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WATCH OUT for the VISUAL CLIFF

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by

eda kaya

on 2 March 2015

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Transcript of WATCH OUT for the VISUAL CLIFF

WATCH OUT FOR THE VISUAL CLIFF
History Of The Visual Cliff
S.B
. was one of the most anecdotes in psychology concerns.
He had been blind his entire life until he was
52.
Even though his sight was restored.
However even if
S.B.
did regain his sight he did not completely
perceive

depth
.

Theoretical Propositions
THE QUESTIONS
Is depth perception part of our nature or a developed skill?
METHOD
4 feet high table

made from a piece of
thick,clear glass
The
shallow side
is a solid surface with a checkered pattern
Under the other half is the same pattern
(deep side)
But it is down at the level of the floor underneath the table
RESULTS
In other words,he did not automatically perceive depth the same way the
rest of

us do
.
As we are talking about cars here is a good advertisement for our subject.
Gibson and Walk took a
''nativist''
position on this topic.
They defended that depth perception is
innate
The opposite view ,held by
empiricists
,perception of depth is
learned

from experience
What stage in development can a person or animal respond effectively to the stimuli of depth and height?
Do animal learn depth perception at different times?
THE EXPERIMENT
The subjects were
36 infants
the
6-14 months
.Also infant of mothers participated.
The infants were placed on a center board and their mothers called them on one end of table.
They repeated the test with
baby chicks,turtles,rats,lambs,goats,pigs,kittens and puppies
to test if other species noticed the cliff.
Let's look at he experiment!
Let's look at the visual cliff
experiment!
We mentioned babies' and animals' reactions of visual cliff.
So, What About Adults?

REFERENCES
Gibson E.,Walk R.(1960).
Watch out for the

Visual Cliff
http://psychology.wikia.com
9 children

in the study
refused t
o

move
at
all off the center board.
Other 27
were called by their m
o
thers
from the shallow side and
crawl
ed off
the board
and crossed the glass.

Only 3
crept with
great hesitation
off

the brink off the visual cliff
Most animals did not cross over
Animals are on the Visual Cliff Experiment

such as the
baby chicks,lambs,cats,goats.
Rats
did not cross over the deep side because they are nocturnal creatures.Their
whiskers
help for perceive depth.
The worst performance was belong to
turtles
.Because they are see animal.
CRITICISMS
Mainly focus on,whether they actually proved depth perception innate in humans,because
all the subjects had already learned to avoid situa
tions.
A later study placed babies ages
2-5 months.
the glass over a deep side of the visual cliff showed the babies decrease in heart rate,
being a sign of interest not fear.


SUBSEQUENT RESEARCH
The mothers were told to make happy faces for the baby to crawl over the cliff and scared faces for the baby to have hesitation whether to stay on the shallow side or the deep side.
Importance Of Social Referencing
RECENT APPLICATIONS
Scientist Strickland developed a system that incorporates virtual reality to help
autistic children
safely interact with around them.
Another study is by Berger and Adolph (2003) to test
how babies recognize the height.
They used the bridges of different
height,width
and
some handrails.
They found
babies tended
to
cross wide bridges over narrow ones.
RECENT APPLICATIONS -2
CONCLUSION
Behavioral scientists were debating whether this or other perceptual abilities are
innate
or
learned

later.
The truth may be compromise between
nature
and
nurture.
Before my presentation...
6 October 1923 – 28 February 2015
Full transcript