From 2008 to present, the Skin Tone IAT was available on the Project Implicit Canada website (https://implicit.harvard.edu/implicit/canada/selectatest.jsp or https://implicit.harvard.edu/implicit/canadafr/selectatest.jsp Click on “Skin-tone” to try it yourself). The Skin Tone IAT includes one standard IAT (Light Skin face vs. Dark Skin face; Good vs. Bad objects), sets of explicit measures on attitudes related to light skin/ dark skin (such as feeling thermometer for light skin/dark skin people etc.), set of demographic questions (age, gender, race, major, political identity, etc.), and debriefing questions about how respondents thought about their IAT score after the task. The study is in English and French. From 2008 to the end of 2016, there are 26,678 session IDs created for Skin Tone IAT (English), and the overall completion rate is around 36.8%. There are 14,119 respondents who completed the standard IAT part of the task, which is 53% of the total respondents. From 2008 to the end of 2016, there are 2,740 session IDs created for Skin Tone IAT (French), and the overall completion rate is around 40.7%. There are 1,498 respondents who completed the standard IAT part of the task, which is 54.7% of the total respondents. Please contact Project Implicit at admin@projectimplicit.net for any question, comment or zip code data request.