Remembering Douglas N Jackson, Ph.D.

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Remembering Douglas N Jackson, Ph.D.

A great man was born this day in 1929, Douglas Northrup Jackson III, founder of SIGMA Assessment Systems. Dr. Jackson committed his lifework to research in human assessment. He published prolifically in the areas of personality, personality assessment, and test development methods. His psychological tests and assessments continue to have worldwide presence.

11 years after his passing, we continue to honor his legacy with our ongoing commitment to excellence in test development.

About the Author

Sharon Van Duynhoven

Office Manager

Sharon brings our tests and assessments from the development stage to marketable product. She ensures quality control at every step of a project, edits technical documents and manuals, and artistically enhances reports and resources. She also manages contracts with clients across the globe and answers technical questions.