Months 9-10

Maintains balance during independent sitting^{14, 26}

Uses sitting as a functional and transitional position; static sitting is uncommon¹

Pivots 90 degrees in seated position¹⁴

Ring sit¹

Long sit with abduction or adduction at hips and extension at knees¹

Side sit¹

W-sit from 4-point¹

Tailor sit for stabilization and easy access to transitions¹

Transitions out of sit to 4-point through forward vaulting over the flexed leg or rotation of trunk and pelvis over the femur¹

Transitions from standing to sitting position through a posterior weight shift^{1, 14}