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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.

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Presentation on theme: "Poggendorf Lab Visual Perception and Visual Illusions Relates to other vision labs, Stroop and RPS –Prism goggle lab was an optical illusion, different."— Presentation transcript:

1 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)

2 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

3 The Gestaltists Used Illusions to Show that Perception was Organized Subjective Contours The Zollner Illusion The Necker Cube The Poggendorff Illusion

4 The length and width of these two tables is actually the same!

5 The black dots are phantom

6 Can you see the Dalmatian?

7 These Monsters are the same size… Illusion of converging lines toward the horizon

8 Mueller-Lyer Illusion: The lines are all the same length

9 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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13 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

14 Some Results (from a previous class)

15 And the ever present Practice Effect In HOT PINK!


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