Imitates a vertical line (2 years)47
Imitates a horizontal line (2 years, 6 months)47
Imitates a circle (2 years, 9 months)47
Copies a vertical line (2 years, 10 months)47
Imitates vertical and horizontal line and circle
Imitates vertical line; uses modified tripod grasp typical of 3-4 year