Fiche de révision : Understanding Social Psychology Biases and Influence

📋 Course Outline

1. Attribution Theory
2. Fundamental Attribution Error
3. Self-Serving Bias
4. Bystander Effect
5. Diffusion of Responsibility
6. Altruism and Helping
7. Prejudice and Discrimination
8. In-Group Bias and Out-Group Homogeneity
9. Just-World Hypothesis
10. Implicit Bias and Stereotypes
11. Persuasion Techniques
12. Self-Perception and Barnum Effect

📖 1. Attribution Theory

🔑 Key Concepts & Definitions

Attribution: The cognitive process of explaining the causes of behavior, whether our own or others’ (see section 1). It involves assigning internal or external causes to observed actions.

Fundamental Attribution Error: The tendency to overemphasize personality or dispositional factors and underestimate situational influences when explaining others’ behavior (Ross (1977)). For example, assuming someone is rude for cutting in line without considering external factors like urgency.

Self-Serving Bias: The tendency to attribute personal successes to internal factors (like ability) and failures to external factors (like luck or task difficulty) (see section 2). For example, claiming credit for a promotion but blaming a poor performance on unfair evaluation.

Correspondent Inference Theory: The idea that people infer that a person's behavior corresponds to their personality traits, especially when the behavior is freely chosen, unusual, or has a high degree of personal effort (not explicitly in source but relevant to attribution).

Covariation Model: Proposed by Kelley (1967), it suggests that people attribute behavior to factors that are present when the behavior occurs and absent when it does not, considering consensus, consistency, and distinctiveness.

📝 Essential Points

• Attribution helps us understand and predict behavior, but cognitive biases can distort these judgments.
• The Fundamental Attribution Error is more common in Western cultures; collectivist cultures tend to consider situational factors more.
• Self-Serving Bias maintains self-esteem by protecting self-image, influencing how we interpret successes and failures.
• The Covariation Model emphasizes that attributions depend on multiple cues: consensus (do others behave similarly?), consistency (does the person behave this way repeatedly?), and distinctiveness (is the behavior specific to this situation?).
• Authors/Theorists: Ross (1977), Kelley (1967).

💡 Key Takeaway

Attribution Theory explains how individuals interpret behavior, but cognitive biases like the fundamental attribution error and self-serving bias can lead to inaccurate judgments about others' motives and causes. Understanding these biases helps in developing more accurate social perceptions.

📖 2. Fundamental Attribution Error

🔑 Key Concepts & Definitions

Fundamental Attribution Error: The tendency to overemphasize personality traits and underestimate situational influences when explaining others’ behaviour. (Ross, 1977) highlighted that people often attribute actions to internal dispositions rather than external circumstances.

Correspondence Bias: A related concept where observers assume behaviour corresponds directly to personality, ignoring situational factors. (Jones & Davis, 1965) introduced this term to describe the same phenomenon.

Actor-Observer Bias: The tendency for individuals to attribute their own actions to external factors but others’ actions to internal traits, illustrating a variation of the fundamental attribution error. (Jones & Nisbett, 1972) explained this bias.

📝 Essential Points

• The fundamental attribution error is more prominent in Western individualistic cultures, where personal responsibility is emphasized (Ross, 1977).
• It often occurs because situational factors are less salient or less readily observed than personality traits.
• This bias can lead to misunderstandings and unfair judgments about others’ behaviour.
• The error is less common when people have more information about the context or when they are motivated to consider situational influences.
• Recognizing this bias is crucial in social psychology to understand misattributions and improve interpersonal understanding.

💡 Key Takeaway

The fundamental attribution error causes people to attribute others’ behaviour primarily to their personality, often neglecting the influence of external circumstances, which can lead to biased judgments and social misunderstandings.

📖 3. Self-Serving Bias

🔑 Key Concepts & Definitions

Self-Serving Bias: The tendency to attribute positive outcomes to internal factors (e.g., ability, effort) and negative outcomes to external factors (e.g., luck, task difficulty), thereby protecting self-esteem (Miller & Ross, 1975).

