Diversity in the workplace has become a hot-button issue in recent years, with many companies revamping their hiring processes to include more candidates from underrepresented backgrounds. But according to new research, simply adding a woman or a person of color to the applicant pool produces the same result: a non-diverse workforce.

If there is only one woman in a four-person candidate pool, statistically she has a zero percent chance of getting the job, according to research published in Harvard Business Review by academics at the University of Colorado.

The problem with corporate diversity initiatives, according to Stefanie Johnson, a professor at the University of Colorado Boulder’s Leeds School of Business, is that companies often push to include only one minority, which gives the person about the same consideration for the job as if he or she weren’t included at all.

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