ABSTRACT: Since its first publication in 1998, the Implicit Association Test (IAT) has been used repeatedly to measure implicit attitudes and other automatic associations. Although there have also been a few studies critical of the IAT, there now exists substantial evidence for the IAT's convergent and discriminant validity, including new evidence reported in several of the articles in this special issue. IAT attitude measures have often correlated only weakly with explicit (self-report) measures of the same associations. It therefore seems appropriate to conclude that the IAT assesses constructs that are often (but not always) distinct from the corresponding constructs measured by self-report.