Writing and reading hypertext: an overview
Journal of the American Society for Information Science
Hypertext: the convergence of contemporary critical theory and technology
Hypertext: the convergence of contemporary critical theory and technology
Understanding navigation and disorientation in hypermedia learning environments
Journal of Educational Multimedia and Hypermedia
Hypermedia interface design: the effects of number of links and granularity of nodes
Journal of Educational Multimedia and Hypermedia
Prioritizing Web Usability
Signposts on the digital highway
Interacting with Computers
Cognitive load in hypertext reading: A review
Computers in Human Behavior
UMAP'10 Proceedings of the 18th international conference on User Modeling, Adaptation, and Personalization
Web page previews: effect on comprehension, user perceptions, and site exploration
Journal of Information Science
Computers in Human Behavior
International Journal of Technology and Human Interaction
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The purpose of this study was to determine the effect of leads (or hypertext node previews) on cognitive load and learning. Leads provided a brief summary of information in the linked node, which helped orient the reader to the linked information. Dependent variables included measures of cognitive load: self-report of mental effort, reading time, and event-related desynchronization percentage of alpha, beta and theta brain wave rhythms; and learning performance: a recall task, and tests of domain and structural knowledge. Results indicated that use of leads reduced brain wave activity that may reflect split attention and extraneous cognitive load, and improved domain and structural knowledge acquisition. Further, findings provide insights into differentiating the types of cognitive load apparent in hypertext-assisted learning environments. Use of EEG measures allowed examination of instantaneous cognitive load, which showed that leads may be influencing germane load-reducing mental burden associated with creating coherence between two linked node. The self-report of mental effort measure appears more closely associated with overall and intrinsic load.