Motor Development Milestones

Question 1

Prone
Lifts head to 45°
(asymmetrically, holds momentarily)
50%

Answer 1

0.5 m

Question 2

Prone
Lifts head to 45°
(asymmetrically, holds momentarily)
90%

Answer 2

2m

Question 3

Prone prop, (weight on hands, forearms, & chest; elbows behind shoulders)
50%

Answer 3

1.5

Question 4

Prone prop, (weight on hands, forearms, & chest; elbows behind shoulders)
90%

Answer 4

3.

Question 5

Extended arm support
(weight on hands, lower abdomen, & thighs)
50%

Answer 5

4.5

Question 6

Extended arm support
(weight on hands, lower abdomen, & thighs)
90%

Answer 6

6

Question 7

Rolling prone to supine without rotation

50%

Answer 7

6

Question 8

Rolling prone to supine without rotation

90%

Answer 8

8.5

Question 9

Reaching from forearm support

50%

Answer 9

5

Question 10

Reaching from forearm support

90%

Answer 10

7

Question 11

pivoting

50%

Answer 11

5.5

Question 12

pivoting

90%

Answer 12

8

Question 13

Rolling prone to supine with rotation

50%

Answer 13

7

Question 14

Rolling prone to supine with rotation

90%

Answer 14

9.5

Question 15

Reciprocal crawling (stomach touching floor)
50%

Answer 15

7.5

Question 16

Reciprocal crawling (stomach touching floor)
90%

Answer 16

9.5

Question 17

Reciprocal creeping (stomach off floor, mature posture of legs & trunk rotation)
50%

Answer 17

8.5

Question 18

Reciprocal creeping (stomach off floor, mature posture of legs & trunk rotation)
90%

Answer 18

11

Question 19

supine
Moves head towards midline
50%

Answer 19

birth

Question 20

supine
Moves head towards midline
90%

Answer 20

0.5

Question 21

Supine
brings hands to midline
50%

Answer 21

2.5

Question 22

Supine
brings hands to midline
90%

Answer 22

4

Question 23

supine
hands to feet
50%

Answer 23

4.5

Question 24

supine
Hands to feet
90%

Answer 24

6

Question 25

Rolling supine to prone without rotation | 50%

Answer 25

5.5

Question 26

Rolling supine to prone without rotation | 90%

Answer 26

9

Question 27

Rolling supine to prone with rotation | 50%

Answer 27

6.5

Question 28

Rolling supine to prone with rotation | 90%

Answer 28

9

Question 29

Sitting with propped arms (momentarily) | 50%

Answer 29

2.5

Question 30

Sitting with propped arms (momentarily) | 90%

Answer 30

4.5

Question 31

Pull to sit (chin tuck) | 50%

Answer 31

3.5

Question 32

Pull to sit (chin tuck) | 90%

Answer 32

5

Question 33

Sitting with arm support | 50%

Answer 33

4.5

Question 34

Sitting with arm support | 90%

Answer 34

6

Question 35

Sitting with arm support | 50%

Answer 35

6

Question 36

Sitting with arm support | 90%

Answer 36

8

Question 37

Reach with rotation in sitting | 50%

Answer 37

7

Question 38

Reach with rotation in sitting | 90%

Answer 38

8

Question 39

Get to sitting* (from supine or prone) 50%

Answer 39

8.4

Question 40

Get to sitting* (from supine or prone) 90%

Answer 40

9.9

Question 41

Sitting to prone | 50%

Answer 41

8

Question 42

Sitting to prone | 90%

Answer 42

12

Question 43

Sitting to four-point kneeling | 50%

Answer 43

7.5

Question 44

Sitting to four-point kneeling | 90%

Answer 44

9.5

Question 45

``` Supported standing (intermittently bears weight) 50% ```

Answer 45

birth

Question 46

``` Supported standing (intermittently bears weight) 90% ```

Answer 46

1

Question 47

Pulls to stand with support (external object-crib, chair) | 50%

Answer 47

8

Question 48

Pulls to stand with support (external object-crib, chair) | 90%

Answer 48

9.5

Question 49

Stand 2 seconds* | 50%

Answer 49

10.2

Question 50

Stand 2 seconds* | 90%

Answer 50

11.6

Question 51

``` Stand Alone (10 seconds or more)* 50% ```

Answer 51

11.5

Question 52

``` Stand Alone (10 seconds or more)* 90% ```

Answer 52

13.7

Question 53

Standing from modified squat | 50%

Answer 53

11.5

Question 54

Standing from modified squat | 90%

Answer 54

14

Question 55

Standing from quadruped position | 50%

Answer 55

11.5

Question 56

Standing from quadruped position | 90%

Answer 56

15

Question 57

Cruising without rotation | 50%

Answer 57

9

Question 58

Cruising without rotation | 90%

Answer 58

13

Question 59

``` Early stepping (5 independent steps) 50% ```

Answer 59

11

Question 60

``` Early stepping (5 independent steps) 90% ```

Answer 60

13.5

Question 61

``` Walks alone (main mode of mobility) 50% ```

Answer 61

11.5

Question 62

``` Walks alone (main mode of mobility) 90% ```

Answer 62

14

Question 63

walks backwards | 50%

Answer 63

13.8

Question 64

walks backwards | 90%

Answer 64

16.6

Question 65

runs | 50%

Answer 65

15.8

Question 66

Runs | 90%

Answer 66

19.9