-Groups of 7-9 only one was ppt rest were confederates
-Ppts were told they would be comparing line lengths
-Shown 2 large white cards, one with 1 vertical lines, other with 3 lines
-Asked to chose line from 2nd card that was same length as first
-Ppt was seated near end of group each person read put
-Confederate gave correct answer in 1st and 2nd trial not 3rd
-At end interviews were given on why they conformed