Asch (1956) found that group size influenced whether subjects conformed. The bigger the majority group (no of confederates), the more people conformed, but only up to a certain point. ... Increasing the size of the majority beyond three did not increase the levels of conformity found.

Does conformity increases with group size?

Conformity tends to increase when more people are present.

However, there is little change once the group size goes beyond four or five people.

Does group size matter in conformity?

It has been found in experiments that the impact of conformity, especially compliance, increases with the size of the unanimous influence group but only up to a certain threshold: a group of 3 to 5 people is more influential than just one individual or a pair.