Should I disclose gender, race, disabilities etc. in tenure track job applications? I am applying for assistant professor positions in the U.S. and Canada, and I often have to fill in forms of voluntary self-identification disclosing my gender, race, veteran status, disabilities etc. I usually do that, even though I am not certain whether and how this information could affect my prospects of getting the job.

However, recently I have been asked to a fill in a form and choose whether I make this information available to the hiring committee: 


  Please indicate whether you  
  
  
  DO NOT wish to self-identify (in which case we request that you make no indications in Sections A through D below and simply return the form with your name and the date only);
  Wish to self-identify FOR STATISTICAL PURPOSES ONLY (in which case the information you provide below will be used only by the Equity Office and will not be shared with the Appointments Committee of the Unit to which you are applying); OR
  Wish to self-identify FOR THE APPOINTMENTS PROCESS AND FOR STATISTICAL PURPOSES (in which case the information you provide below may also be used in the Appointments process, in accordance with Article 24 of the Collective Agreement)
  


(boldface emphasis is mine).

What should I do to increase my chances of getting the job and avoid standing out in a bad way?

I guess that by choosing to make the information available,


a Male, Caucasian, Non-disabled person might lose an edge due to preference towards minority candidates; while 
a Female, Black, Disabled person could gain an edge? 


But it could also go the other way around if the hiring committee has preferences that do not quite align with the official policy of supporting minorities etc.

Two somewhat related but different questions are 


"Should all voluntary self-identification forms for faculty positions be filled?" and 
"What “Applicant Confidential Data Form” has to do with tenure-track positions?".
I guess if I were Male, Caucasian, non-disabled etc I might lose an edge due to preference towards minority candidates; while if I were Female, Black, disabled etc I could gain an edge?


There are limits to how protected characteristics can be used in affirmative/positive action. By authorizing them to use this information, you can benefit from permitted affirmative/positive action if you qualify. If you do not authorize the use of the information, then you cannot benefit. In regards to permitted affirmative/positive action there is no benefit to withholding information.

There is also a possibility that this information would be used for un-permitted/illegal discrimination. In general, however, illegal affirmative action where minorities are given an advantage does not happen. Rather, there are all sorts of documented implicit and explicit biases that help white male applicants.

In my opinion, if you are not a minority (e.g., a heterosexual white christian male), there is no risk in making the information available. If you are a minority the choice is more difficult. You could benefit from affirmative/positive action, but you could also open yourself up to implicit and explicit biases.