Human-Computer Interaction: Ergonomics and User Interfaces - Vol. 1

By Hans-Jörg Bullinger; Jürgen Ziegler | Go to book overview
This method can be used on different hardware platforms at the same time and allows more than one user to be monitored at the same time.
The tests can be carried out without having to remove the tester from his/her work.
The processing of the data gathered is made easier by numerous elaboration tools for the web log file information. Moreover, setting the test does not require particularly extensive knowledge of informatics.
The hypermedial means used make it easier to prepare the material needed to instruct the testers (in our case, these are the pages explaining how the visual language "blocks" function). In other words, the problem is solved of how to organize the presentation of information to the user by allowing him/her to directly access only the information needed (which varies according to the ability of the user and the type of problem).
By registering the position of the click on the image it is also possible to automatically obtain a graphic representation of the "mental path" taken by the subject analyzing a visual program.
In general, it makes sense to state that this methodology can be applied to a variety of different research environments where interaction between users and complex images is being studied.

References
Ghittori, E. ( 1998). Usabilità dei linguaggi visuali dataflow: il problema dei costrutti di controllo. Master's Thesis, University of Pavia.
Green, T. R. G., Petre, M. ( 1996). Usability Analysis of Visual Programming Environments: A 'Cognitive Dimension' Framework. Journal of Visual Languages and Computing, 7( 2), 131-174.
Hils, D. D. ( 1992). Visual Languages and Computing Survey: Data Flow Visual Programming Languages. Journal of Visual Languages and Computing, vol. 3, 69-101.
Mosconi, M., Porta, M. ( 1998). Designing new Programming Constructs in a Data Flow VL. Proceedings of the 14th IEEE International Conference on Visual Languages (VL' 98, 1-4 September 1998, Nova Scotia, Canada).
Preece, J. ( 1993). A Guide to Usability. Human Factors in Computing. Addison Wesley.
Vose, G. M. ( 1986). LabView: Laboratory Virtual Instrument Engineering Workbench. BYTE, vol. 11, n. 9, 82-84.

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