In its committee for psychological issues, the Advisory Group for Aerospace Research and Development (AGARD) has recommended a computer supported test battery for the examination of the mental performance: the STRES battery (Standardized Tests for Research with Environmental Stressors). Most of the tasks are based on the CTS (Criterion Task Set) battery, which was developed for the then popular C64 computer.
The individual tasks are offered via PC; the tasks are processed either by use of the keyboard/mouse of the PC or by special input elements. This enables us to log the single reaction time besides the error quota and the total input that is registered by paper-pencil-tasks. The sequence of the induividual questions is usually self-paced, i.e. answering one question directly leads to the next one. The tasks of the test battery try to examine elementary processes of the human performance apparatus; the probationer's answer is usually arranged as single reaction, choice response or tracking. We will now describe individual task types from the test battery:
The individual tasks test different aspects of performance. It is necessary to investigate, which type of task is most appropriate for a sensitive assessment of the different stressors.