarity when fluent processing is attributed to the past. Repeating the presentation of a stimulus, also known as priming is one method for enhancing fluency. Jacoby and Dallas in 1981 argued that items from past experience are processed more fluently.〔Jacoby, L.L.,& Dallas, M.(1981).On the relationship between autobiographical memory and perceptual learning. Journal of Experimental Psychology:General, 110, 306–340.〕 This becomes a learned experience throughout our lifetime such that fluent items can be attributed to the past. Therefore, people sometimes take fluency as an indication that a stimulus is familiar even though the sense of familiarity is false.〔Whittlesea, B.W.A. (1993). Illusions of familiarity. ''Journal Of Experimental Psychology: Learning, Memory, and Cognition'', ''19'', 1235–1253.〕 Perceptual fluency literature has been dominated with research that posits that fluency leads to familiarity. Behavioral measures of fluency do not have the temporal resolution to properly investigate the interaction between fluency and familiarity. Event-related potentials (ERPs) are a method of averaging brainwaves that has been successful in dissociating different cognitive mechanisms due to small time scale that brainwaves are measured.〔Rugg, M.D.,& Curran,T.(2007). Event-related potentials and recognition memory. Trends in Cognitive Sciences, 11, 251–257.〕 One study was able to use a manipulation of visual clarity to change perceptual fluency during a recognition task. This manipulation effected ERPs for fluency and familiarity at different times and locations in the brain leading them to believe that these two mechanisms do not come from the same source.〔Leynes, P. Andrew & Zish, Kevin. (2012). Event-related potential (ERP) evidence for fluency-based recognition memory, Neuropsychologia, Volume 50(14), 3240.〕 Later research observed that high perceptual fluency increases the experience of positive affect.〔Reber, R., Winkielman, P. & Schwarz, N. (1998). Effects of perceptual fluency on affective judgments. ''Psychological Science'', ''9'', 45–48.〕 Research with psychophysiological methods corroborated this positive effect on affective experience: easy-to-perceive stimuli were not only judged more positively but increased activation in the zygomaticus major muscle, the so-called "smiling muscle".〔Winkielman, P., & Cacioppo, J.T. (2001). Mind at ease puts a smile on the face: Psychophysiological evidence that processing facilitation increases positive affect. ''Journal of Personality and Social Psychology'', ''81'', 989–1000.〕 The notion that processing fluency is inherently positive led to the processing fluency theory of aesthetic pleasure,〔Reber, R., Schwarz, N., Winkielman, P.: "Processing fluency and aesthetic pleasure: Is beauty in the perceiver's processing experience?", ''Personality and Social Psychology Review'', 8(4):364–382〕 and it has been used to explain people's negative reactions towards migrants, who appear to be more difficult to process than nonmigrants.〔Rubin, M., Paolini, S., & Crisp, R. J. (2010). (A processing fluency explanation of bias against migrants ). ''Journal of Experimental Social Psychology, 46,'' 21-28.〕 Other studies have shown that when presenting people with a factual statement, manipulations that make the statement easier to mentally process—even totally nonsubstantive changes like writing it in a cleaner font or making it rhyme or simply repeating it—can alter judgment of the truth of the statement, along with evaluation of the intelligence of the statement's author. This is called the "illusion-of-truth- effect. In one study, people were more likely to judge easy-to-read statements as true.〔Reber, R., & Schwarz, N. (1999). Effects of perceptual fluency on judgments of truth. ''Consciousness and Cognition'', ''8'', 338–342.〕 This means that perceived beauty and judged truth have a common underlying experience, namely processing fluency. Indeed, experiments showed that beauty is used as an indication for the correctness of mathematical solutions. This supports the idea that beauty is intuitively seen as truth.〔Reber, R. Brun, M., & Mitterndorfer, K. (2008). The use of heuristics in intuitive mathematical judgment. ''Psychonomic Bulletin & Review'', ''15'', 1174–1178.〕 Processing fluency may be one of the foundations of intuition〔Topolinski, S., & Strack, F., (2009). The architecture of intuition: Fluency and affect determine intuitive judgments of semantic and visual coherence, and of grammaticality in artificial grammar learning. ''Journal of Experimental Psychology: General'', ''138'' (1), 39–63.〕 and the "Aha!" experience.〔Topolinski, S., & Reber, R. (2010). Gaining insight into the "Aha"-experience. ''Current Directions in Psychological Science'', 19, 402-405.〕〔Wray, H. (2011, January). Aha! The 23-Across Phenomenon. ''APS Observer, 24(1)''.〕 As high processing fluency indicates that the interaction of a person with the environment goes smoothly,〔Winkielman, P., Schwarz, N., Fazendeiro, T., & Reber, R. (2003). The hedonic marking of processing fluency: Implications for evaluative judgment. In J. Musch & K.C. Klauer (Eds.), ''The Psychology of Evaluation: Affective Processes in Cognition and Emotion''. (pp. 189–217). Mahwah, NJ: Lawrence Erlbaum.〕 a person does not need to pay particular attention to the environment. By contrast, low processing fluency means that there are problems in the interaction with the environment which requires more attention and an analytical processing style to solve the problem. Indeed, people process information more shallowly when processing fluency is high and employ an analytical thinking style when processing fluency is low.〔Alter, A., Oppenheimer, D.M., Epley, N., & Eyre, R. (2007). Overcoming intuition: Metacognitive difficulty activates analytical thought. ''Journal of Experimental Psychology: General'', ''136'', 569–576.〕〔Song, H., & Schwarz, N. (2008). Fluency and the detection of misleading questions: Low processing fluency attenuates the Moses illusion. ''Social Cognition'', ''26'', 791–799.〕 Basic research on processing fluency has been applied to marketing〔Schwarz, N. (2004) Meta-cognitive experiences in consumer judgment and decision making. ''Journal of Consumer Psychology'', ''14'', 332–348.〕 to business names and to finance. For example, psychologists have determined that stocks perform better during the week following their IPO when their names are fluent/easy to pronounce and when their ticker symbols are pronounceable (e.g., KAG) vs. unpronounceable (e.g., KGH). Another recent experiment demonstrated that the long-known effect of illegible handwriting in an essay on grading is mediated by a lack of processing fluency (and not, for example, negative stereotypes related to illegible writing).〔Greifeneder, R., Alt, A., Bottenberg, K., Seele, T., Zelt, S., & Wagener, D. (2010). On writing legibly: Processing fluency systematically biases evaluations of handwritten material. ''Social Psychological and Personality Science'', ''1'', 230–237.〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Processing fluency」の詳細全文を読む スポンサード リンク
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