ABSTRACT
Task performance time prediction is used in the design of systems and processes in order to determine whether proposed design concepts offer performance time reductions, and also to offer performance times associated with a particular task or set of tasks. Timeline analysis is an approach that can be used in order to depict scenarios in terms of tasks and their associated task performance times. Task performance times should be recorded for all of the behaviours exhibited in the system. Typically, observational analysis is used during the data collection phase. The time that the task may be performed can be found by tracing through the critical path analysis using the longest node-to-node values. The Keystroke Level model is a very simple method that is used to predict task execution time in human-computer interaction tasks. Any homing or button presses involved in the task should be recorded. The time for each component should be recorded.
