3. Scientists, psychologists in particular, have attempted to
discover how the human visual system perceives and grasps
entities. One of the earliest and intuitively most acceptable
theories about perception was proposed by Wertheimer in 1923,
and later elaborated by Koffka in 1935. These Gestaltists
formulated the principles or “laws” of grouping or patterning.
Gestalt is a German word which means:
whole, entity or entirety.
29. Reproductive problem solving draws
on previous experiences whereas
productive problem solving involves
insight and restructuring of the
problem.
30. Reproductive problem solving could
be a hindrance to finding a solution,
since a person may fixate on the
known aspects of a problem and so
be unable to see novel interpretations
that might lead to a solution.
31.
32. •Visual Illusions
• Reveal information about the
visual system.
• Sometimes derive from
perspective cues.