Braswell Gregory S, Rosengren Karl S, Pierroutsakos Sophia L
Department of Psychology, Illinois State University, Normal, IL 61790-4620, USA.
Dev Psychobiol. 2007 Mar;49(2):216-25. doi: 10.1002/dev.20182.
Traditional accounts of motor development have described the development of grip configurations in terms of a global maturational change from immature to mature grips. We present data that demonstrate that the grip configurations of preschool-aged children are greatly influenced by task demands and are more variable than previous research has suggested. Grip configurations were most variable during free drawing. Three- to 4-year-olds with highly variable grips produced poorer quality drawings in a shape copying task than children with relatively stable grips. It is argued that the study of the development of drawing skills may best be captured by an approach which emphasizes the role of task requirements and various external and internal constraints which shape variability in grip configurations.
传统的运动发展理论认为，抓握形态的发展是一个从不成熟到成熟的整体成熟变化过程。我们提供的数据表明，学龄前儿童的抓握形态受任务需求的影响很大，且比以往研究显示的更具变异性。在自由绘画过程中，抓握形态的变异性最大。在形状临摹任务中，抓握形态高度可变的3至4岁儿童所绘制的图形质量，比抓握形态相对稳定的儿童要差。有人认为，对绘画技能发展的研究，最好采用一种强调任务要求以及各种外部和内部限制因素作用的方法，这些因素塑造了抓握形态的变异性。
