Social psychology

In short

Social psychology is the scientific study of how individuals' thoughts, feelings and behaviour are influenced by the actual, imagined or implied presence of others (Gordon Allport, 1954). It explains attitudes, attributions, conformity, obedience, group processes, prejudice, aggression and helping, using experiments, surveys and field studies. In Indian BA/B.Sc psychology it is a core CBCS paper, examined heavily in UGC-NET Psychology (Unit on Social Psychology), CUET-PG and state PSC psychology papers. It is applied in HR and OB roles, market research, advertising, CSR and behaviour-change programmes, counselling and police/NGO training, and underpins "nudge" work in Indian public policy.

Explained

Nature, scope and methods

• Definition: study of social thinking (how we perceive ourselves and others), social influence (culture, conformity, persuasion) and social relations (prejudice, aggression, attraction, helping).
• Levels of explanation: intra-personal, inter-personal, group/intergroup, and societal-cultural; social psychology sits between psychology and sociology (the latter studies groups and institutions as units).
• Methods: laboratory experiment (high control, low ecological validity), field experiment, quasi-experiment, correlational survey, observation, case study, cross-cultural comparison.
• Key method terms: independent and dependent variable, random assignment, demand characteristics, experimenter bias, mundane vs experimental realism, deception plus debriefing, operational definition, replication crisis.
• Ethics in India: informed consent, confidentiality, right to withdraw, minimal risk, debriefing — governed by Institutional Ethics Committees under the ICMR National Ethical Guidelines for Biomedical and Health Research Involving Human Participants (2017) and the Rehabilitation Council of India code for practitioners; the Mental Healthcare Act, 2017 sets consent and confidentiality standards for clinical work.
• Indian social psychology: Durganand Sinha (poverty and deprivation), J.B.P. Sinha (nurturant-task leadership, NT model), Rabindra N. Kanungo (work values and work alienation), Girishwar Misra and Ajit Mohanty (indigenisation), Mrinal Miri and Ashis Nandy (identity, colonial self). Themes: collectivism, hierarchy/respect for authority, *jajmani* reciprocity, caste and communal relations, joint-family socialisation.

Social cognition, self and attribution

• Social cognition: how we select, interpret and remember social information. Schemas (person, role, event = *scripts*) speed processing but bias it.
• Heuristics: availability (judge frequency by ease of recall), representativeness (match to prototype), anchoring and adjustment, affect heuristic; cause base-rate neglect and the conjunction fallacy.
• Biases: confirmation bias, hindsight bias ("I knew it all along"), false consensus, illusory correlation, counterfactual thinking, priming, negativity bias, self-fulfilling prophecy (Rosenthal–Jacobson *Pygmalion in the classroom*).
• Self: self-concept, self-schema, possible selves; self-esteem; self-efficacy (Bandura); self-monitoring (Snyder); self-serving bias (credit success internally, blame failure externally); self-handicapping; spotlight effect; impression management and self-presentation (Goffman).
• Independent vs interdependent self-construal (Markus and Kitayama): Western samples show independent selves; Indian samples lean interdependent — self defined by relationships, duty (*dharma*) and family role.
• Attribution theory: explaining causes of behaviour.
  • Heider: naive psychology, personal vs situational causes.
  • Jones and Davis — correspondent inference: we infer dispositions from freely chosen, low social-desirability acts with non-common effects.
  • Kelley's covariation model: uses consensus (do others behave so?), consistency (always?), distinctiveness (only to this target?). High consensus + high consistency + high distinctiveness → stimulus/external attribution; low consensus + high consistency + low distinctiveness → person/internal attribution; low consistency → circumstance attribution.
  • Kelley's configuration principles: discounting, augmentation, and the causal schemata (multiple sufficient/necessary causes).
  • Weiner's attribution model of achievement: locus (internal/external) × stability (stable/unstable) × controllability — e.g. ability (internal-stable-uncontrollable), effort (internal-unstable-controllable), task difficulty, luck. Drives pride, shame, and expectancy of future success.
• Attributional errors: fundamental attribution error / correspondence bias (over-weighting disposition in others); actor–observer difference; self-serving bias; just-world belief (victim blaming); group-serving bias; ultimate attribution error (dispositional blame for outgroup failures). FAE is weaker in collectivist Indian samples, which cite context, family and situation more readily (Miller, 1984, India–US comparison).

