Illusion Effect on Muller-Lyer Illusion

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Illusion effect on Muller-Lyer illusion Name: Yanlin Zhang Student ID: u4760310 Tutor’s name: Jo Lane Laboratory time: Tuesday 9-11am Abstract The study examines the proportion of trials participants choose the line which is the line without wings as bigger than the line with wings that using a within-subject design. The hypothesis is that the line with wings (the line with arrow tails) which was always 100 pixels long seems like longer than the line without wings. Participants were elementary psychology students from the course of Psychology 1003. The independent variable in this experiment was the length of the comparison line and the dependent variable was the proportion of the comparison line was longer than the Muller-Lyer line. Result from the study support the hypothesis and the line with wings (the line with arrow tails) which was always 100 pixels long seems like longer Illusory effect on Muller-Lyer illusion The most famous geometric illusion is the Muller-Lyer illusion. (Tudusciuc& Nieder, 2010) F.C. Muller-Lyer(1889) devised the Muller-Lyer illusion which is an optical illusion consisting of two lines and each of them has arrowheads at the end. In virtue of the particular angles of arrowheads at the ends, it causes length misjudgement. Furthermore, the most popular studied of visual illusions is the Muller-Lyer illusion nevertheless it has been studied for a hundred years ago. (Swan, 2011) Many researchers have been found the factors and cognitive process of Muller-Lyer illusion for decades. “... It is now generally accepted several factors interacting at different levels of visual processing, ranging from low-level mechanisms such as optical blur and retinal inhibition, to high level mechanisms, such as cognitive contrast and visual attention'' (Predebon, 2004) As Muller-Lyer illusion is the most controversial and classical

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