Behaviourism
Pavlov, Thorndike, Skinner — Classical and Operant Conditioning
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Overview
Behaviourism is a foundational learning theory that dominated psychology and education for much of the 20th century. It focuses exclusively on **observable behaviour** rather than internal mental states, arguing that all learning is the result of interactions between a learner and their environment. For Assam TET, this topic is essential because questions frequently test the distinctions between classical and operant conditioning, the specific contributions of Pavlov, Thorndike and Skinner, and the educational implications of behaviourist principles.
Understanding behaviourism helps teachers design effective classroom strategies—using reinforcement to encourage desired behaviour, understanding how habits form, and recognising why punishment often fails. Expect direct questions on laws of learning, types of reinforcement, and matching theorists to their experiments.
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Key Concepts
- **Behaviourism's core assumption**: Learning is a change in observable behaviour caused by environmental stimuli; internal thoughts and feelings are not studied.
- **Stimulus-Response (S-R) bond**: All behaviourist theories explain learning as the formation of connections between a stimulus (S) and a response (R).
- **Classical conditioning (Pavlov)**: Learning occurs when a neutral stimulus becomes associated with an unconditioned stimulus, eventually triggering the same response.
- **Connectionism (Thorndike)**: Learning is trial-and-error; successful responses are "stamped in" through satisfaction, forming S-R connections.
- **Operant conditioning (Skinner)**: Behaviour is shaped by its consequences—reinforcement increases behaviour, punishment decreases it.
- **Reinforcement vs Punishment**: Reinforcement (positive or negative) strengthens behaviour; punishment weakens it. This distinction is heavily tested.
- **Role of the learner**: In behaviourism, the learner is passive—responding to environmental stimuli rather than actively constructing knowledge.
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Formulas / Key Facts
| Theorist | Experiment | Core Concept | Key Terms | |----------|------------|--------------|-----------| | **Ivan Pavlov** | Dog salivation experiment | Classical conditioning | UCS, UCR, CS, CR, extinction, generalisation | | **E.L. Thorndike** | Cat in puzzle box | Trial-and-error learning | Laws of Readiness, Exercise, Effect | | **B.F. Skinner** | Rat/pigeon in Skinner Box | Operant conditioning | Positive/negative reinforcement, punishment, shaping |
### Pavlov's Classical Conditioning Terms
- **UCS (Unconditioned Stimulus)**: Naturally triggers a response (food)
- **UCR (Unconditioned Response)**: Natural response to UCS (salivation to food)
- **CS (Conditioned Stimulus)**: Previously neutral stimulus that becomes associated (bell)
- **CR (Conditioned Response)**: Learned response to CS (salivation to bell)
### Thorndike's Three Primary Laws 1. **Law of Readiness**: Learning is effective when the learner is prepared to act 2. **Law of Exercise**: Repeated practice strengthens S-R connections 3. **Law of Effect**: Responses followed by satisfaction are strengthened; those followed by discomfort are weakened
### Skinner's Operant Conditioning Matrix
| | Add Stimulus | Remove Stimulus | |---|---|---| | **Increase Behaviour** | Positive Reinforcement | Negative Reinforcement | | **Decrease Behaviour** | Positive Punishment | Negative Punishment |
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Worked Examples
### Example 1: Identifying Classical Conditioning **Question**: A child feels anxious whenever he sees his mathematics teacher because he was once scolded harshly during a maths class. Identify the UCS, UCR, CS and CR.
**Solution**:
- UCS = Harsh scolding (naturally causes fear)
- UCR = Anxiety/fear (natural response to scolding)
- CS = Mathematics teacher (neutral stimulus now associated with scolding)
- CR = Anxiety on seeing the teacher (learned response)
This is classical conditioning because a neutral stimulus (teacher) became associated with an unpleasant event.
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### Example 2: Distinguishing Reinforcement Types **Question**: A teacher stops criticising a student when the student completes homework on time. What type of conditioning is this?
**Solution**:
- The teacher removes something unpleasant (criticism)
- The behaviour (completing homework) increases
- This is **Negative Reinforcement**—removing an aversive stimulus to increase desired behaviour
Common confusion: This is NOT punishment. Punishment decreases behaviour; here, behaviour is being encouraged.
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### Example 3: Applying Thorndike's Laws **Question**: A teacher gives stars to students who answer correctly in class. Which law of Thorndike is being applied?
**Solution**:
- Correct answers are followed by a satisfying consequence (stars)
- Students are more likely to participate again
- This illustrates the **Law of Effect**—satisfying consequences strengthen the S-R bond
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Common Mistakes
1. **Confusing negative reinforcement with punishment**
- Wrong thinking: "Negative" means something bad, so negative reinforcement must decrease behaviour
- Correct fix: Both positive AND negative reinforcement increase behaviour. Negative reinforcement means removing something unpleasant to encourage behaviour.
2. **Mixing up Pavlov and Skinner**
- Wrong thinking: Both deal with conditioning, so their mechanisms are the same
- Correct fix: Pavlov deals with involuntary/reflex responses (salivation); Skinner deals with voluntary behaviours shaped by consequences.
3. **Forgetting that classical conditioning involves reflexes**
- Wrong thinking: Classical conditioning can explain all learned behaviour
- Correct fix: Classical conditioning explains automatic, emotional or physiological responses (fear, salivation). Voluntary actions are explained by operant conditioning.
4. **Misremembering Thorndike's laws**
- Wrong thinking: Law of Exercise means any repetition leads to learning
- Correct fix: Thorndike later modified this—practice must be accompanied by feedback/satisfaction to be effective.
5. **Thinking behaviourism explains all learning**
- Wrong thinking: Since behaviourism was historically dominant, it explains everything
- Correct fix: Behaviourism ignores cognitive processes. For complex learning (problem-solving, insight), cognitive theories are more appropriate.
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Quick Reference
- **Pavlov** = Classical conditioning = Involuntary responses = Bell-dog-salivation
- **Thorndike** = Connectionism = Trial and error = Cat in puzzle box = Laws of Readiness, Exercise, Effect
- **Skinner** = Operant conditioning = Voluntary behaviour = Consequences shape behaviour = Skinner Box
- **Reinforcement INCREASES behaviour; Punishment DECREASES behaviour**
- **Negative reinforcement ≠ Punishment** (most common exam trap)
- **Educational implication**: Use immediate, consistent reinforcement; avoid excessive punishment; create readiness before teaching