Skinner's Operant Conditioning — Previous Year Questions
📊 Topic Overview
| Metric | Value |
|---|---|
| Total Questions | 8 (3.6%) |
| Priority | 🟡 MEDIUM — Section A or B |
🎯 Must-Know Concepts
- Operant behaviour vs respondent behaviour
- Positive and negative reinforcement; positive and negative punishment
- Schedules of reinforcement (FR, VR, FI, VI)
- Extinction in operant conditioning
- Skinner's application to personality
- Distinction from classical conditioning
📝 Master Answer — Section B (250 words / 6 marks)
Q. Explain operant behaviour and elucidate the schedules of reinforcement by Skinner. (6 marks)
Also: "Discuss Skinner's learning theory of personality." (2022-Dec A2); "Explain in detail operant behaviour and schedules of reinforcement." (2012-Dec)
Operant Behaviour
B.F. Skinner (1904–1990) distinguished between respondent behaviour (elicited by a known stimulus — classical conditioning) and operant behaviour (emitted spontaneously and controlled by its consequences). Operant conditioning is the process by which the frequency of voluntary behaviour is modified by its consequences. The law of effect (Thorndike) forms its basis: behaviours followed by satisfying consequences are repeated; those followed by unpleasant consequences decrease.
Key terms:
- Positive reinforcement: Adding a pleasant stimulus to increase behaviour
- Negative reinforcement: Removing an unpleasant stimulus to increase behaviour
- Positive punishment: Adding an unpleasant stimulus to decrease behaviour
- Negative punishment: Removing a pleasant stimulus to decrease behaviour
Schedules of Reinforcement
Reinforcement does not need to follow every response. Partial reinforcement schedules produce robust, persistent behaviour:
| Schedule | Description | Effect | Example |
|---|---|---|---|
| Fixed Ratio (FR) | After every nth response | High, steady rate; brief pause post-reinforcement | Factory piecework |
| Variable Ratio (VR) | After a variable number of responses | Highest rate; most resistant to extinction | Slot machines, gambling |
| Fixed Interval (FI) | First response after fixed time rewarded | Low rate, then accelerates before interval ends | Weekly salary |
| Variable Interval (VI) | First response after variable time rewarded | Low, steady rate; persistent | Fishing, checking email |
Application to Personality
Skinner argued personality is the sum of learned operant behaviours shaped by an individual's reinforcement history. Traits are stable because certain behaviours have been consistently reinforced. Maladaptive behaviours persist because they were reinforced in the past — even if no longer functional.
🧠 Memory Aid
4 schedules: "FR-VR-FI-VI"
- Fixed: predictable
- Variable: unpredictable (more resistant to extinction)
- Ratio: based on responses
- Interval: based on time
💡 Exam Tips
- The 4 schedules table with descriptions and examples earns maximum marks efficiently.
- Know that variable ratio produces the highest and most persistent response rates.
- For Section A on "Skinner's learning theory of personality," cover: operant conditioning basics → schedules → extinction → application to personality traits and maladaptive behaviour.