Davide-Simpson-ProfileDavid Simpson  has owned and operated Simpson Associates, a management consulting group, based in Vancouver, British Columbia, for 34 years.  Specializing in performance assessment and high-end executive search, Simpson Associates continues to grow, having recently opened offices both in Victoria, British Columbia and Toronto, Ontario.

As of March 2015, Mr. Simpson, in addition to continuing to serve as Principal of Simpson Associates, became President & CEO of TAIS Performance Systems Inc. TPSI publishes and distributes The Attentional and Interpersonal Style inventory (TAIS) and other related products and services on a world-wide basis. 

Part of the philosophy of being deeply involved in both companies is to ensure that the publishing company, TPSI, always stays close and connected to the end user customer. Because of its internal structure, TPSI is somewhat removed from end users. Continuing to be very active with Simpson Associates ensures that we never lose touch with the clientele.

Mr. Simpson graduated with a B.Sc. in Science (minor in Engineering) in 1977 from the University of Guelph, Ontario, Canada.

He also holds an advanced license, obtained in 1991, to interpret The Attentional and Interpersonal Style inventory (TAIS). He is considered one of the foremost experts with the instrument in the world.

Contact David at 604-629-2930 Ext. 252 or Cell: 604-417-4470



Leanne Maccagno joined the Simpson Group in June 2015 as Corporate Controller and is the senior individual in the organization responsible for all accounting and finance related activities. Leanne has a pivotal role in both day-to-day activities and those of a more strategic nature, including acquisitions and equity structures.

As part of her continued growth within the company, Ms. Maccagno also assumed some sales and marketing responsibilities beginning in the first quarter of 2016. Her main focus is in developing new business opportunities within TPSI, a key division within the Simpson Group which publishes and distributes psychological assessment instruments on a world-wide basis.

Prior to joining the Simpson Group, Leanne held various roles, over a 15+ year period, in accounting and finance, including those in both public practice and private enterprise. She holds an ACIA (Advanced Certificate in Accounting) which was awarded by the British Columbia Institute of Chartered Accountants in 2009. 

Ms. Maccagno is currently TPSI's primary point of contact for all customer inquiries and support requests. She can be reached directly at (250) 884-5275, or via email at


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Telephone: +1 (604) 629-2930
Toll Free (N. America):  (800) 419-7473
Customer Support: +1 (250) 884-5275