What do the results of this experiment indicate about the role of vision during

Question

What do the results of this experiment indicate about the role of vision during catching? What do you think the results of this lab would be if people with little or no experience catching a ball were compared to people who were skilled at catching a ball? What does the results of this lab suggest about instructions that should be given to people learning how to catch a ball? Vision and Ball Catching Introduction Purpose: To demonstrate the role of vision in catching ball. Research has shown that this role includes providing information for positioning the hands and controlling the fingers Involved in providing this infor demonstrate how vision is Organize the students into groups of three. In each group, one is the participant catching a tossed ball while vision of the hands and fingers is available and should rotate these roles so that each can be a participant. Each grasp the ball. To demonstrate how vision is ion, this lab experience will compare Procedure Organize the students into groups of three. In each one is the ball tosser, and one is the scorer and ball retriever. The three students not available. participant will attempt to catch 14 tosses in each of the two vision conditions. For the condition in which vision is available, remove the opaque screen but keep all other characteristics the same. Bad tosses (those that the scorer indicates are not catchable or are tossed too far in front of the participant so that the hands could be seen) should be redone. The first two tosses in each condition are for practice and are not scored. Tosses should be moderately fast Textbook Reading Chapter 6 Task and Equipment Needed The task is to catch a ball (or beanbag) with the preferred hand. The ball is tossed underhand to the participant by a partner Mark two lines on the floor 3m (or approximately 10 ft) apart. The ball tosser should stand behind one line with his or her front foot on the line. The participant should kneel behind the opaque screen. Position himher so that his/her chin rests on the top of the opaque screen. He/she should not move his/her knees to catch Equipment: Three to five tennis balls, plastic golf balls, or boanbags per participant the bal. Catches should be made with one hand (partioipants choice) Opaque screen to shield the participant's vision of his or her hands Scoring: Use two types of performance measures: the number of catches and the type of error made when the participant does not catch a catchable ball. One type An opaque screen to obscure the final portion of a ball's flight from vision of error is the grasp error, which occurs when the hand is in the appropriate can be constructed by placing a 25 cm (10 in.) by 1 m (39 in.) piece of plywood (or any similar material) on the tops of two standard classroom chairs (or on any device that will hold the material approximately 1 m above or the back side of the fingers due to having closed the fingers too soon. The the floor). Note that the width of the plywood can be wider if necessary Arrange the chairs and wood so that the 25 cm length of the plywood is between the participant and the partner who is throwing the ball. The participant will kneel, face the throwing partner, place his or her chin on the the ball hits the fingertips only. wood, and place his or her preferred arm and hand under the wood to catch position to catch the ball but the ball is not grasped appropriately. A grasp error can be scored when the ball hits the palm of the hand, the palm side of the fingers second type of error is the position error, which occurs when the ball is not caught due to the hand being in an inappropriate spatial location for catching the ball. A position error can be scored when the ball fails to hit the palm of the hand or when the thrown balls.

Explanation / Answer

Role of vision is totally depends on concentration & Positione of hand of catcher. Proper posion of hand & proper grasp is necessary for proper catch.  

Expeiment indicate how to catch & when can error happen.

If people having less experience cause more error due to lack of grasp

For proper catch need proper hand position & grasp with proper finger control

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