The research testified the influence of approach-avoidance motive conflict on serve performances.
这一研究证实了发球趋避动机冲突对发球表现所产生的影响。
The method of experimental research was used to probed into players irrationality of service decision made in the situation of approach-avoidance motive conflict.
采用实验法，探索运动员在趋避动机冲突情境中发球决策的非理性。
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