Attitudes, dissonance and persuasion

• Attitude: a learned, evaluative disposition toward an object. Tripartite (ABC) model — Affect, Behaviour (conation), Cognition.
• Functions (Katz): knowledge, utilitarian (adjustive), ego-defensive, value-expressive.
• Formation: classical and operant conditioning, mere exposure (Zajonc), observational learning, socialisation (family, caste/community, school, media), social comparison (Festinger).
• Measurement: Thurstone equal-appearing intervals, Likert summated rating (usually 5- or 7-point), Guttman cumulative scale, Bogardus social distance scale, semantic differential (Osgood), sociometry (Moreno), plus implicit measures (IAT, bogus pipeline).
• Attitude–behaviour gap (LaPiere, 1934): attitudes predict behaviour better when specific, strong, accessible, personally relevant, and when social norms permit.
• Theory of Planned Behaviour (Ajzen): behaviour ← intention ← attitude + subjective norm + perceived behavioural control.
• Cognitive dissonance (Festinger, 1957): inconsistent cognitions create discomfort, reduced by changing the attitude, changing the behaviour, adding consonant cognitions, or trivialising. Classic: Festinger and Carlsmith (1959) — $1 participants changed attitudes more than $20 participants (insufficient justification); also effort justification and post-decision dissonance.
• Rival theories: self-perception (Bem — we infer attitudes from behaviour), self-affirmation (Steele), balance theory (Heider's P-O-X triads), congruity theory (Osgood and Tannenbaum), reactance (Brehm).
• Persuasion: Yale model — source (credibility, expertise, trustworthiness, attractiveness), message (one- vs two-sided, fear appeals with efficacy information, repetition), channel, audience (age, involvement, need for cognition).
• Elaboration Likelihood Model (Petty and Cacioppo): central route (high motivation + ability, argument quality, durable change) vs peripheral route (cues like source attractiveness, number of arguments, mood; fragile change). Chaiken's Heuristic-Systematic Model is the parallel account.
• Compliance techniques: foot-in-the-door, door-in-the-face, low-balling, that's-not-all, scarcity, reciprocity; inoculation and forewarning resist persuasion.

Social influence: conformity, compliance, obedience

• Norms, roles, status; descriptive vs injunctive norms.
• Sherif (1935) autokinetic effect: ambiguous stimulus → convergence of group norms; informational social influence (desire to be right), internalised.
• Asch (1951) line-judgement: ~37% of critical trials showed conformity, about 75% conformed at least once; normative social influence (desire to be liked), public compliance. Conformity falls sharply with one dissenting ally, with private responses, with small groups (rises up to 3–5 members), and with high task certainty.
• Kelman's three levels: compliance, identification, internalisation.
• Milgram (1963) obedience: 65% of participants went to the maximum 450 V shock; obedience fell with closer victim proximity, absent/remote authority, non-prestigious setting, and disobedient peers. Explained by agentic state, gradual commitment, legitimacy of authority, and engaged followership (newer reading).
• Zimbardo's Stanford Prison Experiment (1971): deindividuation and role internalisation — now heavily criticised for demand characteristics and coaching of guards; cite with that caveat.
• Minority influence (Moscovici): a consistent, confident, flexible minority produces conversion (deep, delayed, private change); the majority produces compliance.
• Deindividuation: anonymity + arousal + diffused responsibility → reduced self-awareness and weakened norm restraint (relevant to mob lynching and crowd violence; Indian police training cites it).
• Power and authority: French and Raven's bases — reward, coercive, legitimate, referent, expert, informational.

