ABSTRACT
As was demonstrated in Chapter 7, morphological analysis is the basis for further application of quantitative design methods. Activity is a process and the main purpose of morphological analysis is to describe the structure of activity as it unfolds in time. Changes in human-computer interface characteristics influence the methods of task performance in a probabilistic manner. Each method of performance is associated with a specific structure of activity. Therefore, through analysis of the relationship between structure of activity during task performance and interface characteristics, it is possible to evaluate complexity of computer-based tasks and usability and reliability of human-computer interfaces. Precisely developed units of analysis and formalized methods of activity description facilitate the creation of formalized models of activity during task performance. Morphological analysis that includes algorithmic and time structure description can also be used as an independent from quantitative stage of analysis method of study.
