Gray W D, Boehm-Davis D A
Human Factors and Applied Cognition Program, George Mason University, MSN 3F5, Fairfax, Virginia 22030, USA.
J Exp Psychol Appl. 2000 Dec;6(4):322-35. doi: 10.1037//1076-898x.6.4.322.
Interactive behavior is constrained by the design of the artifacts available (e.g., a mouse and button) as well as by the ways in which elementary cognitive, perceptual, and motor operations can be combined. Any 2 basic activities, for example, (a) moving to and (b) clicking on a button, can be combined to yield a limited number of microstrategies. The results of an experimental study suggest that alternative microstrategies can be deployed that shave milliseconds from routine interactive behavior. Data from a usability study are used to explore the potential of microstrategies for (a) bracketing the range of individual performance, (b) profiling individual differences, and (c) diagnosing mismatches between expected and obtained performance. These 2 studies support the arguments that the microstrategies deployed can be sensitive to small features of an interface and that task analyses at the millisecond level can inform design.
交互行为受到可用人工制品的设计（例如，鼠标和按钮）以及基本认知、感知和运动操作的组合方式的限制。例如，任何两种基本活动（a）移动到按钮并（b）点击按钮，可以组合产生有限数量的微策略。一项实验研究的结果表明，可以部署替代微策略，从而从常规交互行为中节省几毫秒。可用性研究的数据用于探索微策略在以下方面的潜力：（a）界定个体表现的范围，（b）剖析个体差异，以及（c）诊断预期表现与实际表现之间的不匹配。这两项研究支持了以下观点：所部署的微策略可以对界面的微小特征敏感，并且毫秒级的任务分析可以为设计提供信息。