Group processes, leadership and intergroup relations

• Group: two or more interdependent persons with shared identity and norms. Tuckman's stages: forming, storming, norming, performing, adjourning. Cohesiveness, roles, status, norms, entitativity.
• Social facilitation (Zajonc's drive theory): presence of others improves simple/well-learned tasks and impairs complex/novel tasks; alternatives — evaluation apprehension (Cottrell), distraction-conflict.
• Social loafing (Latané, Ringelmann effect): effort falls per person when individual contributions are pooled and unidentifiable; reduced by identifiability, task meaning, smaller groups, individual standards. Free-rider and sucker effect.
• Group decision-making: group polarisation (discussion exaggerates the initially favoured view; risky shift and cautious shift); groupthink (Janis — cohesive, insulated, directive-led groups show illusion of invulnerability, self-censorship, mindguards, illusion of unanimity; remedies: devil's advocate, impartial leader, outside experts, second-chance meeting); process loss, common-knowledge effect, hidden profile.
• Social dilemmas: prisoner's dilemma, tragedy of the commons (groundwater depletion in Punjab/Telangana is a textbook Indian case); resolved by regulation, communication, small groups, reciprocity, superordinate goals.
• Leadership: trait → behavioural (autocratic/democratic/laissez-faire — Lewin, Lippitt and White; initiating structure vs consideration) → contingency (Fiedler's LPC contingency model, path-goal, situational leadership) → transformational/transactional (Bass); LMX. Indian contribution: J.B.P. Sinha's nurturant-task (NT) leader — task-demanding but personally caring, effective in hierarchical, dependence-prone Indian work settings.
• Prejudice, stereotype, discrimination: attitude (affect) / belief (cognition) / behaviour (conation) respectively.
  • Causes: realistic conflict theory (Sherif's Robbers Cave — competition breeds hostility, superordinate goals reduce it), social identity theory (Tajfel and Turner — categorisation, identification, comparison → ingroup favouritism, even in minimal groups), self-categorisation, authoritarian personality (Adorno's F-scale), scapegoat/frustration-aggression, social learning, system justification, relative deprivation.
  • Effects: stereotype threat (Steele and Aronson; replicated in India by Hoff and Pandey on caste and puzzle performance), stigma, tokenism, illusory correlation, outgroup homogeneity.
  • Reduction: contact hypothesis (Allport's four conditions — equal status, common goals, intergroup cooperation, institutional support), jigsaw classroom (Aronson), recategorisation and common ingroup identity, cross-group friendship, education and media.
  • Indian context: caste, religion, region, language, gender and disability prejudice; constitutional and statutory responses — Articles 14, 15, 16, 17 (abolition of untouchability), SC/ST (Prevention of Atrocities) Act, 1989 (amended 2015/2018), Rights of Persons with Disabilities Act, 2016, Transgender Persons (Protection of Rights) Act, 2019, Sexual Harassment of Women at Workplace (POSH) Act, 2013, and reservation policy as a structural remedy.

