Human relationships: core focus

· Human relationships = applied psychology of how people influence and are influenced by others in friendships, romantic relationships, families, workplaces and groups.
· Exam answers should connect behaviour to the biological, cognitive and sociocultural approaches, plus research methodology.
· Main syllabus split: group behaviour and interpersonal relationships.
· High-scoring answers explain mechanism + evidence + application + evaluation rather than only defining terms.
· Useful concepts to apply throughout: bias, causality, change, measurement, perspective and responsibility.

Group behaviour

· Group behaviour = behaviour shaped by real or imagined membership of a social group.
· Key exam idea: people behave differently in groups because of norms, social identity, social learning, conformity, compliance, culture and acculturation.
· Group behaviour can be explained at multiple levels: individual cognition, social influence, cultural norms and intergroup relations.
· Strong evaluation points: ecological validity, cultural bias, sampling bias, ethics, reductionism vs holism, and correlation vs causation.
· Applications: changing prejudice, improving intergroup relations, supporting acculturation, reducing harmful conformity, and promoting prosocial group norms.

Social identity theory

· Social identity theory explains how people define themselves through group membership.
· Core process: social categorisation → social identification → social comparison.
· People favour the in-group to maintain positive social identity and may show out-group discrimination.
· Can explain prejudice, stereotyping, national identity, team loyalty, workplace identity and intergroup conflict.
· Use in essays for: application of social identity theory to explain and change group behaviour(s).
· Evaluation: strong for explaining intergroup bias, but may understate individual differences, situational factors and complex identities.

This diagram summarises how social identity develops through group membership and comparison. Use it to revise why people may favour their in-group and discriminate against an out-group. It is most relevant to essays on group behaviour and intergroup relations. Source

Social learning theory in groups

· Social learning theory explains group behaviour through observation, modelling, imitation and vicarious reinforcement.
· People copy models who are high-status, similar, rewarded, admired or seen as group representatives.
· In groups, norms can spread when behaviours are rewarded socially, such as through approval, status, belonging or online attention.
· Application: can explain and change behaviours such as aggression, helping, health behaviour, gender roles, prosocial behaviour or group norms.
· Evaluation: useful for applied change, but may be limited by individual agency, biological predispositions and difficulty proving direct causality in natural group settings.

Conformity

· Conformity = changing behaviour or beliefs to match group norms or majority influence.
· Key types: compliance = public agreement without private belief; internalisation = genuine private acceptance; identification = conforming to belong to a valued group.
· Major explanations: normative social influence = desire to be liked/accepted; informational social influence = desire to be correct.
· Factors affecting conformity: group size, unanimity, task ambiguity, culture, status, public vs private response and confidence.
· Exam focus: the role of conformity in understanding group behaviour(s).
· Evaluation: classic conformity research may have issues with ecological validity, demand characteristics, ethics, cultural bias and historical context.

This image shows the line-judgement task used to study conformity. It helps students visualise how a simple perceptual task can create pressure to agree with an incorrect majority. Use it when revising normative influence and methodological evaluation of classic conformity studies. Source

Compliance techniques

· Compliance = changing behaviour in response to a direct or indirect request while not necessarily changing private beliefs.
· Foot-in-the-door: small initial request increases likelihood of agreeing to a larger request.
· Door-in-the-face: large initial request is refused, making a smaller request seem reasonable.
· Low-balling: agreement is gained first, then the true cost is revealed.
· Reciprocity: people feel pressure to return favours.
· Exam focus: application of one or more compliance techniques to change group behaviour(s).
· Evaluation: effectiveness may depend on culture, context, perceived freedom, ethical responsibility and whether the behaviour change lasts.

Cultural dimensions and group behaviour

· Cultural dimensions = measurable cultural values used to compare broad patterns of behaviour across cultures.
· Common examples: individualism–collectivism, power distance, uncertainty avoidance, masculinity–femininity, long-term orientation.
· Individualist cultures may emphasise autonomy, personal goals and individual achievement.
· Collectivist cultures may emphasise harmony, duty, interdependence and group goals.
· Use cultural dimensions carefully: they explain population-level tendencies, not fixed traits of every person.
· Strong evaluation: avoid ecological fallacy, stereotyping, imposed etic bias and overgeneralisation.
· Exam focus: role of one or more cultural dimensions in understanding group behaviour(s).

Acculturation

· Acculturation = psychological and behavioural change after sustained contact with another culture.
· Common strategies: integration, assimilation, separation and marginalisation.
· Integration = maintaining heritage culture while also participating in the wider society; often linked to better adaptation when supported by the host culture.
· Assimilation = giving up heritage culture to adopt the new culture.
· Separation = maintaining heritage culture while avoiding the new culture.
· Marginalisation = weak connection to both heritage and host culture; often associated with higher stress.
· Exam focus: different acculturation strategies and their effect on human behaviour.
· Evaluation: acculturation is shaped by host-society attitudes, discrimination, language, social support, identity, age, migration reason and measurement method.

