Julia Cohen

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Publications by Julia Cohen (bibliography)

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Oviatt, Sharon, Arthur, Alex and Cohen, Julia (2006): Quiet interfaces that help students think. In: Proceedings of the ACM Symposium on User Interface Software and Technology 2006. pp. 191-200. Available online

As technical as we have become, modern computing has not permeated many important areas of our lives, including mathematics education which still involves pencil and paper. In the present study, twenty high school geometry students varying in ability from low to high participated in a comparative assessment of math problem solving using existing pencil and paper work practice (PP), and three different interfaces: an Anoto-based digital stylus and paper interface (DP), pen tablet interface (PT), and graphical tablet interface (GT). Cognitive Load Theory correctly predicted that as interfaces departed more from familiar work practice (GT > PT > DP), students would experience greater cognitive load such that performance would deteriorate in speed, attentional focus, meta-cognitive control, correctness of problem solutions, and memory. In addition, low-performing students experienced elevated cognitive load, with the more challenging interfaces (GT, PT) disrupting their performance disproportionately more than higher performers. The present results indicate that Cognitive Load Theory provides a coherent and powerful basis for predicting the rank ordering of users' performance by type of interface. In the future, new interfaces for areas like education and mobile computing could benefit from designs that minimize users' load so performance is more adequately supported.

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Changes to this page (author)

15 Feb 2010: Enabled abstracts to be shown on Julia Cohen's author page.
12 May 2008: Author was edited
24 Jul 2007: Author was added to the bibliography

Publication statistics

Publication period:2006-2006
Publication count:1
Number of co-authors:2



Productive colleagues

Julia Cohen's 3 most productive colleagues in number of publications:

Sharon Oviatt:16
Alex Arthur:2


Collaboration count

Number of publications with 3 favourite co-authors:

Alex Arthur:1
Sharon Oviatt:1

 

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Mar 21

Software design is the act of determining the user's experience with a piece of software. It has nothing to do with how the code works inside, or how big or small the code is. The designer's task is to specify completely and unambiguously the user's whole experience.

-- David Liddle, From Bringing Design to Software, edited by Terry Winograd, 1996

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