Established in 1967, SIGMA is proud to be a founding member of the Association of Test Publishers. We
have a history of providing the highest levels of quality and customer service. SIGMA's solutions are
used throughout the world to help select top talent, optimize leader effectiveness, identify career
interests, and assist with clinical and counseling diagnoses and interventions.
The success of any 360 feedback process depends on the anonymity of the ratings. As a founding member
of the Association of Test Publishers, SIGMA is committed to the highest standards of client confidentiality.
SIGMA uses every possible safeguard to ensure complete confidentiality.
For more information on how SIGMA can help you with your leadership development needs,
SIGMA Assessment Systems, Inc.
P.O. Box 610757
Port Huron, MI 48061-0757
For more information on SIGMA's products and services, please visit