SIGMA Assessment Systems

P.O. Box 610757
Port Huron, MI
USA 48061-0757
Phone: 1.800.265.1285
Fax: 1.800.361.9411

In Canada: Research Psychologists Press

P.O. Box 3292, Station B
London, ON
Canada N6A 4K3
Phone: 1.800.401.4480
Fax: 1.800.361.9411

Need help? Contact us by phone or fill out the form on this page. We will do our best to respond as soon as we can.

For information about company updates, new products, industry information and blog posts, sign up for the SIGMA newsletter.

Visit our FAQ page for a listing of frequently asked questions.