Research off skill acquisition methods based on a schematization of bodily movement

我们已经研究了如何通过控制指令的粒度来更好地给学习者一些关于他或她的身体动作的反馈。我们把实验对象分成三组，对他们进行不同的训练。任务是学习用shaker演奏桑巴舞的节奏。第一组可以通过参考他们手臂运动的自相关功能来知道他们的手臂运动与专家的手臂运动有多接近。第二组只被告知他们的手臂动作是否正确。第三组也是最后一组没有得到任何反馈。结果，第一组的表现明显好于第三组。然而，第二组与第三组没有显著差异。我们得出结论，除了判断之外，指导有助于学习者掌握技能。我们也调查了声音技巧。我们聘请了一位专攻古典音乐的专业歌手，并要求她以不同的方式演唱。我们发现她的身体振动比她在没有专业技能的情况下唱歌时明显强烈。我们期望向学习者展示声谱图对学习者掌握发声技能有很大的帮助。

We have investigated how better we can give the learner some feedbacks on his or her bodily movements by controlling the granulity of instructions. We separated the subjects into three groups for our experiment to train them differently. The task was to learn to play a samba rhythm with shaker. The first group could know how close their arm movements are to the ones of an expert by referring to the auto correlation functions of their arm movements. The second group was only told whether their arm movements are correct. The third and last group was not given any feedback. As the result, the first group showed significantly better performance than the third one. The second group however showed no significant difference from the third one. We conclude that the direction in addition to the judgment helps the learner to master the skill. We have also investigated the vocal skill. We employed a professional singer specialized in classic music and asked her to sing differently. We found the vibration of her body to be significantly strong compared to the one when she sings without professional skills. We expect that it will greatly help the leaner acquire the vocal skill to show her the spectrum graph.