School of Psychology, Georgia Institute of Technology, Atlanta, Georgia 30332-0170, USA.
Hum Factors. 2011 Dec;53(6):749-70. doi: 10.1177/0018720811419154.
The goal of this article is to investigate how instructions can be constructed to enhance performance and learning of procedural tasks.
Important determinants of the effectiveness of instructions are type of instructions (procedural information, principles, and examples) and pedagogical goal (initial performance, learning, and transfer).
Procedural instructions describe how to complete tasks in a stepwise manner, principles describe rules governing the tasks, and examples demonstrate how instances of the task are carried out. The authors review the research literature associated with each type of instruction to identify factors determining effectiveness for different pedagogical goals.
The results suggest a trade-off between usability and learnability. Specific instructions help initial performance, whereas more general instructions, requiring problem solving, help learning and transfer. Learning from instructions takes cognitive effort, and research suggests that learners typically opt for low effort. However, it is possible to meet both goals of good initial performance and learning with methods such as fading and by combining different types of instructions.
How instructions are constructed influences their effectiveness for the goals of good initial performance, learning, and transfer, and it is therefore important for researchers and practitioners alike to define the pedagogical goal of instructions.
If the goal is good initial performance, then instructions should highly resemble the task at hand (e.g., in the form of detailed procedural instructions and examples), but if the goal is good learning and transfer, then instructions should be more abstract, inducing learners to expend the necessary cognitive effort for learning.
本文旨在探讨如何构建指令以提高程序性任务的绩效和学习效果。
指令的有效性有几个重要决定因素,包括指令类型(程序性信息、原则和示例)和教学目标(初始表现、学习和迁移)。
程序性指令以逐步的方式描述如何完成任务,原则描述了任务的规则,而示例则演示了任务的实例是如何执行的。作者回顾了与每种类型的指令相关的研究文献,以确定不同教学目标下决定其有效性的因素。
结果表明可用性和可学习性之间存在权衡。具体的指令有助于初始表现,而更一般的指令,需要解决问题,有助于学习和迁移。从指令中学习需要认知努力,研究表明学习者通常选择低努力。然而,通过使用淡出和结合不同类型的指令等方法,有可能同时实现良好的初始表现和学习目标。
指令的构建方式会影响其在良好初始表现、学习和迁移目标方面的有效性,因此,研究人员和实践者都应重视定义指令的教学目标。
如果目标是良好的初始表现,那么指令应该非常类似于手头的任务(例如,以详细的程序性指令和示例的形式),但如果目标是良好的学习和迁移,那么指令应该更抽象,促使学习者付出必要的认知努力进行学习。