Example:
A student attributes a successful exam grade to their intelligence but blames a poor grade on unfair questions.

Self-Enhancement: A related concept where individuals seek to maintain or enhance their self-image through biased attributions (Sedikides & Gregg, 2008).

Attributional Style: The habitual way individuals explain events, which can be biased towards self-serving attributions (Peterson & Seligman, 1984).

📝 Essential Points

• Mechanism: Self-serving bias helps preserve self-esteem by framing successes as internal and failures as external (Miller & Ross, 1975).
• Cultural Variations: More prevalent in individualistic cultures that emphasize personal achievement (Heine et al., 1999).
• Impact on Self-Perception: Reinforces positive self-view but can hinder accurate self-assessment and learning from mistakes.
• Related Biases: Often linked with self-enhancement and self-protection strategies.
• Research Evidence: Studies show people consistently demonstrate self-serving attributions across various contexts, including academic, athletic, and social situations.
• Limitations: Not all individuals exhibit strong self-serving biases; some may display self-critical or modest attribution styles (Taylor & Brown, 1988).

💡 Key Takeaway

Self-serving bias is a psychological tendency that helps individuals maintain a positive self-image by attributing successes internally and failures externally, though it can distort self-awareness and hinder personal growth.

📖 4. Bystander Effect

🔑 Key Concepts & Definitions

Bystander Effect: The phenomenon where individuals are less likely to help a person in need when others are present, due to diffusion of responsibility (Darley & Latané, 1968).

Diffusion of Responsibility: The tendency for responsibility to be shared among group members, leading each person to feel less personal obligation to act (Darley & Latané, 1968).

Pluralistic Ignorance: A situation where people interpret others' inaction as a sign that help is not needed, reinforcing the decision not to help (Latané & Darley, 1968).

📝 Essential Points

• The bystander effect was demonstrated in classic experiments by Darley and Latané (1968), where participants were less likely to help a victim when others were present.
• Responsibility diffusion occurs because individuals assume others will take action, reducing their own sense of obligation.
• The effect is stronger in larger groups due to increased diffusion of responsibility.
• Situational factors influencing the effect include ambiguity of the situation, perceived danger, and the presence of others.
• Understanding this effect is crucial in emergency situations, as it highlights the importance of individual responsibility and clear cues for action.

💡 Key Takeaway

The bystander effect explains why people often fail to help in emergencies when others are around, primarily due to diffusion of responsibility and pluralistic ignorance, emphasizing the need for clear intervention cues.

📖 5. Diffusion of Responsibility

🔑 Key Concepts & Definitions

Diffusion of Responsibility: The tendency for individuals to feel less personal responsibility to act when others are present, assuming someone else will intervene (see Darley & Latané, 1968). It explains why help often does not occur in group settings.

Bystander Effect: A specific manifestation of diffusion of responsibility where people are less likely to help in emergencies when others are present, due to the diffusion of responsibility (see Darley & Latané, 1968).

Pluralistic Ignorance: A situation where individuals misinterpret others’ inaction as a sign that help is not needed, reinforcing the diffusion effect (see Latané & Darley, 1968).

Responsibility Attribution: The process by which individuals assign responsibility for helping or not helping, which is diminished in group contexts due to diffusion (see Darley & Latané, 1968).

📝 Essential Points

• Mechanism: When multiple bystanders are present, each person assumes someone else will act, reducing their own sense of responsibility.
• Research Evidence: Darley & Latané (1968) conducted experiments where participants believed they were witnessing an emergency; fewer people helped as the number of bystanders increased.
• Factors Influencing Diffusion: Group size, ambiguity of the situation, and perceived competence affect the degree of diffusion.
• Related Concepts: Diffusion of responsibility is closely linked to the bystander effect and pluralistic ignorance.
• Implication: Understanding diffusion helps explain phenomena like low intervention rates in emergencies and highlights the importance of individual responsibility.

