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20 What does interactivity entail? What factors need to be taken into account in the design of interactive 21 systems? Although interactivity is a widely used term accorded great prominence in discussions of multi-22 media learning, even a preliminary look at the literature suggests that how interactivity is defined, and 23 what benefits it may offer, are(More)
Does learner performance of specific tasks in an interactive multimedia environment affect learning out-comes? Within a multimedia environment, users may engage in a range of actions, or interactive tasks, from tapping a keyboard to executing large motor movements. To investigate the impact of particular performance tasks on learning, we first introduce an(More)
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