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Two experiments were conducted to analyze the performance of expert and novice tennis players. For testing purposes, 16-mm films were used. Subjects in both studies had to identify the type of serve presented (flat, top-spin, sliced). In Experiment 1, visual search patterns were investigated. During the ritual phase, experts focus on the shoulder/trunk areas whereas novices concentrate their search around the head of the server. During the execution phase, experts concentrate on the racquet whereas novices use more cues. Using the technique of temporal visual occlusion, the speed and accuracy of decisional processes were investigated in a second study. Results showed that expert players select valuable information during the preparatory phase and during the first part of. the execution phase. Novices must see the ritual phase until ball/racquet impact to be as accurate. Results emphasize the importance of combining sampling of eye movement and behavior parameters to sharpen our understanding of the perceptual processes underlying motor sport performance.
Goulet et al. (Fri,) studied this question.