pa2 - 10/25/10
 Perceptual
Constancy
 • ...

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Unformatted text preview: 10/25/10
 Perceptual
Constancy
 •  Size
Constancy
 –  Perceive
that
an
object
is
the
“same
size”
despite
 changes
in
the
reAnal
image.
 •  Shape
Constancy
 –  Perceive
that
an
object
is
the
“same
shape”
 despite
changes
in
orientaAon.
 Size
Constancy
 Size
Constancy
 1
 10/25/10
 TesAng
Size
Constancy
Infants
 •  HabituaAon
 •  Test
 Shape
Constancy
 Event
PercepAon
 •  Biological
MoAon
 •  Physical
Causality
 2
 10/25/10
 Biological
MoAon
 When
do
infants
detect
biological
 moAon?
 Physical
Causality
 1.  SpaAal
component
 –  Objects
need
to
touch
for
one
to
cause
the
other
 to
move
 2.  Temporal
component
 –  Objects
need
to
start
moving
within
a
reasonable
 Ame
aOer
contact
 3
 10/25/10
 Physical
Causality
 The
Role
of
Contact
 6‐month‐olds
 HabituaAon
Event:
 Physical
Causality
 The
Role
of
Contact
 Test
Events:
 Impossible
 Possible Physical
Causality
 The
Role
of
Timing
 Test
Events:
 Impossible

 Possible 4
 10/25/10
 Depth
percepAon
 •  Ability
to
perceive
near
versus
far
objects.
 –  Movement
cues
 –  Binocular
cues
 –  Monocular
cues
 Movement
Cues
for
Depth
PercepAon
 •  Available
when
either
the
perceiver
or
 object(s)
are
moving
 –  OpAcal
expansion
and
contracAon
 –  AccreAon
and
deleAon
of
texture
 –  MoAon
parallax
 OpAcal
Expansion
and
ContracAon
 •  The
expansion
and
contracAon
of
texture
 elements
 5
 10/25/10
 AccreAon
and
deleAon
of
texture
 MoAon
Parallax
 Depth
percepAon
 •  Ability
to
perceive
near
versus
far
objects.
 –  Movement
cues
 –  Binocular
cues
 –  Monocular
cues
 6
 10/25/10
 Binocular
Cues
for
Depth
 •  Ge\ng
sensory
informaAon
from
two
eyes
 –  Convergence
 –  Binocular
Disparity
 Depth
percepAon
 •  Ability
to
perceive
near
versus
far
objects.
 –  Movement
cues
 –  Binocular
cues
 –  Monocular
cues
 Monocular
Cues
for
Depth
PercepAon
 •  The
perceptual
cues
of
depth
that
can
be
 perceived
by
one
eye
alone.
 •  Pictorial
cues:
can
be
used
to
portray
depth
in
 pictures
 7
 10/25/10
 Monocular
Cues
for
Depth
PercepAon
 1.  RelaAve
Size
 Monocular
Cues
for
Depth
PercepAon
 1.  RelaAve
Size
 2.  InterposiAon
 8
 10/25/10
 Monocular
Cues
for
Depth
PercepAon
 1.  RelaAve
Size
 2.  InterposiAon
 3.  Linear
PerspecAve
 Linear
PerspecAve
 parallel
lines
 9
 10/25/10
 Linear
PerspecAve
 Monocular
Cues
for
Depth
PercepAon
 1.  2.  3.  4.  RelaAve
Size
 InterposiAon
 Linear
PerspecAve
 Texture
Gradients
 Texture
Gradients
 10
 10/25/10
 When
do
infants
use
Monocular
Cues
 for
Depth
PercepAon?
 When
do
infants
use
Monocular
Cues
 for
Depth
PercepAon?
 When
do
infants
use
Monocular
Cues
 for
Depth
PercepAon?
 11
 10/25/10
 Intermodal
percepAon
 •  Combining
of
informaAon
from
two
or
more
 sensory
systems.
 •  When
does
it
develop?


 Intermodal
PercepAon

 IntegraAng
Sight
and
Sound
 (Spelke,
1976)
 Drumbeats
 Video
A
 Peek‐a‐boo
 Speaker
 Video
B
 Playing
drum
 Baby
 Where
does
baby
look?
 Intermodal
PercepAon
 Sight
and
Sound:
Findings
 •  4‐month‐olds
can
integrate
sight
and
sound
 •  Wide
range
of
phenomena
 –  Gender
 –  Speech
sounds
 – Speech
synchrony
 –  Number
 12
 10/25/10
 Intermodal
PercepAon

 IntegraAng
Sight
and
Touch
 
(Meltzoff
&
Borton,
1979)

 1‐month‐olds
can
integrate
sight
and
touch
 (newborns
can
do
it:
Kaye
&
Bower,
1994)
 IntegraAng
Sight
and
PropriocepAon
 Intermodal
PercepAon

 
(Meltzoff
&
Moore,
1977,
1989,
1994)
 ImitaAon
at
birth:
Newborns
can
make
their
own
facial
 expressions
match
those
of
another
person.
 13
 ...
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This note was uploaded on 02/17/2011 for the course HK 453 taught by Professor Claxton during the Fall '10 term at Purdue University.

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