stages and development of grasp

Question 1

first voluntary grasp begins between 2 and 3 months. infant squeezes object with all fingers, thumb does not participate
release is random, without voluntary control.
grasp is inefficient and infant cannot move object in hand

Answer 1

3-5 months

Question 2

radial palmar and radial digital grasping patterns emerge
infant actively uses thumb to grasp objects
infant is unable to move an object within hands but can transfer hand to hand and explore mouth
voluntary release begins at 6-7 months, infant awkwardly grasps small objects

Answer 2

6-12 months

Question 3

by 12 months, infant demonstrates pincer grasp; this grasp is precise by 18 months
by 18 months, demonstrates precision release
by 2 years, grasp is dynamic, allowing tool use; the child can use an object while holding it (toothbrush, spoon)
blended grasping patterns develop; the child can move an object while maintaining grasp of object

Answer 3

12 months-2 years

Question 4

exploratory

Answer 4

3-5 monts

Question 5

perceptual learning/transitional stage

Answer 5

6-12 months

Question 6

skill achievement/adaptability and flexibility

Answer 6

12 months-2 years