This diagram is useful for revising Berry’s acculturation model and the wider cultural context of adaptation. It helps connect acculturation strategies to social, ecological and cultural influences. Use it for essays on migration, cultural contact and group behaviour. Source

Interpersonal relationships

· Interpersonal relationships = relationships between individuals, including social relationships and interpersonal conflict/aggression.
· Exam answers may focus on how relationships are formed, maintained, improved or damaged.
· Required syllabus areas: chemical messengers, cognitive explanations, communication/language, and strategies for improving relationships.
· Strong answers should specify the relationship type: romantic relationships, friendships, parent–child relationships, work relationships, conflict or aggression.
· Evaluation should consider culture, gender, sampling, self-report bias, longitudinal evidence, ethical sensitivity and whether findings transfer across relationship types.

Chemical messengers in interpersonal relationships

· Chemical messengers = hormones/neurotransmitters that influence behaviour and relationship processes.
· Oxytocin is often linked to bonding, trust, attachment, caregiving and pair-bonding, but effects are context-dependent.
· Dopamine may contribute to reward, attraction, motivation and reinforcement in relationships.
· Serotonin may influence mood, emotional regulation and aggression-related behaviour.
· Testosterone may be discussed in relation to dominance, competition or aggression, but avoid deterministic claims.
· Exam focus: role of one or more chemical messengers in interpersonal relationships.
· Evaluation: biological explanations can be useful but risk biological reductionism; relationship behaviour is also shaped by cognition, culture, communication and social context.

This labelled structure represents oxytocin, a chemical messenger often discussed in bonding and attachment. It reminds students that biological explanations can support relationship research but should not be treated as complete explanations. Use it when evaluating biological reductionism in interpersonal relationships. Source

Cognitive explanations for relationships

· Cognitive explanations focus on how thoughts, beliefs and interpretations shape relationships.
· Possible examples: schemas, attribution, cognitive biases, expectations, social exchange, equity or cost–benefit evaluations.
· Schemas influence how people interpret partners’ actions, remember relationship events and predict future behaviour.
· Attribution affects conflict: people may explain negative behaviour as due to personality, intention or situation.
· Cognitive biases can maintain conflict, jealousy, trust or prejudice within relationships.
· Exam focus: one or more cognitive explanations for interpersonal relationships.
· Evaluation: cognitive models explain interpretation and decision-making, but may underplay emotion, biology, culture and the interactional nature of relationships.

Communication and language in relationships

· Communication shapes relationship quality through verbal language, non-verbal cues, listening, feedback, conflict style and emotional expression.
· Miscommunication can increase conflict when messages are ambiguous, hostile, culturally misread or poorly timed.
· Non-verbal communication includes eye contact, facial expression, posture, tone, touch and interpersonal distance.
· Language can create closeness through self-disclosure, empathy and validation, or conflict through criticism, contempt, defensiveness and withdrawal.
· Communication should be studied with attention to culture, because norms for directness, eye contact, silence and emotional expression vary.
· Exam focus: role of communication in interpersonal relationships.

This diagram summarises the basic components of interpersonal communication. It can help students organise explanations of how messages, feedback and context affect relationships. Use it for essays on communication/language and relationship improvement. Source

Strategies for improving relationships

· Strategies for improving relationships should be explained and evaluated, not just named.
· Possible strategies: communication training, active listening, conflict-resolution training, couples therapy, mediation, perspective-taking, empathy training, cooperative learning, intergroup contact or social skills training.
· Good strategy answers include: target behaviour, psychological mechanism, evidence, effectiveness, limitations and ethical considerations.
· For interpersonal conflict/aggression, strategies may aim to reduce hostile attribution bias, improve emotion regulation, or increase constructive communication.
· For social relationships, strategies may increase trust, self-disclosure, support, reciprocity and shared identity.
· Evaluation: effectiveness may depend on motivation, culture, power imbalance, relationship type, severity of conflict, duration of intervention and quality of measurement.

Research methodology for human relationships

· Recommended class practical for this context: survey/questionnaire.
· Minimum sample size for student-led questionnaire practical: 10 participants.
· Examples linked to this topic: Hazan and Shaver (1987) love quiz and Buss (1989) cross-cultural differences in attraction.
· Suitable methods: surveys/questionnaires, interviews, observations, experiments, correlational studies and cross-cultural research.
· Common measures: self-report scales, relationship satisfaction ratings, attraction ratings, conformity responses, behavioural observations and qualitative themes.
· Common sampling techniques: opportunity, self-selected, random, stratified and snowball sampling.
· Key research issues: social desirability bias, demand characteristics, sampling bias, cultural bias, ethical sensitivity, anonymity, validity, reliability and generalizability.
· For causality: experiments can test cause-and-effect better than correlational research, but relationship research often has ethical and ecological constraints.

Ethics in human relationships research

· Always consider informed consent, right to withdraw, anonymity, confidentiality, debriefing and protection from harm.
· Relationship topics may be sensitive, especially conflict, aggression, romantic relationships, family relationships, bullying or mental health links.
· Questionnaires must still gain consent before participation.
· Avoid unnecessary distress, embarrassment or pressure to disclose private information.
· Ethical responsibility also includes avoiding stigma, stereotyping and overgeneralised cultural claims.

Exam performance tips

· For any SAQ/essay, define the key term and clearly link it to human relationships.
· Use at least one well-explained study or example to support each main claim.
· Use the phrase “This shows…” to explicitly connect evidence back to the question.
· Evaluate using methodology, ethics, culture, application, alternative explanations and reductionism/holism.
· Avoid generic answers: specify whether the question is about group behaviour, social relationships or interpersonal conflict/aggression.