"Implicit biases are discriminatory biases based on implicit attitudes or implicit stereotypes. Implicit biases are especially intriguing, and also especially problematic, because they can produce behavior that diverges from a person's avowed or endorsed beliefs or principles."
Greenwald, Anthony G., and Linda Hamilton Krieger. "Implicit Bias: Scientific Foundations." California Law Review 94, no. 4 (2006): 945-67. doi:10.2307/20439056.
Keith Payne, professor of psychology & neuroscience at the University of North Carolina-Chapel Hill describes how inequality shapes the human mind, asking questions such as "Why do people sometimes act in prejudiced ways toward low status groups even when they intend to be fair?" He uses experimental psychology to study the reasons behind these types of social behaviors.
Adams, V. H., Devos, T., Rivera, L. M., Smith, H., & Vega, L. A. (2014). Teaching About Implicit Prejudices and Stereotypes: A Pedagogical Demonstration. Teaching of Psychology, 41(3), 204–212. https://doi.org/10.1177/0098628314537969
The books below are available in the UNC Chapel Hill Libraries. If you aren't affiliated with UNC, contact your local library for these and other books on implicit bias.