David Simpson David 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 TAIS. He is considered one of the foremost experts with the instrument in the world.

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


Leanne Maccagno 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 financial activities and those of a more strategic nature, including acquisitions and equity structures.

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. She also received her TAIS certification in 2018.

In addition to her finance and accounting responsibilities, Ms. Maccagno is currently the primary point of contact for all customer inquiries and support requests, on a world-wide basis. She can be reached directly at (250) 884-5275, or via email at .


Richard Dawes Richard Dawes is the Director of Technology for TPSI, in which capacity he oversees and has complete responsibility for all aspects of the online delivery of TAIS and its related systems. His wide-ranging technical expertise, in combination with his having worked with the TAIS platform for many years in various capacities, make Mr. Dawes without doubt one of the most knowledgeable individuals on the planet with regard to the technology surrounding TAIS.

Rich hails from southern California and is an avid outdoorsman. He also has a strong interest in music and keeps busy with a number of choral groups.


Jeanne Gilbert Jeanne Gilbert has been with the Simpson Group for over 20 years and has held a variety of key positions throughout these last two decades. She received her TAIS Certification license 15+ years ago and has transitioned from a consulting role to one focused primarily on projects involving TAIS applications in Computerized Learning and Artificial Intelligence.

Ms. Gilbert has been and continues to be a cornerstone of TAIS Performance Systems Inc. (TPSI). She stands ready to help resolve issues of all kinds, especially those involving computer and software related challenges.

Jeanne can be reached at (800) 419-7443 Ext.225 or at (604) 418-3474.


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