Table 2.

Example rule set of the FIS4D.

Nº	Step Avg. Stress	Step Errors Ratio	Step Canceled	Output
1	Any	Low	Any	Difficulty + +
2	Low	Any	Any	Difficulty +
3	Medium	Medium	Any	Difficulty =
4	Any	Hight	Any	Difficulty −
5	Any	Any	Yes	Difficulty − −