Aggression, prosocial behaviour and interpersonal relations

• Aggression: behaviour intended to harm. Hostile (reactive, angry) vs instrumental (proactive, goal-directed); direct vs relational.
• Theories: instinct (Freud's thanatos, Lorenz), frustration-aggression (Dollard and Miller; Berkowitz's cognitive-neoassociationist revision — aversive cues plus negative affect), social learning (Bandura's Bobo doll), excitation transfer, General Aggression Model, weapons effect; biological correlates (amygdala, low serotonin, testosterone), situational factors (heat, crowding, alcohol, pain, media violence).
• Control: catharsis is largely unsupported; effective methods are punishment that is prompt and certain, incompatible responses, non-aggressive models, empathy training, cognitive reappraisal, apology.
• Prosocial behaviour and altruism: helping; altruism = helping without expected benefit.
  • Bystander effect (Darley and Latané, after the Kitty Genovese case, 1964): diffusion of responsibility, pluralistic ignorance, evaluation apprehension. Five-step decision model: notice → interpret as emergency → assume responsibility → know how to help → decide to help.
  • Motives: empathy-altruism hypothesis (Batson), negative state relief, arousal-cost-reward, social exchange, reciprocity norm, social responsibility norm, kin selection.
  • Influences: similarity, mood (feel-good do-good), time pressure (Darley and Batson's Good Samaritan study), urban vs rural, modelling.
  • India: the Good Samaritan guidelines (Supreme Court, 2016) and the Motor Vehicles (Amendment) Act, 2019 — Section 134A protect bystanders who help road-accident victims from legal harassment, addressing a documented reluctance to help.
• Interpersonal attraction: proximity and mere exposure, physical attractiveness (and the matching hypothesis), similarity, reciprocal liking, complementarity; social exchange, equity, investment model (Rusbult). Sternberg's triangular theory (intimacy, passion, commitment) and attachment styles in adult relationships. Indian relevance: arranged-marriage research shows companionate love developing post-marriage; family approval functions as a major relationship-investment variable.

Key points

• Social psychology - scientific study of how real or imagined presence of others shapes thought, feeling and behaviour (Allport).
• Attribution - inferring causes; Kelley uses consensus, consistency and distinctiveness; Weiner uses locus, stability and controllability.
• Fundamental attribution error - over-attributing others' behaviour to disposition and ignoring situation; weaker in collectivist samples.
• Self-serving bias - internal credit for success, external blame for failure, protecting self-esteem.
• Attitude (ABC) - affect, behaviour, cognition; measured by Thurstone, Likert, Guttman, Bogardus and semantic differential scales.
• Cognitive dissonance - discomfort from inconsistent cognitions; smaller incentives produce larger attitude change (insufficient justification).
• ELM - central route persuades through argument quality and lasts; peripheral route uses cues and fades.
• Informational vs normative influence - conform to be right (Sherif) vs to be liked (Asch).
• Asch result - about 37% conformity on critical trials; one ally cuts it drastically.
• Milgram result - 65% reached 450 V; obedience explained by agentic state and legitimate authority.
• Minority influence - consistency and flexibility convert the majority privately and durably (Moscovici).
• Social facilitation vs loafing - others' presence helps simple tasks; pooled unidentifiable effort reduces individual input (Ringelmann).
• Groupthink - cohesion plus insulation plus directive leadership yields poor decisions; counter with devil's advocacy and outside review.
• Group polarisation - discussion among like-minded members strengthens the initial leaning.
• Social identity theory - mere categorisation into ingroup/outgroup produces favouritism and comparison-based self-esteem (Tajfel).
• Contact hypothesis - prejudice falls when contact has equal status, common goals, cooperation and institutional support.
• Bystander effect - more witnesses, less help, via diffusion of responsibility and pluralistic ignorance.
• Nurturant-task leadership - J.B.P. Sinha's Indian model: high task demand with personal care and nurturance.
• Aggression - hostile vs instrumental; social learning and GAM explain it better than catharsis, which lacks support.

Formulas and examples

Example 1 — Scoring an attitude scale. A 5-item, 5-point Likert prejudice scale. A respondent answers 4, 5, 2, 4, 5. Item 3 is reverse-worded.

• Recode item 3: (5 + 1) − 2 = 4.
• Total = 4 + 5 + 4 + 4 + 5 = 22 out of a 5–25 range.
• Mean item score = 22 ÷ 5 = 4.4, i.e. well above the scale midpoint of 3 → a strongly favourable attitude toward the statements.

Example 2 — Conformity rate, Asch-type replication in an Indian college. 30 students, 18 critical trials each → 540 critical trials. Conforming responses recorded = 189. In the "one ally present" condition the same students gave 54 conforming responses out of 540.