💡 Key Takeaway

Diffusion of responsibility reduces the likelihood of helping in group settings because individuals assume others will intervene, leading to decreased personal accountability and action.

📖 6. Altruism and Helping

🔑 Key Concepts & Definitions

Altruism: Helping others without expecting personal benefit; selfless concern for the well-being of others.
Example: Donating anonymously to charity.

Empathy-Altruism Hypothesis: Proposed by Davis (1983), this theory suggests that empathy for another person can lead to altruistic helping behavior, motivated by genuine concern rather than self-interest.

Kin Selection Theory: Developed by Hamilton (1964), it states that individuals are more likely to help relatives because it increases the likelihood of their shared genes being passed on.

Reciprocal Altruism: Coined by Trivers (1971), this concept explains helping behavior as a form of mutual exchange, where helping others increases the likelihood of receiving help in return, thus benefiting both parties over time.

Bystander Effect (see section 4): The phenomenon where people are less likely to help when others are present, due to diffusion of responsibility.

Cost-Reward Model: Explains helping as a decision-making process where individuals weigh the costs of helping against the rewards (e.g., social approval, relief from distress).

📝 Essential Points

• Altruism involves helping without expectation of reward, contrasting with egoistic motives.
• The Empathy-Altruism Hypothesis (Davis, 1983) emphasizes that empathy can override self-interest, leading to genuine altruistic acts.
• Kin selection (Hamilton, 1964) explains why people are more inclined to help close relatives to ensure the survival of shared genes.
• Reciprocal altruism (Trivers, 1971) supports helping as a mutual benefit strategy, especially in social groups.
• The Bystander Effect (see section 4) demonstrates that presence of others can inhibit helping due to diffusion of responsibility.
• The Cost-Reward Model suggests that helping depends on perceived costs (danger, effort) and rewards (social approval, relief).
• Situational factors, personality traits, and cultural norms influence helping behavior, with some individuals more predisposed to altruism.

💡 Key Takeaway

Altruism is a selfless form of helping driven by empathy and evolutionary factors, but situational and social dynamics, such as the presence of others, can inhibit or promote helping behavior.

📖 7. Prejudice and Discrimination

🔑 Key Concepts & Definitions

Prejudice: A negative attitude or belief toward a group, often based on stereotypes (see section 9 for stereotypes).
Example: Believing a group is lazy without evidence.

Discrimination: Behavioral action that treats people unfavorably because of their group membership.
Example: Refusing to hire someone based on race or gender.

In-Group Bias: Favoring members of your own group over others, leading to preferential treatment.
Example: Supporting your team even when they cheat.

Out-Group Homogeneity: The tendency to see members of other groups as all the same and less varied.
Example: Thinking “they all act the same” about a different ethnicity.

Just-World Hypothesis: The belief that people get what they deserve, often leading to blaming victims for their misfortune.
Example: Thinking someone is poor because they are lazy.

Implicit Bias: Unconscious stereotypes or attitudes that influence perceptions and actions without awareness.
Example: Automatically associating certain jobs with specific genders.

📝 Essential Points

• Prejudice involves attitudes; discrimination involves behaviors (see section 9 for stereotypes).
• In-group bias can reinforce prejudice and lead to favoritism, while out-group homogeneity fosters stereotyping.
• The just-world hypothesis often justifies prejudice by blaming victims, which can perpetuate discrimination.
• Implicit biases operate below conscious awareness, influencing discriminatory behaviors even in individuals who explicitly oppose prejudice.
• Prejudice and discrimination are linked but distinct; reducing prejudice does not automatically eliminate discriminatory actions.
• These concepts are crucial in understanding social inequalities and are often targeted in anti-prejudice interventions.

💡 Key Takeaway

Prejudice refers to negative attitudes toward groups, while discrimination involves acting on those attitudes; both are interconnected factors that sustain social inequalities and bias.

