Kamis, 03 Maret 2011

gestalt and learning

Plural „Gestalten”) is German for “pattern”, “figure”, “shape”, or “form” It originates from the work of Max Wertheimer and his students Köhler and Koffkabut not precisely translatable, just as „Angst” is not. It is used to refer to wholes, systems and complete structures rather than the reductionist approach of seeking ever smaller components of a phenomenon. In learning, opposed to the reductionism of behaviourism, it concentrates on the way in which the mind insists on finding patterns in things, and how this contributes to learning, especially the development of “insight”.

Classic Gestalt image

gestalt1
A vase or two faces?This is the iconographic parallel of semiotic concerns about discourse. (I can't believe I just wrote that! Pretentious, moi?) Even so, I'm afraid it's (probably) accurate.
It's easy to see one or the other: almost impossible to see neither.
The classic Gestalt phenomenon is that of figure versus ground. Which is the image and which the background?
And how does the brain decide?
What is it (1)?
(Hover on the picture for the answer)
Giraffe walking past a window
Worm wriggling over a razor-blade
What is it (2)?
The point of these rather silly examples is to note the usual reaction when you work them out: there is, however trivial, a release of tension because it has been possible to assimilate a previously non-sensical image into a frame of reference. Gestalt emphasises that the mind abhors non-sense.
It is clear that some kind of cognitive re-structuring has taken place, which may then become apparent in behaviour, but seemingly precedes that behaviour. Someone has "understood" differently, so that their capacity for potential action has changed, even if that action or behaviour is not immediately manifest. Exactly what is going on in the brain we do not yet know, but there have been considerable advances in recent years (even since the first edition of this site in 2002), and neuroscience is a hot topic nowadays. (I am continuing to search for web resources in this field which are both reliable and accessible. Few are both. In the meantime see Zull, 2002 and Johnson, 2005)
The importance of the theory for real-world learning is the attention which it draws to wholes (and incidentally to problem-solving as a part of learning). Whereas behaviourism concentrates on breaking down a task into parts and how each is learned individually and incrementally, Gestalt acknowledges the “knack” element. It thus underpins all the cognitivist theories.
A "knack" is a psychomotor equivalent of cognitive "insight": the best example is probably learning to ride a bicycle. The learning "curve" (where x=time and y=skill) is more like a single step. The learning happens in a few moments, and is permanent—although it may have taken a long time to get to that step with little seeming progress.
Experimental work on Gestalt learning is primarily about the problem-solving capacities of animals: chimps spontaneously pile up boxes in order to climb on them to reach bananas, for example (Köhler, 1925). The learning element is shown by their ability to repeat the action later, without apparently having to pause and think about it as they did the first time. However, recent experiments have shown Betty the crow doing something just as ingenious and remarkable;
It also contributes to an account of some of the difficulties people have with learning: Gestalten (similar to schemata, in a different discourse), once formed, are not easily dislodged or replaced.

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