Optimising cognitive load and usability to improve the impact of e-learning in medical education

被引:14
|
作者
Davids, M. R. [1 ]
Halperin, M. L. [2 ,3 ]
Chikte, U. M. E. [4 ]
机构
[1] Univ Stellenbosch, Fac Med & Hlth Sci, Div Nephrol, Dept Med, Cape Town, South Africa
[2] St Michaels Hosp, Div Nephrol, Li Ka Shing Knowledge Inst, Toronto, ON, Canada
[3] Univ Toronto, Toronto, ON M5S 1A1, Canada
[4] Univ Stellenbosch, Fac Med & Hlth Sci, Dept Interdisciplinary Hlth Sci, Cape Town, South Africa
来源
关键词
D O I
10.7196/AJHPE.659
中图分类号
R19 [保健组织与事业(卫生事业管理)];
学科分类号
摘要
E-learning has the potential to support the development of expertise in clinical reasoning by being able to provide students with interactive learning experiences, exposure to multiple cases, and opportunities for deliberate practice with tailored feedback. This review focuses on two important but under-appreciated factors necessary for successful e-learning, i.e. the management of the learner's cognitive load and the usability of the technology interface. Cognitive load theory views learning as involving active processing of information by working memory via separate visual and auditory channels. This system is of very limited capacity and any cognitive load that does not directly contribute to learning is considered extraneous and likely to impede learning. Researchers in cognitive load theory have provided evidence-based instructional design principles to reduce extraneous cognitive load and better manage the cognitive processing necessary for learning. Usability is a concept from the field of human-computer interaction which describes how easy technology interfaces are to use, and is routinely evaluated and optimised in the software development industry. This is seldom the case when e-learning resources are developed, especially in the area of medical education. Poor usability limits the potential benefit of educational resources, as learners experience difficulties with the technology interface while simultaneously dealing with the challenges of the content presented. Practitioners in the field of human-computer interaction have provided guidelines and methods for evaluating and optimising the usability of e-learning materials. The fields of cognitive load theory and human-computer interaction share a common goal in striving to reduce extraneous cognitive load. The load induced by poor usability of e-learning materials can be viewed as a specific component of extraneous cognitive load, adding to any load resulting from poor instructional design. The guidelines from these two fields are complementary and, if correctly implemented, may substantially improve the impact of our e-learning resources on the development of the clinical reasoning skills of students.
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页码:147 / 152
页数:6
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