Implicit Association Test was founded in 1998 by Tony Greenwald (University of Washington), Mahzarin Banaji (Harvard University), and Brian Nosek (University of Virginia). It offered international collaboration between researchers who are interested in implicit social cognition - thoughts and feelings outside of conscious awareness and control. The goal of is to educate the public about hidden biases and to provide a "virtual laboratory" for collecting data on the Internet.
With the rapid growth of the Internet, using the Internet to conduct psychological research is receiving increasing attention and acceptance. Internet-based research, which appeared in early 1990s, includes four basic paradigms: non-reactive data collection, Internet-based surveys, Internet-based tests and Internet-based experiments. Compared with the traditional lab research, Internet-based approach has advantages in collecting large and heterogeneous samples.