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Join Sigma Xi

If you are interested in becoming a member of the Tarleton Chapter of Sigma Xi, please visit the Sigma Xi membership webpage and request nomination through the local chapter by printing and completing the nomination form. Present the completed form to the president-elect of the Tarleton Chapter (see list of officers). Students (both graduate and undergraduate) are welcome as members.

Membership in Sigma Xi is by nomination and is conferred in one of two ways:

  • Full Membership is conferred upon any individual who has shown noteworthy achievement as an original investigator in a field of pure or applied science or engineering. The Committee on Qualifications and Membership generally requires at least two first-authored, refereed papers, or patents, one of which can be a Ph.D. thesis. Life experience also is considered in some instances.
  • Associate Membership is available to any individual who has, through initial research achievement in a field of pure or applied science, shown an aptitude for research, as evidenced by independent investigation ordinarily resulting in a written report. Associate membership is offered to encourage young investigators with promise to continue careers in research.


A nominee must be sponsored by two nominators who each must be an active (dues paid) Full Member of Sigma Xi. The nomination form may be submitted with only one nominator, since a Tarleton chapter officer or member of the Committee on Qualifications and Membership may act as the second nominator.

Nominations through Tarleton's chapter should be presented to any officer of the selected chapter, and that officer may act as the second nominator. Chapter officers will notify the nominee if additional materials are required.