• Baseline conformity = 189 ÷ 540 = 35.0%.
• With an ally = 54 ÷ 540 = 10.0%.
• Reduction = 35.0 − 10.0 = 25 percentage points, a relative drop of 25 ÷ 35 = 71.4% — matching Asch's finding that a single dissenter breaks unanimity's power.

Example 3 — Ringelmann effect and social loafing. One student pulling a rope averages 60 kg of force. Groups of 2, 4 and 8 give 114 kg, 196 kg and 312 kg.

• At n = 8, process loss = 480 − 312 = 168 kg (35%); per-person output fell from 60 to 39 kg, a 35% drop — coordination loss plus motivation loss (loafing).

Example 4 — Kelley's covariation model applied. "Ravi complains about the canteen food."

• Case A: most students also complain (high consensus), Ravi complains every day (high consistency), he does not complain about the library or hostel (high distinctiveness) → attribute to the stimulus: the food really is bad.
• Case B: nobody else complains (low consensus), he always complains (high consistency), he complains about everything (low distinctiveness) → attribute to the person: Ravi is a complainer.
• Case C: nobody else complains (low consensus), he complained only today (low consistency) → attribute to the circumstance: perhaps he was unwell or the batch was spoilt.

Example 5 — Effect size in a dissonance experiment. Group A (paid ₹50 to say a dull task was interesting) rates enjoyment M₁ = 6.2, s₁ = 1.4, n₁ = 25. Group B (paid ₹1,000) rates M₂ = 4.6, s₂ = 1.6, n₂ = 25.

• s_pooled = √[((24 × 1.96) + (24 × 2.56)) ÷ 48] = √[(47.04 + 61.44) ÷ 48] = √(108.48 ÷ 48) = √2.26 = 1.503.
• d = (6.2 − 4.6) ÷ 1.503 = 1.6 ÷ 1.503 = 1.06 — a large effect, supporting insufficient justification: the small payment left the dissonance unexplained, so the attitude shifted.

Where it is used

• HR and organisational behaviour: selection interviews (halo and FAE control, structured interviews), performance appraisal bias, team design, change management, POSH committee training — Infosys, TCS, HUL, ITC, Tata Steel; relevant for MBA-HR and OB placement rounds.
• Advertising, market research and consumer insight: Ipsos, Nielsen, Kantar, GroupM — source credibility, ELM, scarcity and reciprocity cues, brand attitude tracking using Likert and semantic-differential scales.
• Public policy and behavioural nudges: sanitation and handwashing (Swachh Bharat), immunisation uptake, LPG subsidy *Give-It-Up*, road safety messaging, savings and digital payment adoption — descriptive-norm framing and default effects; behavioural units in NITI Aayog and state governments, and BIT/World Bank projects in India.
• Development, NGO and CSR work: gender-attitude and caste-prejudice reduction, intergroup contact programmes, community mobilisation (SEWA, Pratham, PRADAN), anti-stigma campaigns in mental health and HIV.
• Law enforcement, disaster and crowd management: crowd behaviour and deindividuation in melas and festivals, rumour and mob-violence control, eyewitness testimony reliability, police behavioural training at academies like SVP NPA Hyderabad.
• Clinical, counselling and school psychology: social skills training, bullying intervention, stereotype-threat-aware teaching, group therapy dynamics; RCI-registered counsellors and school counsellors.

