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A grasp is an act of taking, holding or seizing firmly with (or as if with) the hand. An example of a grasp is the handshake, wherein two people grasp one of each other's like hands. In zoology particularly, prehensility is the quality of an appendage or organ that has adapted for grasping or holding. ==Development== The development of grasping is an important component of child development stages, wherein the main types of grasps are: *''Raking grasp'', wherein the fingers, but not including the thumb, do all the holding.〔 (Page 176, section "Grasp" ) in: 〕 *''Palmar grasp'', wherein the fingers squeeze against the palm, instead of against themselves as in the ''raking grasp''.〔 Children are usually able to use a palmar grasp by the age of 6 months.〔Seminars in child and adolescent psychiatry (second edition) Ed. Simon G. Gowers. Royal College of Psychiatrists (2005) ISBN 1-904671-13-6〕〔 〕 *''Pincer grasp'' wherein the pointer finger and the thumb squeeze to grasp an object.〔 Children are usually able to use a pincer grasp by the age of 9 to 10 months.〔〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「grasp」の詳細全文を読む スポンサード リンク
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