Over the last 15 years researchers have tried to explain the differences between experts and non-experts in processing the acquired information by means of more cognitive "software" dimensions. In general, It has been shown that expertise in more cognitive domains such as chess or solving of mathematical problems, is based on the acquisition of, the rapid access to, and the efficient use of semantically rich and, therefore complicated networks of domain-specific declarative and procedural knowledge (Neuman, O. 1996) This experiment is addressed to detect the differences between the expert and non-expert dart players in different kind of information processing. In more detailed, we suppose the novice darts players use forward modeling mechanism for the precise anticipation of the required movement parameters, and on the basis of the provided parameters the movement will be executed by the generalized motor program. Opposing to this, professionals use a special motor program, which includes the forward modeling mechanism, the feedback information mechanism, and the motor program mechanism to reach the highest performance level. 12 darts player participated in this experiment, throwing their darts in four different environmental conditions into the same target area. The additional information about the performance were continuously diminished from task by task, which means at the first (normal) condition, participants were allowed to use both visual and kinesthetic information during execution but at the last condition only the kinesthetic information was allowed to use. According to our results expert players were able to reach the same performance result due to special motor program. Opposing to this, non-experts performance were diminished from task by task. This phenomenon must be caused by the difference in the information processing mechanism between expert and non expert players.
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