Bias in early childhood education occurs when adults or children believe and act on the idea that those of a different gender, socioeconomic status, religion, race, ethnicity, or other intrinsic characteristic is beneath them. Individuals who act on their biases often demonstrate a lack of respect or even antagonism through their interactions with individuals with whom they have a bias. Bias can be embodied in concrete actions and in thoughts and tendencies that underlie those actions. This entry examines characteristics that are associated with the most profound biases.