In Solomon Asch's conformity experiments from the 1950s, the methodology was designed to test how social pressure affects individual judgment. The setup involved a group of participants who were asked to perform a simple perceptual task: matching the length of a target line to one of three comparison lines. However, each group contained only one genuine, or 'naïve,' participant. The other members were confederates, secretly working with the researcher. These confederates were instructed to unanimously provide an obviously incorrect answer on certain trials. The experiment measured whether the naïve participant would conform to the incorrect majority opinion or state the correct answer.