Qualifications for Membership 

Full Membership

Chancellor Folt_croppedAn individual who has shown noteworthy achievement as an original investigator in a field of pure or applied science is eligible for election to Full Membership.This noteworthy achievement must be evidenced by one of the following:

  • Publication as the primary author (defined in the manner appropriate to the discipline) on at least two different articles published in a refereed journal

  • Patents

  • Refereed monograph

  • Books or book chapters

Associate Membership  

Hamilton College Inductees An individual who has conducted independent investigation and written a report concerning their research is eligible for election to Associate Membership. This initial research achievement can be evidenced by one of the following: 

  • Oral or poster research presentation at a scientific conference 

  • Authorship on a refereed research article 

  • Contribution to an ongoing research project 

Promotion to Full Membership

Associate Members may be promoted to Full Membership once they satisfy the Full Membership qualifications. Promotion review will follow the same procedure as the initial nomination.

For additional details on Sigma Xi membership, please refer to the Membership Clarification Policy.

Affiliate Circle Membership 

The Affiliate Circle is open to citizen scientists, all individuals who are interested in Science, Engineering, and Math (STEM) careers, and anyone who supports the mission of Sigma Xi. To learn more about the Affiliate Circle, please click here

Sigma Xi Explorers 

Sigma Xi Explorers are K–12 students who are passionate about science and discovery and looking to enrich their learning experience by connecting to the larger research community. To learn more about and to become a Sigma Xi Explorer, please click here.  

Member Spotlight

Joannes Paulus Yimbesalu

Research Technologist II at the Medical College of Wisconsin

imbesalu received his Masters degree from New Mexico Highlands University in 2011. A long devoted biologist and humanitarian, Cameroon native Yimbesalu's current work with mice reproductive systems has him positioned at the forefront of research in the expanding field of human infertility.

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