IB Psychology SLTopic 3 — Group BehaviourPaper 1 & 2Key study~9 min read
Social Learning Theory Applied to Groups
Nobody sits a new group member down and reads out the rules. You watch, you notice who gets praised and who gets ignored, and within a week you are behaving like everyone else. That is social learning, and it is how groups pass on their norms.
📚 What you need to know
Social learning theory (SLT) says people learn behaviour by watching others in a social setting and copying them.
A role model is someone who matters to the learner — a parent, an older sibling, a friend, a celebrity.
Direct reinforcement is being rewarded yourself. Vicarious reinforcement is watching someone else get rewarded.
Copying is far more likely when the behaviour is seen to be rewarded rather than punished or ignored.
Learning needs four steps: attention, retention, reproduction, motivation (ARRM).
The study you need is Bandura et al. (1961), the Bobo doll experiment.
Watching is enough
Older behaviourist ideas said you learn by doing something and being rewarded for it. Bandura pointed out the obvious problem: children copy things they have never been rewarded for and sometimes have never even tried.
The answer is vicarious reinforcement. If you see your brother praised for being aggressive on the football pitch, you have learned something about what aggression gets you — without being touched by the reward yourself. This is exactly how a group teaches its norms. Newcomers watch which behaviours earn approval and copy those.
Motivation is the step people forget. A child can watch, remember and be perfectly able to copy something, and still not do it if there is nothing in it for them.
ARRM is worth memorising because it lets you explain why some behaviour is not copied. If a question asks why children who watch violent films do not all become violent, the answer is usually motivation.
Key study: Bandura et al. (1961)
Part of the study
What happened
Aim
To see whether children would copy aggression after watching an adult behave aggressively.
Participants
72 children, 36 boys and 36 girls, mean age 4, from the day nursery at Stanford University in California. Nursery staff pre-rated each child’s aggression, and a matched pairs design spread aggression levels evenly across conditions.
Procedure
Three phases. First, a 10-minute observation where children watched either an aggressive model attacking a Bobo doll, a non-aggressive model playing calmly, or no model at all. Same-sex and opposite-sex models were used equally. Second, mild aggression arousal: the child was shown attractive toys and then told they were for another child. Third, 20 minutes in a room containing aggressive and non-aggressive toys including a Bobo doll, observed through a one-way mirror.
Results
Children who saw the aggressive model showed far more directly imitative aggression — punching, kicking, hitting with a toy hammer. There was no such imitation in the non-aggressive or control conditions. Same-sex imitation was stronger, and boys showed more physical aggression overall than girls.
Conclusion
Aggression can be learned by observation, and behaviour seen in one setting can be reproduced in a different one.
Why the frustration phase matters. The toys were taken away on purpose. Without that step the children might have had no reason to act at all — it supplies the motivation, the fourth step of ARRM. Mentioning this shows you understand the design rather than just remembering it.
Evaluating the research
What is strong about it
SLT explains how people pick up the norms and values of a group without anyone teaching them directly.
It applies well to schools, where modelling can be used deliberately to encourage engagement across the age range.
The procedure was standardised and the independent variable clearly operationalised, so the study is replicable and reliable.
Matched pairs on pre-rated aggression means the conditions started out equal, so the difference is unlikely to be down to naturally aggressive children clustering in one group.
What is weaker about it
Low ecological validity. Real aggression is learned over years from adults a child knows and trusts, not from a stranger in a room for ten minutes.
The findings tell us about a doll designed to be hit. Hitting a Bobo doll may be playing along rather than genuine aggression.
Ethics. Deliberately frustrating small children and exposing them to aggression breaches protection from harm. The study could not be run today.
Uncontrolled variables remain — each child’s home life, mood on the day, IQ, social skills and personality.
Link to concepts
Causality: SLT is a form of environmental determinism. If aggression is simply shaped by what you observe and what gets rewarded, there is little room left for free will or personal responsibility. Bandura later developed SLT into social cognitive theory, which adds reciprocal determinism — people shape their environment as much as it shapes them. That is the more balanced version.
Measurement: a controlled observation with a standardised procedure goes a long way towards measuring behaviour scientifically, which is difficult with something as messy as aggression.
EXAM PRACTICE
Explain how social learning theory accounts for group behaviour, with reference to one study. [9]
Step 1: state the theory
People learn group norms by watching role models and copying behaviour that is seen to be rewarded.
Step 2: give the mechanism
ARRM: attention, retention, reproduction, motivation. Vicarious reinforcement supplies the motivation.
Step 3: the study
Bandura et al. (1961). 72 children, mean age 4, three conditions: aggressive model, non-aggressive model, no model.
Step 4: results that prove the point
Only the aggressive-model group showed directly imitative aggression, and same-sex imitation was stronger.
Step 5: evaluate
Standardised and well matched, but low ecological validity and serious ethical problems with frustrating young children.
Theory + ARRM + study + result + evaluationThe same-sex imitation finding is the one most students leave out. It is evidence that who the model is matters.
💡 Exam tip
Use ARRM by name and explain each letter in a few words. It is quick and it earns credit.
Say vicarious reinforcement, not ‘indirect reward’. Precise terms score.
Mention the frustration phase — it shows you understand why the design works.
Social cognitive theory is a strong evaluation point: Bandura himself judged SLT too one-directional.
Link back to Topic 3 by explaining that groups teach norms through modelling, so newcomers copy whatever gets approval.
⚠ Common mix-up
Direct vs vicarious reinforcement. Direct means you were rewarded. Vicarious means you watched someone else be rewarded.
Saying the children were rewarded for hitting the doll. They were not. They imitated after observing.
Forgetting the control condition. The no-model group is what makes the comparison meaningful.
Calling it a lab experiment. It is a controlled observation with matched pairs.
Skipping motivation. Watching and remembering alone does not produce the behaviour.
Up next: Dopamine and Romantic Attraction — the first page of 3.2, where the same sociocultural questions get a biological answer.
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