Membership Qualifications

Please note that membership in the Society is not linked to the possession of any degree or contingent upon belonging to some other organization.

Full Membership
An 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 publication as a first author on two articles published in a refereed journal, patents, written reports or a thesis or dissertation. Please see the appropriate sections of the Constitution and Bylaws for additional information. Only Full Members may nominate other candidates to the Society or vote in the annual Assembly of Delegates. In addition, only Full Members are eligible to serve on Sigma Xi committees or take office on the Board of Directors.

Associate Membership
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 in a field of pure or applied science. The individual is expected to later achieve the requirements for Full Membership. Nominators are attesting to the nominee's potential to be promoted to Full Membership in the future. Associate Membership is offered to encourage young investigators with promise to continue careers in research. Please see the appropriate sections of the Constitution and Bylaws for additional information.

Promotion to Full Membership
An Associate Member may be promoted to Full Membership once they have published as primary author or demonstrated other noteworthy achievements in research. Please see the Full Membership qualifications above. Only Full Members may nominate other candidates to the Society or vote in the annual Assembly of Delegates. In addition, only Full Members are eligible to serve on Sigma Xi committees or take office on the Board of Directors.

Non-discrimination Policy
Neither Sigma Xi, nor any chapter of Sigma Xi, shall discriminate against candidates for election to membership on the basis of race, religion, sex, age, national origin, or disability.