Gibson suggests we have enough
sensory information to make
perception possible without processing
taking place - 'direct perception'
states that perception is dynamic not static, with
more information available as we move around
contrasted with Gregory's
constructivist theory
Gibson discounts Gregory use of visual illusions to support the
idea that we form perceptual hypotheses as illusions are artificial
and occur when people are away from natural environment
can also be explained purely by what is present in the
stimulus e.g. Muller-Lyer illusion in terms of perceptual
compromise in line length and figure it is a part of
support for Gibson's ideas in instinctive
behaviour - frog does need to form perceptual
hypotheses about a fly before catching it
likely that direct perception and Gregory's
constructivist theory are complementary -
describing different aspects of perception
Gibson makes interesting contribution to explanation of
perceptual processes and adds value with its emphasis
on the richness of the perceptual environment