perception - 10/20/10
 Locomotor
Development


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Unformatted text preview: 10/20/10
 Locomotor
Development
 Cogni5on‐Ac5on
Tradeoff
revisited
 Training
 Floor
Condi5on:
 Easy
Motor
 Stair
Condi5on:
 Difficult
motor
 Cogni5on‐Ac5on
Tradeoff
 •  Limited
aEen5onal
resources
 •  Cogni5ve
por5on
of
task
 •  Motor
por5on
of
task
 1
 10/20/10
 Detour
Ability
 •  Knowing
how
to
get
from
A
to
B
by
alterna5ve
 routes
when
one
or
more
routes
are
blocked
 •  An
important
component
of
skilled
ac5on
 Detour
Ability:
 Lockman
1984
Study
 •  Reaching
Detour
 –  Opaque
barrier
 –  Transparent
barrier
 •  Locomotor
Detour
 –  Opaque
barrier
 –  Transparent
barrier
 Detour
Ability
 •  Reaching
vs.
Locomotor
 •  Transparent
vs.
opaque
barriers
 2
 10/20/10
 Percep5on
and
Ac5on
 Perceptual
Development
 Sensa5on
 •  The
processing
of
basic
informa5on
from
the
 external
world
by
the
sensory
receptors
in
the
 sense
organs
(eyes,
ears,
skin,
etc.)
and
brain.

 Percep5on
 •  The
process
of
organizing
and
interpre5ng
the
 sensory
informa5on.

 3
 10/20/10
 Ac5on
System
 •  Eyes
not
just
percep5on,
but
an
ac5on
system
 as
well!
 –  Exploratory
System
 Tracking
Objects
 Measuring
visual
percep5on
in
infants
 •  Preferen5al
Looking
Paradigm
 •  Habitua5on
 4
 10/20/10
 Visual
Perceptual
Development
 •  Object
Percep5on
 •  Depth
Percep5on
 Object
Percep5on
 •  PaEern
Percep5on
 •  3D
Object
Percep5on
 •  Event
Percep5on
 PaEern
Percep5on
 •  2D
features
of
objects
 •  Prefer
complex
paEerns
to
simple
s5muli.
 •  Prefer
to
look
at
faces
over
everything
else


 5
 10/20/10
 Face
Preference
  PaEern

 Percep5on
 Subjec've
contour
 PARTS
VS
WHOLE
?
 6
 10/20/10
 Percep5on
of
3D
Objects
 •  Object
segrega5on
and
the
role
of
mo5on
 •  Do
4‐month
olds
understand
object
 segrega5on?
 Percep5on
of
3D
Objects
 Perceptual
Constancy
 •  Size
Constancy
 –  Perceive
that
an
object
is
the
“same
size”
despite
 changes
in
the
re5nal
image.
 •  Shape
Constancy
 –  Perceive
that
an
object
is
the
“same
shape”
 despite
changes
in
orienta5on.
 7
 10/20/10
 Size
Constancy
 Size
Constancy
 Tes5ng
Size
Constancy
Infants
 •  Habitua5on
 •  Test
 8
 10/20/10
 Shape
Constancy
 Event
Percep5on
 •  Biological
Mo5on
 •  Physical
Causality
 Biological
Mo5on
 9
 10/20/10
 When
do
infants
detect
biological
 mo5on?
 Physical
Causality
 1.  Spa5al
component
 –  Objects
need
to
touch
for
one
to
cause
the
other
 to
move
 2.  Temporal
component
 –  Objects
need
to
start
moving
within
a
reasonable
 5me
ager
contact
 Physical
Causality
 The
Role
of
Contact
 6‐month‐olds
 Habitua5on
Event:
 10
 10/20/10
 Physical
Causality
 The
Role
of
Contact
 Test
Events:
 Impossible
 Possible Physical
Causality
 The
Role
of
Timing
 Test
Events:
 Impossible

 Possible Depth
percep5on
 •  Ability
to
perceive
near
versus
far
objects.
 –  Movement
cues
 –  Binocular
cues
 –  Monocular
cues
 11
 10/20/10
 Movement
Cues
for
Depth
Percep5on
 •  Available
when
either
the
perceiver
or
 object(s)
are
moving
 –  Op5cal
expansion
and
contrac5on
 –  Accre5on
and
dele5on
of
texture
 –  Mo5on
parallax
 Op5cal
Expansion
and
Contrac5on
 •  The
expansion
and
contrac5on
of
texture
 elements
 Accre5on
and
dele5on
of
texture
 12
 10/20/10
 Mo5on
Parallax
 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-West Lafayette.

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