About: Multiple site entry technique

The multiple site entry technique is a strategy that can be used in online research (also called Internet-based research, Web-based research) to target different samples via different recruitment sites and compare their data. It is a method used in behavioral and social research to assess the presence and impact of self-selection effects. Self-selection effects can be considered a major challenge in social science research. With the invention of online research in the 1990s the multiple site entry technique became possible, because the recruitment of participants via different links (URLs) is very easy to implement. It can be assumed that there is no self-selection bias if the data sets coming from different recruitment sites do not differ systematically.