Itqualityassurance
- What are advantages and limitations of keystroke level model?
- Why is keystroke level model used?
- How is the GOMS KLM useful to a designer?
What are advantages and limitations of keystroke level model?
The KLM and the GOMS models have in common that they only predict behaviour of experts without errors, but in contrast the KLM needs a specified method to predict the time because it does not predict the method like GOMS. Therefore, the KLM has no goals and method selection rules, which in turn makes it easier to use.
Why is keystroke level model used?
The Keystroke-Level Model (KLM) is a relatively simple tool that allows a designer, researcher, or engineer to predict or estimate how long it will take an experienced user to complete a routine task in their software. The Keystroke-Level Model was developed in the early '80s and is still widely used today.
How is the GOMS KLM useful to a designer?
The KLM-GOMS technique can be used to compare predicted performance across different variations on a user interface. The method does not require users or a working prototype - only a description of the path through which the software is needed. KLM can also predict task times for different approaches to the same task.
