From 2009 to 2014, the Religion IAT was available on the Project Implicit demonstration website as a Multi (Four) Category IAT. The Religion MC-IAT included two religion IAT’s 1) comparing images related to Buddhism, Christianity, Islam, and Judaism and images of good and bad words 2) comparing Hinduism, Christianity, Islam, and Judaism and images of good and bad words, sets of explicit measures (such as attitudes towards the four religions), set of demographic questions (ethnicity, age, religion, etc.), and debriefing questions about how respondents thought about their IAT score after the task. From mid-2009 to early 2014, there are 285,054 session IDs created for the BCIJ (Buddhism, Christianity, Islam, and Judaism) Religion MC-IAT, and the overall completion rate is around 45.2%. There were around 127,547 respondents who completed the standard IAT part of the task, which is 44.7% of the total respondents. From mid-2009 to early 2014, there are 283,672 session IDs created for the CHIJ (Christianity, Hinduism, Islam, and Judaism) Religion MC-IAT, and the overall completion rate is around 44.7%. There were around 125,368 respondents who completed the standard IAT part of the task, which is 44.2% of the total respondents. Under this OSF project, you may download 1) Religion MC-IAT data sets with IAT score computed, self-report data labeled, and demographic information by year or for all years; 2) codebooks associated with each data set; 3) experiment materials and description of procedure. The public data sets don't have participants' zip code/postcode to protect privacy. The data sets, however, have state, county, Metropolitan Statistical Area information for respondents who reported US zip codes. If you are interested in the zip code/postcode data, you may submit an ethical approval from your institution or organization. Upon verification, you will be able to download the zip code/postcode data. Please contact Project Implicit at admin@projectimplicit.net for any question, comment or zip code data request.