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<<< (previous) Explanations of this acknowledgement generally make reference to cognitive psychology by denouncing a cognitive overload due to the excess of information arriving at the same time and the incapacity to manage this flow of information. In other words, the load of information makes it difficult to store it in working memory (short-term memory) and to structure information in order to create a mental model. Indeed, animation imposes three types of load of treatment : perceptive load (several movements at the same time), conceptual load (construction of the model of the system) and charge mnemic (to retain the former states which disappeared).
Without wanted to contradict this interpretation of the results, I want to highlight another factor. More precisely, my research aims to check the influence of two factors :

  • the continuity of flow (= interactivity of animation)
  • and the permanence of former states.

My assumption is that animation is not effective because learning does not have a referent any more, since a state (frame) of the explained process supplants the preceding one and so on. The non-permanence of the former states would not allow to compare the stages between them and this strategy is useful for the comprehension of a system causes for purpose. Thus, the permanence of the former states of animation would facilitate the construction of the subjacent conceptual model.
I called this system allowing to preserve the former states of an animation, " the images' producer " (© Pierre Dillenbourg). The effect of " images' producer " (possibility of keeping on the screen the images reflecting the great stages of the conceptual model), or permanence of the former states, makes it possible to reduce the mnemic load and to be able to build the mental model of the phenomenon explained by comparing each stages of the system between them.


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© Lionel Clavien 2002
Dernière mise à jour : 3 septembre 2003