A recent study from McKinsey & Company found that companies with a strong focus on diversity and inclusion are more likely to outperform their competitors. One important way to foster diversity and inclusion is to eliminate workplace bias, and one of the best ways to do that is to watch your rating system.

Researchers at the University of California, Berkeley found that when they gave people a biased rating system to use, they were more likely to give lower ratings to women and minorities. When they gave these same people a more fair and objective rating system, a big chunk of the bias went away.

Some tips for creating a more fair performance review process include:

- Use clear, objective criteria for evaluating performance, ensuring that these criteria are not biased against any protected group.

- Provide regular performance feedback throughout the year, so that employees know where they stand and can make improvements as needed.

- Encourage employees to self-assess their performance, and use this information to inform the formal review process.

- Use multiple sources of input to get a more accurate and complete picture of employees' performance.

- Train managers on how to conduct bias-free performance reviews and encourage them to seek feedback on their own performance in this area.

By following these tips, you can create a more fair and objective performance review process that helps you to identify and eliminate bias in the workplace.