Exploratory - swipes at objects, reach is inaccurate; infant cannot combine reach and grasp
1 - 3 mo
Perceptual - Reaching becomes more accurate, becomes more direct; infant reaches to midline. By 6 month combines reach and grasp with two hands.
3 - 6 mo
Skill achievement/adaptability & flexibility - Reaches with one or two hands; accuracy becomes more direct reach; can change direction of reach midstream. By 8 - 9 months, infant can reach in all directions. Reach is smooth and efficient. Infant easily combines reach and grasp. Infant carries object through space.
6 - 9 mo