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


Looking for more information about our assessments and services? Simply fill out the form below to let us know how we can help you. We will respond as quickly as we can.

If you know what you want to purchase, complete the SIGMA-RPP Order Form and return by fax or email.

Forms & Other Information

SIGMA-RPP Order Form – Download this order form to return by email or fax

Process for Ordering Online Testing – Interested in online scoring but not sure where to start?

Qualifications Criteria – Check here to see if you are qualified

Test User Qualifications Form – Complete this form to ensure you can place an order

Research Opportunities – Complete this form to apply for a research discount

Software Downloads – Download the latest software packages