Interview questions

• Q: Define social psychology and distinguish it from sociology. A: Social psychology studies how the actual or imagined presence of others influences the individual's thought, feeling and behaviour; sociology studies groups, institutions and social structures as its unit of analysis.
• Q: What is the fundamental attribution error, and is it universal? A: It is over-attributing another's behaviour to personality while discounting the situation; it is weaker in collectivist cultures — Indian respondents cite context and relationships far more than American respondents (Miller, 1984).
• Q: How do informational and normative influence differ? A: Informational influence is conforming because we believe others are right (Sherif's ambiguous task, leading to private internalisation); normative influence is conforming to be accepted (Asch's unambiguous task, producing public compliance).
• Q: Why did less-paid participants change their attitude more in Festinger and Carlsmith's study? A: ₹-equivalent small payment is insufficient justification for lying, leaving dissonance that can only be reduced by genuinely believing the task was interesting; a large payment fully explains the behaviour.
• Q: What are the three components of an attitude, and why do attitudes often fail to predict behaviour? A: Affect, behaviour and cognition. Prediction is weak when attitudes are general, weak or inaccessible, or when norms, habits and situational constraints override them — which is why the Theory of Planned Behaviour adds subjective norm and perceived control.
• Q: How would you reduce prejudice in a workplace or classroom? A: Use Allport's contact conditions — equal status, common goals, cooperative interdependence and institutional support — operationalised as mixed cooperative teams (jigsaw method), a common superordinate identity, and visible leadership backing.
• Q: Differentiate group polarisation from groupthink. A: Polarisation makes an existing group leaning more extreme after discussion; groupthink is a defective decision process in cohesive, insulated groups under a directive leader that suppresses dissent.
• Q: What explains the bystander effect and how can it be countered? A: Diffusion of responsibility, pluralistic ignorance and evaluation apprehension; counter by naming a specific person, stating the emergency clearly, and legal protection — India's 2016 Good Samaritan guidelines and Section 134A of the Motor Vehicles Act do exactly this.
• Q: Is catharsis an effective way to control aggression? A: No; evidence shows venting usually maintains or increases aggression. Effective routes are incompatible responses, empathy, reappraisal, non-aggressive models and certain, prompt sanctions.
• Q: How does Kelley's covariation model decide between internal and external attribution? A: High consensus, high consistency and high distinctiveness point to the stimulus (external); low consensus, high consistency and low distinctiveness point to the person (internal); low consistency points to the circumstance.
• Q: What is the nurturant-task model, and why is it cited for Indian organisations? A: J.B.P. Sinha's model of a leader who sets high task demands while showing personal care and nurturance; it suits hierarchical, relationship-oriented Indian work cultures better than purely participative styles.
• Q: Why is the Stanford Prison Experiment treated cautiously now? A: Archival evidence shows guards were coached, demand characteristics were strong and the sample was self-selected, so it demonstrates role conformity under instruction rather than spontaneous situational evil.
• Q: Which ethical safeguards would you build into a deception experiment in India? A: Institutional Ethics Committee clearance under ICMR's 2017 guidelines, informed consent without revealing the hypothesis, minimal risk, the right to withdraw, confidentiality or anonymisation, and full debriefing with dehoaxing.

Common mistakes

• Treating stereotype, prejudice and discrimination as synonyms — they are the cognitive, affective and behavioural components respectively.
• Confusing conformity (group norms), compliance (a request) and obedience (an order from authority) in essay answers.
• Quoting Asch's conformity as "75%" of responses — 75% is the proportion of participants who conformed at least once; about 37% of critical responses were conforming.
• Reversing Kelley's cues, especially distinctiveness, or applying Weiner's dimensions (locus, stability, controllability) as if they were Kelley's.
• Saying larger rewards produce larger attitude change — dissonance predicts the opposite under insufficient justification.
• Forgetting to reverse-score negatively worded Likert items, which inverts the scale's meaning.
• Generalising Western findings to India without noting collectivism, hierarchy and caste/community structures, or presenting the Stanford Prison Experiment as uncontested evidence.
• Writing "catharsis reduces aggression" and "social loafing is the same as social facilitation" — both are contradicted by the evidence.

Related topics

Developmental psychology · Personality theories · Attitude and attitude measurement · Organisational behaviour and leadership · Psychological testing and research methods · Community and applied psychology.