📖 8. In-Group Bias and Out-Group Homogeneity

🔑 Key Concepts & Definitions

In-Group Bias: The tendency to favor members of one's own group over those of other groups, often leading to preferential treatment and positive evaluations. (Tajfel & Turner, 1979)

Out-Group Homogeneity: The perception that members of other groups are more similar to each other than members of one's own group. This often results in stereotyping and reduced recognition of individual differences. (Park & Rothbart, 1982)

Social Identity Theory: Proposed by Tajfel & Turner (1979), it explains how individuals derive part of their self-esteem from their group memberships, which fosters in-group favoritism and can contribute to out-group discrimination.

Minimal Group Paradigm: An experimental method demonstrating that even arbitrary or meaningless group assignments can produce in-group bias, highlighting the innate nature of favoritism toward one's own group. (Tajfel et al., 1971)

📝 Essential Points

• In-Group Bias enhances self-esteem and group cohesion but can lead to prejudice and discrimination against out-groups.
• Out-Group Homogeneity contributes to stereotyping, as individuals tend to see out-group members as less diverse and more similar, reinforcing negative stereotypes.
• Social Identity Theory suggests that people are motivated to view their own group positively to maintain self-esteem, often at the expense of out-groups.
• Research (Tajfel et al., 1971) shows that even trivial group distinctions can lead to favoritism, indicating that in-group bias is a fundamental aspect of social cognition.
• These biases can perpetuate social inequalities and conflicts, especially when combined with stereotypes and prejudice.
• Recognizing these tendencies is crucial for understanding intergroup relations and developing interventions to reduce bias.

💡 Key Takeaway

In-group bias and out-group homogeneity are psychological tendencies rooted in social identity processes that promote favoritism toward one's own group while perceiving others as uniform, often fueling prejudice and social division.

📖 9. Just-World Hypothesis

🔑 Key Concepts & Definitions

Just-World Hypothesis: The belief that the world is inherently fair, and people get what they deserve. This cognitive bias leads individuals to rationalize injustices as deserved outcomes, maintaining a sense of order and predictability in life (Lerner & Miller, 1977).

Victim-Blaming: A specific application of the just-world belief where responsibility for a misfortune is attributed to the victim, implying they must have done something to deserve their suffering (Lerner & Miller, 1977).

Moral Justice: The perception that moral actions are ultimately rewarded and immoral actions are punished, reinforcing the just-world belief (Lerner & Miller, 1977).

📝 Essential Points

• The just-world hypothesis fosters victim-blaming attitudes, which can hinder empathy and support for victims of injustice or misfortune.
• It serves as a psychological defense mechanism to reduce feelings of helplessness or anxiety about randomness and chaos in life.
• This bias influences social judgments, such as blaming victims of crime, poverty, or illness, by suggesting they are responsible for their circumstances.
• Lerner & Miller (1977) demonstrated that people tend to justify suffering by believing victims "deserve" their fate, especially after witnessing or hearing about misfortunes.
• The hypothesis can perpetuate social inequalities by rationalizing systemic injustices as deserved or inevitable.

💡 Key Takeaway

The just-world hypothesis is a cognitive bias that leads individuals to believe that people get what they deserve, which can promote victim-blaming and justify social inequalities, often at the expense of empathy and understanding.

📖 10. Implicit Bias and Stereotypes

🔑 Key Concepts & Definitions

Implicit Bias: Unconscious attitudes or stereotypes that influence perceptions and actions without awareness (Greenwald & Banaji, 1995).
Example: Automatically associating certain jobs with specific genders.

Stereotype: A generalized belief or expectation about a group of people (Allport, 1954).
Example: Believing that all teenagers are rebellious.

Implicit Association Test (IAT): A psychological assessment measuring the strength of automatic associations between concepts in memory (Greenwald, McGhee & Schwartz, 1998).
Purpose: To reveal unconscious biases.

