Behaviourism

Pavlov, Thorndike, Skinner — Classical and Operant Conditioning

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Overview

Behaviourism is a foundational learning theory that views all learning as observable changes in behaviour resulting from stimulus-response associations. Unlike cognitive theories that focus on internal mental processes, behaviourism emphasizes what can be seen, measured and modified in the external environment. For JTET, this topic carries significant weight because it directly connects to classroom management, habit formation, discipline strategies and reinforcement techniques that teachers use daily.

The three pioneers you must master are **Ivan Pavlov** (classical conditioning), **Edward Thorndike** (connectionism and laws of learning) and **B.F. Skinner** (operant conditioning). Questions typically test your understanding of their experiments, key concepts like reinforcement versus punishment, and practical classroom applications. Expect 2-4 questions from this area in the Child Development section.

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Key Concepts

• **Behaviourism's core premise**: Learning is a permanent change in observable behaviour caused by external stimuli; internal mental states are not the focus of study.

• **Classical conditioning (Pavlov)**: Learning occurs when a neutral stimulus becomes associated with an unconditioned stimulus, eventually producing a conditioned response without the original stimulus.

• **Connectionism (Thorndike)**: Learning is the formation of bonds (connections) between stimuli and responses through trial and error; correct responses are "stamped in" through satisfaction.

• **Operant conditioning (Skinner)**: Behaviour is shaped by its consequences—reinforcement increases behaviour frequency while punishment decreases it.

• **Reinforcement types**: Positive reinforcement adds a pleasant stimulus; negative reinforcement removes an unpleasant stimulus. Both strengthen behaviour.

• **Punishment types**: Positive punishment adds an unpleasant stimulus; negative punishment removes a pleasant stimulus. Both weaken behaviour.

• **Extinction**: When reinforcement stops, the conditioned behaviour gradually disappears.

• **Shaping**: Complex behaviours are taught by reinforcing successive approximations toward the target behaviour.

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Formulas / Key Facts

| Theorist | Experiment | Key Discovery | |----------|------------|---------------| | Pavlov | Dog salivation experiment | Classical conditioning — stimulus substitution | | Thorndike | Puzzle box with cats | Trial and error learning — Law of Effect | | Skinner | Skinner Box with rats/pigeons | Operant conditioning — reinforcement schedules |

**Pavlov's Classical Conditioning Terms:**

• Unconditioned Stimulus (UCS) → Unconditioned Response (UCR): Food → Salivation
• Neutral Stimulus (NS): Bell (initially no response)
• Conditioned Stimulus (CS) → Conditioned Response (CR): Bell → Salivation

**Thorndike's Three Primary Laws:** 1. **Law of Readiness**: Learning is effective when the learner is prepared to act 2. **Law of Exercise**: Connections strengthen with practice (use) and weaken without practice (disuse) 3. **Law of Effect**: Responses followed by satisfaction are strengthened; those followed by discomfort are weakened

**Skinner's Reinforcement Schedules:**

• Fixed Ratio: Reinforcement after a set number of responses
• Variable Ratio: Reinforcement after unpredictable number of responses (most resistant to extinction)
• Fixed Interval: Reinforcement after a set time period
• Variable Interval: Reinforcement after unpredictable time periods

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Worked Examples

**Example 1: Identifying Classical Conditioning**

*A child who was once frightened by a loud noise in a hospital now feels anxious whenever she sees a doctor's white coat. Identify the conditioning elements.*

**Solution:**

• UCS (Unconditioned Stimulus): Loud noise
• UCR (Unconditioned Response): Fear/startle
• NS → CS (Neutral → Conditioned Stimulus): White coat
• CR (Conditioned Response): Anxiety at seeing white coat

This is classical conditioning because the neutral stimulus (white coat) was paired with the UCS (loud noise) and now produces the fear response independently.

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**Example 2: Applying Operant Conditioning in Classroom**

*A teacher wants to increase students' participation in class discussions. Which operant conditioning strategy should she use?*

**Solution:** The teacher should use **positive reinforcement**:

• Verbal praise when a student answers ("Excellent thinking, Ravi!")
• Giving stars or points for participation
• Extra privileges for active participants

This works because adding a pleasant consequence (praise/reward) after the desired behaviour (participation) increases the likelihood of that behaviour recurring.

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**Example 3: Distinguishing Negative Reinforcement from Punishment**

*A student completes homework on time to avoid the teacher's scolding. What type of conditioning is this?*

**Solution:** This is **negative reinforcement**, not punishment.

• The behaviour (completing homework) increases
• An unpleasant stimulus (scolding) is removed/avoided
• Since behaviour is strengthened, it is reinforcement

Remember: Reinforcement always increases behaviour; punishment always decreases it.

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Common Mistakes

• **Confusing negative reinforcement with punishment** → Negative reinforcement removes something unpleasant to increase behaviour; punishment decreases behaviour. The word "negative" refers to removal, not something bad.

• **Mixing up Pavlov and Skinner** → Pavlov's classical conditioning involves involuntary responses (salivation, fear) to paired stimuli. Skinner's operant conditioning involves voluntary behaviours shaped by consequences. If the question mentions "consequences" or "reinforcement," think Skinner.

• **Forgetting Thorndike's contribution** → Students often skip directly from Pavlov to Skinner. Thorndike's trial-and-error learning and Law of Effect were precursors to operant conditioning. His puzzle box experiment is frequently asked.

• **Assuming all repetition equals learning** → Thorndike's Law of Exercise states practice matters, but the Law of Effect clarifies that only satisfying outcomes strengthen connections. Mere repetition without reward is ineffective.

• **Thinking extinction means forgetting** → Extinction is the gradual weakening of a conditioned response when reinforcement stops. The learning isn't erased—it can reappear (spontaneous recovery). Forgetting is different from extinction.

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Quick Reference

• **Pavlov = Before the behaviour** (stimulus pairing creates response)
• **Skinner = After the behaviour** (consequences shape future behaviour)
• **Thorndike's Law of Effect**: Satisfying outcomes strengthen S-R bonds
• **Positive = Adding** something; **Negative = Removing** something
• **Reinforcement = Behaviour increases**; **Punishment = Behaviour decreases**
• **Variable ratio schedule** produces the strongest, most extinction-resistant behaviour