(AO3) Give a limitation of Asch + challenge
Point: Ethical guidelines
Evidence: Deception and protection from harm. Deliberately deceived his ppts, saying they were taking part in vision test. In addition, many reported feeling stressed when they disagreed with majority.
Evaluate: However, Asch interviewed all ppts after to overcome this issue
Challenge: Deception required in order to achieve valid results. If ppt knew true aim = demand characteristics / acted differently.