Over the years at Google, we've studied unconscious biases to understand how people make decisions in the workplace, how an inclusive culture is built and maintained, and how individuals consciously manage their behaviors and cultural contributions. Unconscious biases are mental shortcuts we automatically use to process information and make quick decisions. Research has shown that we receive millions of pieces of information, but we only consciously process about 40 of them. Cognitive filters and heuristics help us unconsciously prioritize, generalize, and dismiss large amounts of information. These shortcuts are helpful when making decisions with limited information, attention, and time in the workplace, but they can also lead us astray. Unconscious biases can prevent us from being entirely objective in our decisions – they can make us overlook great ideas, undermine personal potential, and hinder collaboration with colleagues. Understanding and overcoming unconscious bias can help us make better decisions, like recognizing great talent regardless of background, valuing great ideas no matter who originates them, and supporting and encouraging diverse perspectives and contributions throughout the workplace. While social scientists have documented its harmful effects, there is still more to learn about confronting our prejudices. To create a workplace that supports and encourages diverse thoughts, talents, and ideas, we need to provide employees with the foundation and tools to start "unbiasing," a term we use at Google to describe mitigating prejudices and providing opportunities to change initial beliefs. Being aware of unconscious bias is essential to creating a welcoming and inclusive workplace for everyone.