Implicit Bias Activation: The process by which implicit biases are automatically triggered in response to stimuli (Devine, 1989).
Impact: Can influence behavior even when individuals endorse egalitarian beliefs.

Stereotype Threat: The risk of confirming negative stereotypes about one's group, leading to decreased performance (Steele & Aronson, 1995).
Example: A woman performing poorly on a math test due to stereotype threat.

Microaggressions: Subtle, often unintentional, discriminatory comments or actions that convey bias (Sue et al., 2007).
Example: Asking an Asian-American where they "really" come from.

📝 Essential Points

• Implicit biases are automatic and operate outside conscious awareness, influencing judgments and behaviors (Greenwald & Banaji, 1995).
• Stereotypes are often reinforced through socialization and media, contributing to implicit biases.
• The IAT is a widely used tool to measure implicit biases, revealing biases that individuals may not openly endorse.
• Implicit bias activation can occur rapidly and influence decisions, such as hiring or law enforcement, often perpetuating discrimination.
• Stereotype threat can negatively affect performance and motivation, especially in marginalized groups (Steele & Aronson, 1995).
• Microaggressions serve as daily manifestations of implicit bias, cumulatively impacting mental health and social inclusion.
• Awareness of implicit bias does not necessarily eliminate it but can motivate efforts to reduce its influence (Devine, 1989).
• Strategies to mitigate implicit bias include counter-stereotype training, perspective-taking, and increasing intergroup contact.

💡 Key Takeaway

Implicit biases are unconscious attitudes that shape perceptions and actions, often reinforcing stereotypes and contributing to social inequalities; awareness and deliberate strategies are essential to reduce their impact.

📖 11. Persuasion Techniques

🔑 Key Concepts & Definitions

Foot-in-the-Door Technique: A compliance strategy where an individual first agrees to a small request, increasing the likelihood of agreeing to a subsequent larger request (Floyd & Boren, 1970).

Door-in-the-Face Technique: A compliance method involving making a large, unreasonable request that is likely to be refused, followed by a smaller, more reasonable request (Cialdini et al., 1975).

Reciprocity Norm: The social expectation that people will return favors or kindnesses, which persuasion techniques often leverage (Gouldner, 1960).

Authority Principle: The tendency to comply with requests from perceived authority figures, enhancing persuasive power (Milgram, 1963).

Scarcity Principle: The idea that opportunities or items become more attractive when they are limited or scarce, used to increase compliance (Cialdini, 2001).

Low-Ball Technique: Securing agreement with a request and then increasing the cost or changing terms after commitment, exploiting commitment and consistency (Cialdini et al., 1978).

📝 Essential Points

• Persuasion techniques manipulate psychological principles to influence behavior (Cialdini, 2001).
• The Foot-in-the-Door and Door-in-the-Face techniques are among the most effective compliance strategies, relying on consistency and reciprocity (Floyd & Boren, 1970; Cialdini et al., 1975).
• The Reciprocity Norm encourages repayment of favors, which persuasion tactics often exploit to increase compliance (Gouldner, 1960).
• The Authority Principle leverages social conditioning to follow directives from figures perceived as legitimate authorities (Milgram, 1963).
• The Scarcity Principle increases desirability by emphasizing limited availability, prompting quicker decisions (Cialdini, 2001).
• The Low-Ball Technique capitalizes on commitment; once individuals agree, they are more likely to follow through despite increased costs (Cialdini et al., 1978).

💡 Key Takeaway

Persuasion techniques utilize psychological principles like reciprocity, authority, scarcity, and commitment to effectively influence attitudes and behaviors, often by subtly exploiting social norms and cognitive biases.

📖 12. Self-Perception and Barnum Effect

🔑 Key Concepts & Definitions

Self-Perception Theory: People infer their own attitudes and emotions by observing their own behaviour, especially when internal cues are weak or ambiguous. (Daryl Bem, 1967)

Barnum Effect: The tendency for individuals to believe vague, general personality descriptions are highly accurate for themselves. This effect explains why horoscopes and astrology readings seem personally meaningful. (No specific author, but widely studied in psychology)

Vague Personality Descriptions: General statements that are broad enough to apply to many people, which can lead to the Barnum Effect when individuals interpret them as personally accurate.

