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Published bySabrina Little Modified over 9 years ago
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Poggendorf Lab Visual Perception and Visual Illusions Relates to other vision labs, Stroop and RPS –Prism goggle lab was an optical illusion, different than a visual illusion (eye/mind distinction)
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Two Different Views of Visual Perception and Psychology in General Look for organizational principles Perception is an organized whole Whole (does not equal) Sum of Parts Bottom Up: StructuralistsTop Down: Gestaltists Look for the “building blocks” of a given phenomenon The “building blocks” of perception are sensations Whole = Sum of Parts
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The Gestaltists Used Illusions to Show that Perception was Organized Subjective Contours The Zollner Illusion The Necker Cube The Poggendorff Illusion
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The length and width of these two tables is actually the same!
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The black dots are phantom
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Can you see the Dalmatian?
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These Monsters are the same size… Illusion of converging lines toward the horizon
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Mueller-Lyer Illusion: The lines are all the same length
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Café Wall Illusion: The color and dis-alignment of the bricks causes the lines to look wavy. They are actually parallel.
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Align the “upper half” of a Poggendorff illusion line with bottom half so that there appears to be one continuous line through the box Deviation from the “actual” straight line is the Dependent Variable -measured by points Your Task: The Width of the Box, The Angle of the Line, and Practice are the Independent Variables Width Angle Deviation
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Some Results (from a previous class)
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And the ever present Practice Effect In HOT PINK!
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