Investigated whether people conform to group norms when they are put in an ambiguous situation. Autokinetic effect, where there is a spot of light in a dark room, that will appear to move even though it is still. He asked participants to estimate on how far the light have moved. Manipulated the groups by putting 2 people similar individual estimates and ones who was different. Each person had to say aloud how far they thought the light moved. Found after numerous estimates the group converged to a common estimate, so people look to others for guidance.