About SIGMA Assessment Systems, Inc.
SIGMA Assessment Systems, Inc. is the publisher of the JVIS and JVIS.COM.

SIGMA is a founding member of the Association of Test Publishers, and has been providing products and services to human resource professionals, counselors, and psychologists for over 40 years. SIGMA publishes a variety of psychological instruments, including measures of ability, personality, and career interest. The JVIS is SIGMA's most widely used inventory for career and education planning.

SIGMA can be reached at:

	P.O. Box 610984
	Port Huron, MI 48061-0984
	Phone: 800-265-1285
	Fax: 800-361-9411
	email: customerservice@jvis.com
	Website: www.sigmaassessmentsystems.com

As a founding member of the Association of Test Publishers, SIGMA is committed to protecting your privacy and the confidentiality of your assessment data.

Douglas Jackson, Ph.D., F.R.S.C.

SIGMA's founder, Douglas Jackson, Ph.D., was a world authority in human assessment. Over the course of his long and prolific career, he published over 200 articles in refereed journals, several dozen book chapters, and held position of the Chair of the American Psychological Association's Committee on Psychological Tests and Assessments. He also served as President of the Society for Multivariate Experimental Psychology and as President of APA's Division of Measurement, Evaluation and Statistics. Dr. Jackson was elected a Fellow of the Royal Society of Canada for his contributions to psychological science.