📝 Essential Points

• Self-Perception Theory suggests that individuals gain insight into their own attitudes by observing their behaviour, especially in situations where internal cues are insufficient or unclear. For example, someone who volunteers frequently might conclude they care about helping others based on their actions (see Self-Perception Theory).

• The Barnum Effect explains why people accept and believe in vague personality descriptions—such as horoscopes or personality tests—that could apply to many individuals. This effect is exploited in pseudoscientific practices and can influence self-assessment.

• The Vague Personality Descriptions used in horoscopes or astrology are intentionally broad, making it easy for individuals to interpret them as accurately describing their unique personality.

• The Barnum Effect demonstrates cognitive biases where individuals overattribute accuracy to general statements, contributing to the perceived validity of personality assessments that lack scientific rigor.

• Understanding the Barnum Effect helps in evaluating personality tests and readings, recognizing that many may rely on vague, non-specific descriptions that are not scientifically validated.

💡 Key Takeaway

Self-perception allows individuals to understand their own attitudes through their behaviour, while the Barnum Effect explains why vague personality descriptions often seem accurate, highlighting the importance of critical evaluation of personality assessments.

📊 Synthesis Tables

⚠️ Common Pitfalls & Confusions

1. Confusing the Fundamental Attribution Error with Actor-Observer Bias—the former attributes others' behavior to personality, the latter attributes one's own behavior differently based on perspective.
2. Assuming Self-Serving Bias always leads to overconfidence; it can also cause underestimation of external factors in failures.
3. Misinterpreting Bystander Effect as a lack of empathy rather than diffusion of responsibility.
4. Overgeneralizing Attribution Theory without considering cultural differences influencing attribution styles.
5. Mistaking Implicit Bias for explicit prejudice—implicit biases are unconscious.
6. Confusing Persuasion Techniques (e.g., foot-in-the-door, door-in-the-face) with general influence; specific methods have specific effects.
7. Overlooking the role of pluralistic ignorance in the Bystander Effect.

✅ Exam Checklist

• Know Ross's (1977) definition of the Fundamental Attribution Error and how it influences social judgments.

• Understand Kelley's (1967) Covariation Model and its cues: consensus, consistency, and distinctiveness.

• Be able to explain Self-Serving Bias with examples and its cultural variations, referencing Miller & Ross (1975).

• Describe Darley & Latané's (1968) experiments on the Bystander Effect and Diffusion of Responsibility.

• Recognize Latané & Darley's (1968) concept of Pluralistic Ignorance in emergency situations.

• Know Jones & Davis (1965)'s Correspondence Bias and its relation to the Fundamental Attribution Error.

• Understand Actor-Observer Bias as a variation of attribution bias, explained by Jones & Nisbett (1972).

• Master Persuasion Techniques such as foot-in-the-door and door-in-the-face and their psychological mechanisms.

• Be familiar with implicit bias and stereotypes, including their unconscious nature.

• Know Miller & Ross (1975)'s explanation of Self-Serving Bias and its role in self-esteem maintenance.

• Understand Altruism and Helping behaviors, including factors that promote or inhibit helping.

• Be able to differentiate Prejudice and Discrimination, with examples.

• Know In-Group Bias and Out-Group Homogeneity effects and their social implications.

• Understand the Just-World Hypothesis and its influence on victim-blaming.

• Recall Barnum Effect in relation to Self-Perception and how vague feedback influences self-assessment.

• Master vocabulary related to social biases, attribution, and influence techniques.

• Last item: Review all key authors and their core concepts, especially Ross, Kelley, Darley & Latané, Miller & Ross, Jones & Davis, and Jones & Nisbett.