Tuesday, September 1, 2009

Gestalt Psychology

Gestalt Psychology:


"The school or theory in psychology holding that psychological, physiological, and behavioral phenomena are irreducible experiential configurations not derivable from a simple summation of perceptual elements such as sensation and response."


(http://www.answers.com/topic/gestalt-psychology)



- Key principles of the Gestalt systems:



Emergence:


Demonstrated by the perception of the dog picture.
The dog is not recongnized by first identifying its parts, and then inferring the dog from those component parts. Instead, the dog is perceived as a whole, all at once.










Reification:

The construction or generative aspect of perception, by which the experienced percept contains more explict spatial infomation than the sensory stimulus on which it is based.


















Multistability:



The tendency of ambiguous perceptual experiences to pop back and forth between two or more alternative interpretations.











Invariance:

The property of perception whereby simple geometrical objects are recognized independent of rotation, translation, and scale


















Pragnanz:

The fundamental of gestalt perception.
-Says: we tend to orderour experience in a manner that is regular, orderly, symmetric, and simple


Gestalt Laws:

Law of Closure — The mind may experience elements it does not perceive through sensation, in order to complete a regular figure (that is, to increase regularity).

Law of Similarity — The mind groups similar elements into collective entities or totalities. This similarity might depend on relationships of form, color, size, or brightness.

Law of Proximity — Spatial or temporal proximity of elements may induce the mind to perceive a collective or totality.

Law of Symmetry (Figure ground relationships)— Symmetrical images are perceived collectively, even in spite of distance.

Law of Continuity — The mind continues visual, auditory, and kinetic patterns.

Law of Common Fate — Elements with the same moving direction are perceived as a collective or unit

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