subject may not be able to determine with precision just how accurate the emotion state is but will likely be able to answer whether the emotion state is mostly correct or shows an emotion level that is clearly stronger than or weaker than the actual emotion state experienced by the subject the feedback is then used at 510 to refine and made adjustments to the process for computing an emotion factor from a characteristic numerical value if more the emotion state provided includes more than one distinct human emotion the processes 480 and 490 may be repeated once for each emotion provided the queries at 480 may be made at regular intervals and may also be made at random intervals it may be preferable that the subject be able to activate or deactivate the query process at will in addition it may prove desirable that querying be implemented at certain specific times of the day over a period of several days when the subject is likely to be in a similar psychological state such as in the morning just before or after breakfast it may also be beneficial to query the subject after an especially positive or negative experience because such experiences may help define bounds of high.