Trunk rotation over femur
Protective extension, forward and sideways, transition to prone or quadruped1,6
May pull up to furniture with upper extremities through kneeling1
Can sit independently: no support10
May be able to assume sitting, but only from 4-point1,6
Has protective extension forward and sideways14
Hands more free to reach and play6,14
May use forward vaulting from ring-sitting into 4-point or prone6,14
May use forward vaulting from ring-sitting into 4-point or prone
Hands more free to reach and play
Protective extension forward and sideways; transition to prone or 4-point
Sits independently with no support
Trunk rotation over femur to reach to the side and behind.