The Gestalt Laws of Perceptual Grouping Max Wertheimer (1923) These laws suggest how our brains prefer to group stimulus elements together to form a percept
The Gestalt Laws of Perceptual Grouping Similarity Proximity Continuity Common fate Prägnanz Closure
Tendency to fill in gaps in figures and see incomplete figures as complete Closure
Similarity We tend to group similar objects Proximity We tend to group objects together when they are near each other.
Continuity –We prefer perceptions of connected and continuous figures over disconnected and disjointed ones Common Fate – We tend to group similar objects together that share a common motion or destination
Prägnanz We perceive the simplest pattern possible This is what makes things such as proofreading a text so difficult Reality is reduced to its simplest form
Law of Pragnanz and the ‘face’ on Mars People mentally process visual information that… –is symmetrical –contains the simplest shapes possible –contains the fewest number of shapes
CAN I? Use Gestalt Psychology to explain optical illusions.
14 Necker Cube
There are only white circles at the intersections
Who is this a picture of? If you said Clinton you are correct. If you said Clinton and Gore, you Are wrong. Its a picture of Bill Clinton in the foreground and the same picture of him in the background, but with a different haircut..
The rows of black and white squares are all parallel. The vertical zigzag patterns disrupt our horizontal perception.
The center circles are both the same size.
Warped Squares? There are no curved lines in these figures. You can use a ruler to check it out. The diagonal patterns created by the tiny squares distort the perception of the pictures.
Various Illusions http://www.michaelbach.de/ot/mot_adapt/index.html http://www.michaelbach.de/ot/mot_silencing/index.html http://www.michaelbach.de/ot/mot_mib/index.html http://www.michaelbach.de/ot/mot_kaleidoscope/index.html Expanding spiral Moving color dots Motion Induced Blindness Kaleidoscope Motion
Can you find "the hidden tiger"? Not the obvious one that everyone sees. Look for words in stripes Can you see both the frog and the horse on this visual illusion?
You probably see Albert Einstein on this picture. However, if you stand up and step 15 feet away, you will see Marilyn Monroe on the same picture.
Old and Young - Crazy Optical Illusion Painting
Can you find the man’s face in the coffee beans?
1000 20 30 1000 1030 1000 + 20 ______ 4100
Dogs in the yard– black & white/color http://www.illusions.org/dp/color.htm Beach scene – color/black and white http://www.grand- illusions.com/opticalillusions/colour_illusion/