Behaviourism — Pavlov, Thorndike, Skinner

Overview

Behaviourism is one of the most heavily tested theories in the Child Development and Pedagogy section of MP TET. It explains learning as a change in observable behaviour resulting from stimulus-response associations—without needing to look inside the "black box" of the mind. For a classroom teacher, behaviourist principles translate directly into everyday strategies: reinforcement, punishment, drill-practice, and habit formation.

Three names dominate this topic: **Ivan Pavlov** (classical conditioning), **Edward Thorndike** (connectionism / trial-and-error), and **B.F. Skinner** (operant conditioning). MP TET questions typically ask you to match the psychologist with the correct experiment, identify the type of conditioning in a classroom scenario, or recall Thorndike's laws. Master the distinctions and you can score full marks on 2–3 questions easily.

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Key Concepts

**Behaviourism's core assumption:** Learning is the formation of associations between stimuli and responses; internal mental states are not necessary to explain behaviour.

**Classical Conditioning (Pavlov):** A neutral stimulus, when repeatedly paired with an unconditioned stimulus, eventually produces a conditioned response on its own. Learning here is *involuntary* and *reflexive*.

**Operant Conditioning (Skinner):** Behaviour is shaped by its consequences—reinforcement increases behaviour; punishment decreases it. Learning here is *voluntary* and *goal-directed*.

**Thorndike's Connectionism:** Learning is a trial-and-error process; correct responses get "stamped in" by satisfaction, wrong responses get "stamped out" by discomfort.

**Reinforcement vs Punishment:** Reinforcement (positive or negative) *strengthens* behaviour; punishment (positive or negative) *weakens* behaviour. Confusing these is a common exam trap.

**Schedules of Reinforcement (Skinner):** Continuous vs intermittent; fixed-ratio, variable-ratio, fixed-interval, variable-interval—each affects response rate and resistance to extinction.

**Extinction:** When the conditioned stimulus is presented repeatedly without the unconditioned stimulus (classical) or when reinforcement stops (operant), the learned response fades.

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Key Facts / Must-Remember Points

| Psychologist | Experiment / Setup | Key Term(s) | |--------------|-------------------|-------------| | **Pavlov** | Dog + bell + food | Classical conditioning, UCS, UCR, CS, CR | | **Thorndike** | Cat in puzzle box | Trial-and-error, Law of Effect, Law of Exercise, Law of Readiness | | **Skinner** | Rat/pigeon in Skinner Box | Operant conditioning, reinforcement, punishment, shaping |

### Pavlov's Classical Conditioning Terms

**UCS (Unconditioned Stimulus):** Food — naturally triggers salivation.
**UCR (Unconditioned Response):** Salivation to food — natural, unlearned.
**CS (Conditioned Stimulus):** Bell — originally neutral, becomes associated with food.
**CR (Conditioned Response):** Salivation to bell alone — learned response.

### Thorndike's Three Primary Laws 1. **Law of Effect:** Responses followed by satisfaction are strengthened; those followed by discomfort are weakened. 2. **Law of Exercise (Use & Disuse):** Repeated use strengthens a connection; disuse weakens it. 3. **Law of Readiness:** Learning is effective when the organism is ready to act; forcing action when not ready causes annoyance.

### Skinner's Reinforcement-Punishment Grid

| | **Add something** | **Remove something** | |---|---|---| | **Increase behaviour** | Positive Reinforcement (praise, reward) | Negative Reinforcement (remove discomfort) | | **Decrease behaviour** | Positive Punishment (add unpleasant consequence) | Negative Punishment (remove privilege) |

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Worked Examples

### Example 1 — Identifying Classical Conditioning **Scenario:** A child feels anxious whenever he sees a maths textbook because the teacher once scolded him harshly during maths class.

**Analysis:**

UCS = Scolding (naturally causes fear)
UCR = Fear/anxiety (natural response to scolding)
CS = Maths textbook (originally neutral, now paired with scolding)
CR = Anxiety on seeing the textbook (learned response)

**Answer format for MCQ:** This is an example of *classical conditioning* (Pavlov).

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### Example 2 — Positive vs Negative Reinforcement **Scenario A:** A teacher gives a star sticker to a student who completes homework on time. → **Positive Reinforcement** (adding a pleasant stimulus to increase behaviour).

**Scenario B:** A teacher excuses a student from cleaning duty because she scored well on a test. → **Negative Reinforcement** (removing an unpleasant task to increase desired behaviour).

*Note:* Both reinforcements *increase* the target behaviour. The difference is whether you add or remove something.

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### Example 3 — Thorndike's Law of Effect **Scenario:** A cat is placed in a puzzle box. After several random movements, it accidentally presses a lever and escapes. Over repeated trials, the cat presses the lever faster.

**Explanation:** The satisfying consequence (escape) strengthens the lever-pressing response. Unsuccessful movements are "stamped out." This demonstrates trial-and-error learning governed by the Law of Effect.

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Common Mistakes

1. **Confusing negative reinforcement with punishment.**

*Wrong thinking:* "Negative" sounds bad, so it must reduce behaviour.
*Correct fix:* Negative reinforcement *removes* something unpleasant and *increases* behaviour. Punishment *decreases* behaviour.

2. **Mixing up Pavlov and Skinner.**

*Wrong thinking:* Both involve stimulus-response, so they are the same.
*Correct fix:* Pavlov = involuntary/reflexive responses (salivation). Skinner = voluntary behaviours shaped by consequences (pressing lever).

3. **Forgetting Thorndike's subsidiary laws.**

*Wrong thinking:* Only the Law of Effect matters.
*Correct fix:* MP TET may ask about Law of Exercise or Law of Readiness. Revise all three.

4. **Assuming classical conditioning only applies to animals.**

*Wrong thinking:* Pavlov used dogs; it does not apply to children.
*Correct fix:* Classroom phobias, brand jingles, and emotional responses are examples of classical conditioning in humans.

5. **Ignoring "shaping" in Skinner's work.**

*Wrong thinking:* Reinforcement only works when the full behaviour occurs.
*Correct fix:* Skinner introduced *shaping*—reinforcing successive approximations to the desired behaviour (e.g., praising a child for partial attempts at writing).

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Quick Reference

**Pavlov → Classical Conditioning → Involuntary responses → Bell-Dog-Salivation.**
**Thorndike → Trial-and-Error → Puzzle Box → Law of Effect, Exercise, Readiness.**
**Skinner → Operant Conditioning → Voluntary behaviour → Reinforcement & Punishment.**
**Reinforcement = behaviour ↑ | Punishment = behaviour ↓.**
**Negative ≠ Bad; Negative = Removal.**
**Classroom applications:** Rewards, praise (positive reinforcement), time-out (negative punishment), drill-practice (Law of Exercise).

Behaviourism