Task analysis
Task analysis (TA) is a fundamental human factors methodology in the interface design process and in the assessment / reduction of human error. Human Engineering is skilled at analysing how a task is accomplished, including both manual and mental activities, task and element durations, task frequency, task allocation, environmental conditions and any other unique factors involved in, or required, for one or more people to perform a given task.
The information from Task Analyses can be used for many purposes, for example, elimination of the preconditions that give rise to errors before they occur. A TA can be used as an aid in the design stage of a new system, procedure or product, or for modifications or auditing of existing systems, procedures and products. Task analysis can also be used in a retrospective mode during the detailed investigation of incidents.
There are a number of different types of Task Analysis, a couple of frequently used ones being Tabular Task Analysis (TTA) and Hierarchical Task Analysis (HTA). All forms are concerned with the description and representation of tasks or activities, and provide organisation and structure to that description. Human Engineering is proficient in their use and is able to utilise their output to provide practicable solutions.