The characteristcs of children`s motor performance are slow response, low accuracy, greater var iability, inappropriate response, and ignoring KR when they perform at will. Not only physical growth, development, and maturation but also information processing capacity results in children`s motor performance deficits. In the late 1970s, motor development theorists accepted information processing model to explain the motor performance differences between adults and children. they try to clarify that whether the performance differences are due to structure(capacity) or function (control process) . To date, many researches show that the performance differnces result from children`s lack of control process rather than children`s small capacity. Children do not know how to lable the incoming information, how to rehearse to memorize the information in the long-term store, and how to organize the information already existed in their memory effectively, However, if children have enough information about specific task, they spontaneously develop adult-like memory strategy. This facts are due to their great knowledge base. Therefore, even though their sophisticated memory strategy can not compensate all their motor deficits, the role of teachers and coaches is to give children various movement experiences making their knowledge base bigger.Attribution theorists conceptualize causal ascription, the perceived causes of previous performance, as a major sources of achievement motivation. Therefore, they focus their interest on searching for the causes of events. For any given situation, however, their may be an infinite number of potential reasons why a particular event ocurrs. Many attribution theorists nowadays generally clasify these causes along three causal dimensions (internality, stability, and controllability) . They believe that individuals understand the causes and give meaning them on the basis of these dimensions. Attribution theory deals with two main areas : antecedents of attribution and the consequences of attribution. In sport-related areas, win or lose-attribution link has been the most studied of the two. In order to be a firmly established theory and to be utilized in achievement situation, further research in attribution framework is required in attribution. consequence link and in antecedent-attribution link also in addition to win or lose-antecedent link.

• 김성옥 | Seong Oh Kim