In psychology, the Asch conformity experiments or the Asch Paradigm refers to a series of studies directed by Solomon Asch studying if and how individuals yielded to or defied a majority group and the effect of such influences on beliefs and opinions - wikipedia 
Developed in the 1950s, the methodology remains in use by many researchers to the present day. Applications include the study of conformity effects of task importance, age, gender, and culture.