  “Implicit bias” is a term of art, used in a variety of ways. In this entry, the term is used to refer to the family of evaluative judgments and behavior assessed by implicit measures (e.g., categorization judgments on an IAT). These measures mimic some relevant aspects of judgment and decision-making outside the lab (e.g., time pressure). But what do these measures measure? With some blurry boundaries, philosophical and psychological theories can be divided into five groups. Implicit measures might provide information about attitudes (§2.1), implicit processes (§2.2), beliefs (§2.3), traits (§2.4), or situations (§2.5). 