In Asch's line-judgment experiments, participants who gave the wrong answer in the presence of unanimous confederates were primarily demonstrating:
APerceptual distortion — the presence of others caused them to literally see the lines differently
BInformational influence — they reasoned that the group must have information they were missing
CNormative influence — the social cost of publicly disagreeing with a unanimous group outweighed the benefit of being right
DLow intelligence — smarter participants were able to resist the pressure
The key detail in Asch's design is that the correct answer was unambiguous — error rates in control groups were under 1%. Participants who conformed were not confused about the right answer; they experienced normative pressure: the discomfort of publicly contradicting a unanimous group was enough to override clear perceptual information. Many reported privately knowing the group was wrong but conforming anyway. This rules out both perceptual distortion and informational influence as the primary mechanism.
Question 2 Multiple Choice
An investor hears that all her colleagues are buying a particular stock and decides to buy it too, reasoning 'they probably know something I don't.' This is best described as:
ANormative conformity, because she wants social approval from colleagues
BInformational conformity, because she is treating the group's behavior as evidence about the stock's prospects
CGroupthink, because the group may be making a collective error
DDeindividuation, because she is losing her sense of individual identity in the crowd
Informational influence operates when you defer to the group because you believe they possess knowledge you lack. This investor is genuinely updating her beliefs about the stock based on others' behavior — using consensus as evidence. This can be rational (if her colleagues really do have better information) or irrational (if they're all following each other). Normative conformity would involve buying the stock to be liked or fit in, regardless of her beliefs about its value. Groupthink and deindividuation are distinct phenomena.
Question 3 True / False
According to Asch's research, if even one confederate gives the correct answer instead of the group's wrong answer, conformity rates among naive participants remain largely unchanged because the majority is still overwhelming.
TTrue
FFalse
Answer: False
The opposite is true and is one of Asch's most important findings. A single dissenter dramatically reduced conformity rates. One person publicly giving the correct answer effectively 'legitimized' the naive participant's private doubt, making it socially permissible to disagree with the majority. This has profound practical implications: minority voices — even lone dissenters — have disproportionate power to break the appearance of unanimity and free others to express private disagreement.
Question 4 True / False
Informational conformity, unlike normative conformity, typically involves genuine belief change rather than public compliance masking private disagreement.
TTrue
FFalse
Answer: True
Because informational conformity occurs when you treat others as having relevant knowledge, you actually update your beliefs — not just your expressed behavior. Normative conformity, by contrast, often involves saying or doing what the group expects while privately maintaining your original view. This distinction has predictive power: normative conformity may dissolve the moment social pressure is removed, while informational conformity tends to persist because it produced real belief change.
Question 5 Short Answer
Why is changing a social norm often more effective at altering individual behavior than appealing to people to think independently?
Think about your answer, then reveal below.
Model answer: Conformity is a response to situational forces — specifically, to the perceived social cost of deviation — not primarily a character flaw. Appealing to individuals to 'think independently' leaves the social pressure intact and expects each person to individually overcome it. Changing the norm changes the force itself: when people believe others already hold a different view, or when a dissenter makes private disagreement publicly permissible, the social cost of deviation drops and behavior shifts at scale without requiring each individual to resist alone.
This follows directly from the situational analysis of conformity: Asch's participants were not unusually weak-willed people who just needed encouragement. They were responding to real social incentives. The implication for behavior change — in public health, organizational culture, or politics — is that making existing dissent visible (showing people others already disagree) is often more effective than individual persuasion, because it targets the situational force rather than trying to overcome it one person at a time.