Understand the idea
Asch's line-judgment experiments examined public answers made in the presence of a unanimous group giving wrong judgments. The results showed social influence, while variations highlighted that unanimity and support matter. The lesson is not that everyone always abandons perception: distinguish following a group publicly, privately changing belief, and treating others as useful information. [S25]
Worked example
A fictional project team publicly supports an implausible forecast. Before giving your answer, write a private estimate and its evidence. Compare how an anonymous vote, a public vote, and one openly dissenting teammate might change the discussion. This is a teaching scenario, not a replication study.
Where the idea stops
A historical laboratory study cannot supply a universal conformity percentage for every culture or workplace. Influence can also be rational when other people hold relevant evidence. [S25]
Connect it
Culture and society: norms, private disagreement, and public signals.
Go deeper
Why can identical public answers conceal different private beliefs?
Sources
Solomon E. Asch · Research reference · Date: 1955-11
Original account of conformity experiments, including the importance of unanimity.
Link checked 2026-10-17 · Original paper accessed through MIT course materials; historical study has sampling and setting limits.