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Damaged Merchandise? A Review of Experiments That Compare Usability Evaluation Methods
In this review, the design of 5 experiments that compared usability evaluation methods (UEMs) are examined, showing that small problems in the way these experiments were designed and conducted call into serious question what the authors thought they knew regarding the efficacy of various UEMs.
The soft constraints hypothesis: a rational analysis approach to resource allocation for interactive behavior.
Model and data support the SCH view of resource allocation; at the under 1000-ms level of analysis, mixtures of cognitive and perceptual-motor resources are adjusted based on their cost-benefit tradeoffs for interactive behavior.
Soft constraints in interactive behavior: the case of ignoring perfect knowledge in-the-world for imperfect knowledge in-the-head
An integrated model of cognitive control in task switching.
A model of cognitive control in task switching is developed in which controlled performance depends on the system maintaining access to a code in episodic memory representing the most recently cued task, suggesting that episodic task codes play an important role in keeping the cognitive system focused under a variety of performance constraints.
Project Ernestine: Validating a GOMS Analysis for Predicting and Explaining Real-World Task Performance
The process and results of model building as well as the design and outcome of the field trial are discussed and the accuracy of GOMS predictions are assessed and the mechanisms of the models are used to explain the empirical results.
The nature and processing of errors in interactive behavior
- Wayne D. Gray
- PsychologyCogn. Sci.
- 1 June 2000
A model based on this analysis was used to trace action protocols collected from participants as they programmed a simulated VCR and yielded a control structure that combined a rule hierarchy task-to-device with display-based difference-reduction.
Forgetting to Remember: The Functional Relationship of Decay and Interference
Behavioral predictions of functional decay theory were tested in a task-switching paradigm in which memory for the current task had to be updated every few seconds, hundreds of times, and reaction times and error rates both increased gradually between updates, reflecting decay of memory forThe theory posits that when an attribute must be updated frequently in memory, its current value decays to prevent interference with later values.
Simulated task environments: The role of high-fidelity simulations, scaled worlds, synthetic environments, and laboratory tasks in basic and applied cognitive research.
- Wayne D. Gray
- Computer Science, Psychology
It is my hope that the terms and distinctions introduced in this article will further the scientific enterprise by enabling us to spend less time explaining the authors' paradigms and more time communicating their results.
TreePlus: Interactive Exploration of Networks with Enhanced Tree Layouts
- Bongshin Lee, C. Parr, Christopher Kotfila
- Computer ScienceIEEE Transactions on Visualization and Computer…
- 1 November 2006
The advantage of TreePlus over the traditional interface increased as the density of the displayed data increased and participants also reported higher levels of confidence in their answers with TreePlus and most of them preferred TreePlus.