“GR System” was developed with perfect adherence to and total compliance with SOGS questionnaire, employing the cognitive learning model.

SOGS questionnaire, South Oaks Gambling Screen (Lesieur H.R., Blume S.B., 1987, Am J Psychiatry, 144:9) is an international fundamental reference in evaluating a subject’s proneness to gambling and in identifying his/her present degree of addiction - starting from his/her symptoms. It has proved to be reliable irrespective of the type of game and the gambler’s nationality or culture.
The European Green Book underlines its validity as an indicator of problematic or pathological behaviour patterns.