The effectiveness of the presentation speed manipulation is shown to be independent of local attention guidance. The presentation speed conditions neither differ in the profile of attention as measured by eye tracking, nor does cueing of different clock parts to guide attention show similar enhancement of - or interference with - the understanding outcome. These results indicate that decisions about temporal design characteristics strongly determine how beneficial an animation is for knowledge acquisition. Inability to substitute presentation speed manipulation by cueing to guide attention emphasises the independence of temporal manipulations. For complex dynamic content temporal manipulations provide promising opportunities for instructional designers to adapt animations to specific demands of the depicted content and the addressed audience.
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