| Can more help be worse? The over-assisting interface (2004) | |||||||||||||
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| Can more help worse The over assisting interface Christof van Nimwegen Herre van Oostendorp Hermina Tabachneck Schijf Center for Content and Knowledge Engineering Utrecht University Padualaan Utrecht The Netherlands christof herre schijf ABSTRACT The premise this research that assistance can make interactions easier but does not necessarily aid understanding way assist users displaying relevant information interfaces Recall such knowledge unnecessary and working memory relieved Examples are visual aids such the greyingout items which can become unclickable indicating that action not possible this not done this information has inferred the user himself experiment was conducted which subjects had solve series puzzles hypothesized that providing greyed out items externalization yields better performance during initial learning interface without greying out internalization expected yield better performance later phases and better knowledge the task Subjects solved isomorph missionaries and cannibals two conditions with greyed out items and without showed that externalization had little influence performance All subjects learned quite well how solve the puzzle knowledge test however turned out different The procedural knowledge tested afterwards was equal but declarative knowledge concerning the rule central what this problem was about was worse for persons who had greyed out items Also months later the same internalization subjects had faster problem recognition the task and bett | |||||||||||||
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