Motor Development

Question 0

laterality

Answer 0

this varies with different individuals, handedness is considered to be stable by age 5 but strong preferences can be seen much earlier

Question 1

crossing midline

Answer 1

begins at 9-12 months

Question 2

bilateral integration

Answer 2

child coordinates two sides of the body begins at 9-12 months

Question 3

reaching-visual regard accompanied by batting/swiping with closed hand and abducted shoulder

Answer 3

newborn

Question 4

reaching- hands come together at midline for bilateral reaching with shoulders abducted with partial internal rotation, forearm pronation and full finger extension

Answer 4

4 months

Question 5

reaching-increased dissociation of body sides, allows for unilateral reaching with less abduction and internal rotation of the shoulder and hand is more open

Answer 5

6 months

Question 6

trunk stability improves, shoulder flexion with slight external rotation, elbow extension, forearm supination and slight wrist extension begin to emerge

Answer 6

9 months