ABSTRACT
A task analysis of the task(s) and system under analysis is the next logical step after the data collection process. Specific data is used to conduct a task analysis, allowing the task to be described in terms of the individual task steps required, the technology used in completing the task and the sequence of the task steps involved. The popularity of task analysis techniques is a direct function of their usefulness and flexibility. Task analysis techniques have evolved in response to increased levels of complexity and the increased use of teams within work settings. Hierarchical task analysis (HTA) is the most popular task analysis technique and has become perhaps the most widely used of all available Human Factors (HF) techniques. HTA is widely used in HF and often forms the first step in a number of analyses, such as human error identification, Human reliability analysis and mental workload assessment.
