Cress, U., & Knabel, O. B. (2003). Previews in hypertexts: Effects on navigation and knowledge acquisition. Journal of Computer assisted learning, 19(4), 517-527.

Cress, U.;Knabel, O.

2003

Cress, U., & Knabel, O. B. (2003). Previews in hypertexts: Effects on navigation and knowledge acquisition. Journal of Computer assisted learning, 19(4), 517-527.

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In hypertexts, previews can be used as local tools for navigation. They pop up when a link is activated and provide information about the linked page. In an experimental study with 50 participants the effect of previews on searching and knowledge acquisition was investigated. The participants had to explore a hypertext with the aim either to understand as much as they could or to search for information. Previews enhanced knowledge acquisition in both conditions and supported intentional and incidental learning. In the searching condition previews were used for link selection, even if they could not enhance the search results.

Two different functions of previews were assumed: supporting knowledge acquisition and improving searching. For knowledge acquisition, the experiment generally confirmed the positive influence of previews. The findings about the usability of previews for searching were not as homogenous. The searching results revealed no effect of previews.

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