Sensorimotor Development for Reaching, Grasp, Release, B Hand Use

Question 1

(REACH) The infant/toddler/child:
- visual regard and swipes/bats objects c closed hand (supine)

A) 0-2 mos.
B) 3-4 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 1

0-2 mos.

Question 2

(GRASP) The infant/toddler/child:
-visual attention to object
-reflexive grasp on large object
-no attention/voluntary grasp to pellet-sized ones

A) 12-18. mos.
B) 0-2 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 2

0-2 mos.

Question 3

(RELEASE) The infant/toddler/child:
-no release

A) 8-9 mos.
B) 3-4 mos.
C) 5-6 mos.
D) 0-2 mos.

Answer 3

0-2 mos.

Question 4

(REACH) The infant/toddler/child:
-directed arm movements in supine; potential preference for one side
-brings hands together at midline for B reaching (supine)

A) 12-18. mos.
B) 3-4 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 4

3-4 mos.

Question 5

(GRASP) The infant/toddler/child:
-Visually attends to object (large & pellet-sized); does not attempt to grasp pellet-sized object
-May swipe at object (large)
-may have sustained voluntary grasp on contact (large)
-uses gross (ulnar side) hand c no thumb involvement & flexed wrist (large)
-demos primitive squeeze grasp
-upon contact c object, pull object back in hand to squeeze it unsteadily against other hand or body

A) 0-2 mos.
B) 3-4 mos.
C) 5-6 mos.
D) 8-9 mos.

Answer 5

3-4 mos.

Question 6

(RELEASE) The infant/toddler/child:
-involuntary release of objects (can technically start as early as 2 mos.)

A) 0-2 mos.
B) 3-4 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 6

3-4 mos.

Question 7

(B HAND USE) The infant/toddler/child:
-asymmetric movments prevail until___________________.

A) 12-18. mos.
B) 3-4 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 7

3(-4) mos.

Question 8

(REACH) The infant/toddler/child:
-successfully reaches desired object (use of two hands to secure & hold object against bod in midline while supine
-develops ability to move arms and hands away from bod and to approach desired object c indrect reach (supine)
-weight shifts to one side while prone and reaching for and moves desired object towards body c opposite UE using closed first/ many attempts to obtain desired object unsuccessfully

A) 12-18. mos.
B) 3-4 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 8

5-6 mos.

Question 9

(REACH) The infant/toddler/child:
-increased dissociation ob bod sides = more effective unilateral reaching
-uses of open hand
-has more direct reach c successful grasp of desired object (supine)
weight shifts to one side while prone to successfully rach/grasp desired object c opposite UE

A) 12-18. mos.
B) 3-4 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 9

5-6 mos.

Question 10

(GRASP) The infant/toddler/child:
-begins to progress toward palmar grasp
-“ulnar-palmar” grasp

A) 12-18. mos.
B) 3-4 mos.
C) 4-5 mos.
D) 18-24 mos.

Answer 10

4-5 mos.

Question 11

(GRASP) The infant/toddler/child:
-development of palmar grasp
-begins swiping/raking and contacting pellet-sized objects

A) 12-18. mos.
B) 3-4 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 11

5-6 mos.

Question 12

(RELEASE) The infant/toddler/child:
-2-stage transfer (grasping hand grasps and object before the releasing hand lets go)

A) 12-18. mos.
B) 3-4 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 12

5-6 mos.

Question 13

(REACH) The infant/toddler/child:
-weight shifts on hands and knees to reach for and grasp desired object c one UE while on opposite UE and knees support body weight (large object)
-development of radial palmar grasp (pellet-sized object)

A) 12-18. mos.
B) 6-7 mos.
C) 5-6 mos.
D) 3-4 mos.

Answer 13

6-7 mos.

Question 14

(GRASP) The infant/toddler/child:
-raking motion to get pellet-sized object into palm (pellet-sized object)
-development of radial palmar grasp (large-sized object)

A) 12-18. mos.
B) 6-7 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 14

6-7 mos.

Question 15

(RELEASE) The infant/toddler/child:
-1-stage transfer (the taking hand and releasing hand perform actions simultaneously

A) 12-18. mos.
B) 6-7 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 15

6-7 mos.

Question 16

(GRASP) The infant/toddler/child:
-develop radial digital grasp (e.g., three jaw chuck) - large object
-development of inferior pincer grasp

A) 8-9 mos.
B) 6-7 mos.
C) 5-6 mos.
D) 0-2 mos.

Answer 16

8-9 mos.

Question 17

(RELEASE) The infant/toddler/child:
-voluntary release emerges (starting as early as ~7 mos.)

A) 18-24 mos.
B) 6-7 mos.
C) 5-6 mos.
D) 8-9 mos.

Answer 17

8-9 mos.

Question 18

(REACHING) The infant/toddler/child:
-reaches c one or two hands in prone and on their hands and knees c increased accuracy and efficiency

A) 9-10 mos.
B) 6-7 mos.
C) 12-18 mos.
D) 18-24 mos.

Answer 18

9-10 mos.

Question 19

(GRASP) The infant/toddler/child:
-develops pincer grasp (pellet-sized object)

A) 12-18. mos.
B) 6-7 mos.
C) 5-6 mos.
D) 18-24 mos.
E) 8-9 mos.
F) 0-2 mos.
G) 4-5 mos.
H) 11-12 mos.
I) 9-10 mos.
J) 6-7 mos.

Answer 19

9-10 mos.

Question 20

(GRASP) The infant/toddler/child:
-develops fine pincer grasp

A) 12-18. mos.
B) 6-7 mos.
C) 11-12 mos.
D) 18-24 mos.

Answer 20

11-12 mos.

Question 21

(B HAND USE) The infant/toddler/child:
-use of both hands for different functions

A) 12-18. mos.
B) 6-7 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 21

12-18 mos.

Question 22

(B HAND USE) The infant/toddler/child:
-B hand manipulation skills emerge

A) 12-18. mos.
B) 6-7 mos.
C) 5-6 mos.
D) 18-24 mos.

Answer 22

18-24 mos.