16. REFLEX STIMULATION &
RESPONSE
DEVELOPMEN
TAL COURSE
Babinski Stroke infant’s foot from toe to
heel: toss fan out and foot twists
in.
Disappears by
about 1 year
Startle Newborn abducts and flexes all
extremities and may begin to cry
when exposed to sudden
movement or loud noise.
Disappears by 3 to
6 months
Palmar
Grasp
Press a finger against the infant’s
palm; infant grasps tightly.
Weakens after a
few hours and fades
completely after 3
to 4 months.
17.
18.
19.
20. REFLEX STIMULATION &
RESPONSE
DEVELOPMEN
TAL COURSE
Rooting Newborns turns head in direction
of stimulus, opens mouth, and
begins to suck when cheek, lip, or
corner of mouth is touched with
finger or nipple (breast feed).
Usually disappears
by 3 to 4 months.
Stepping Hold infant upright and place
bare feet on a surface: infant lifts
one foot, then the other.
Seems to disappear
at 1 to 3 months,
when body weight
begins to exceed
strength, then
reappears between
11 and 16 months.
21.
22.
23. REFLEX STIMULATION &
RESPONSE
DEVELOPMEN
TAL COURSE
Sucking Put finger in infant’s mouth;
infant sucks
Strongest in the
first 3 to 5
months but
continues
throughout
infancy.
Tonic
Neck
Put infant on back; infant
assumes “fencing” pose with
fists, one arm extended, and
head turned to one side.
Disappear at 4
months
24.
25.
26. J
(1 – 4 months)
This substage involves
coordinating sensation
and new schemas.
27.
28. J
(4 – 8 months)
During this substage, the child
becomes more focused on the
world and begins to
intentionally repeat an action in
order to trigger a response in
the environment.
29.
30.
31. J
Children begin exploring the
environment around them
and will often imitate the
observed behavior of others.
32.
33.
34. J
(12 – 18 months)
Children begin a period of
trial-and-error
experimentation during
the fifth substage.
35.
36.
37. J
Children begin to develop
symbols to represent
events or objects in the
world.
38.
39. J
At this stage, the child
can now make mental
representations and is able to
pretend. The child is now even
closer to use symbols. Lasts
approximately 2 to 7 years old.
55. J
Seriation
Ability to order or arrange
things in a series based on
one dimension such as
weight, volume or size.
56.
57. J
(Ages 12-15 years old)
Thinking becomes more
logical. They can now
solve abstract problems
and can hypothesize.
58. J
Hypothetical Reasoning
Ability to come up with
different hypothesis about a
problem and to gather and
weigh data in order to make
a final decision or judgment.
59. J
Analogical Reasoning
Ability to perceive the
relationship in one instance
and then use that
relationship to narrow down
possible answers.