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==Research==
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 (psychology)|priming]], is one method for enhancing fluency. Jacoby and Dallas in 1981 argued that items from past experience are processed more fluently.<ref>Jacoby, L.L.,& Dallas, M.(1981).On the relationship between autobiographical
memory and perceptual learning. Journal of Experimental Psychology:General,
110, 306–340.</ref> 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.<ref>Whittlesea, B.W.A. (1993). Illusions of familiarity. ''Journal Of Experimental Psychology: Learning, Memory, and Cognition'', ''19'', 1235–1253.</ref> 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.<ref>Rugg, M.D.,& Curran,T.(2007). Event-related potentials and recognition memory. Trends in Cognitive Sciences, 11, 251–257.</ref> 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.<ref>Leynes, P. Andrew & Zish, Kevin. (2012). Event-related potential (ERP) evidence for fluency-based recognition memory, Neuropsychologia, Volume 50(14), 3240.</ref>
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