What is the difference between Normative Social Influence (NSI) and Informational Social Influence (ISI)?

NSI is the desire to be liked and fit in with a group, usually occurring in unambiguous tasks. ISI is the desire to be right, occurring when a task is difficult or ambiguous and we look to others for the correct answer.

How does the effect of a dissenter giving the *correct* answer compare to a dissenter giving a *different incorrect* answer?

Both significantly reduce conformity. A correct dissenter dropped conformity to $5\%$, while a dissenter giving a different wrong answer dropped it to $9\%$, proving that disrupting unanimity is the key factor, not just providing the right answer.

When comparing group sizes of 3 vs. 15 confederates, what happens to the conformity rate?

The conformity rate remains largely the same. Asch found that conformity peaks at a group size of 3 (around $31.8\%$) and plateaus, meaning additional confederates beyond this point do not significantly increase pressure.

What is a common misconception regarding the 'inevitability' of conformity in Asch's study?

Many assume most people conformed every time, but in reality, $25\%$ of participants never conformed at all. This shows that while group pressure is strong, it is not an inevitable force that controls everyone.

Why is it an error to say that conformity increases linearly with every additional group member?

Because Asch's research showed a plateau effect. While conformity jumps significantly as the group grows from 1 to 3 members, the influence of 4, 8, or 10 members is statistically similar to the influence of 3.

What error in 'Temporal Validity' is often associated with Asch's 1951 study?

Critics argue the results were a 'child of its time,' reflecting the highly conformist social climate of the 1950s USA. Modern replications often find lower rates, suggesting the findings may not apply to all historical periods.

Define 'Unanimity' in the context of social influence.

Unanimity is the state of total agreement among all members of a group. In Asch's study, when the group was unanimous, conformity was high; when unanimity was broken by a dissenter, conformity collapsed.

What is a 'Confederate' in psychological research?

A confederate is an individual who is part of the research team and follows a predetermined script, but is presented to the true participant as another volunteer or peer.

What does 'Mundane Realism' refer to in the evaluation of Asch's study?

It refers to how closely the experimental task mirrors real-life situations. Asch's line task is criticized for low mundane realism because judging line lengths is trivial and lacks the consequences of real-world social conformity.

Why does increasing task difficulty lead to higher conformity?

Increased difficulty makes the situation ambiguous, leading to Informational Social Influence. Participants become less confident in their own perception and rely on the group as a source of truth to avoid being wrong.

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Asch & Variables Affecting Conformity

Summary

Solomon Asch's research provides a foundational understanding of how individuals yield to group pressure, even when the group is clearly incorrect. By manipulating specific variables such as group size, unanimity, and task difficulty, Asch identified the boundary conditions of conformity and distinguished between the social motivations of wanting to be liked versus wanting to be right.

1. Definition & Core Concepts

Conformity is defined as a change in a person's behavior or opinions as a result of real or imagined pressure from a person or group of people.
The Asch Paradigm involves a 'naive' participant placed in a group of confederates (individuals working for the researcher) to perform a simple perceptual task.
In the baseline study, participants were asked to match a 'standard line' to one of three 'comparison lines' where the correct answer was obvious and unambiguous.
Asch found that on average, participants conformed on $36.8\%$ of the critical trials, and $75\%$ of participants conformed at least once, demonstrating the power of majority influence.

2. Variable 1: Group Size

Asch investigated whether the size of the majority influenced the likelihood of an individual conforming to an incorrect answer.
With only one confederate, conformity was very low (approximately $3\%$ ), and with two confederates, it rose to $12.8\%$ .
Conformity peaked at approximately $31.8\%$ with three confederates, after which adding more people to the majority had little additional effect on conformity rates.
This suggests that a small majority is sufficient to exert significant social pressure, but the influence of the group does not increase infinitely with its size.

Graph showing the relationship between group size and conformity rate, illustrating a sharp rise until 3 confederates followed by a plateau.

3. Variable 2: Unanimity

4. Variable 3: Task Difficulty

5. Key Distinctions: NSI vs. ISI

6. Exam Strategy & Tips