CUET UG Psychology: Basic Processes - Learning, Classical, Operant Conditioning, Observational Learning

Must-Know

• Classical conditioning was demonstrated by Ivan Pavlov using dogs; neutral stimulus (bell) became conditioned stimulus after pairing with unconditioned stimulus (food).
• Unconditioned response (salivation to food) becomes conditioned response (salivation to bell) after repeated pairings.
• Acquisition is the initial stage of learning a new behavior through conditioning; occurs most rapidly with forward conditioning (CS precedes US).
• Extinction in classical conditioning occurs when CS is presented repeatedly without US, leading to gradual disappearance of CR.
• Spontaneous recovery refers to the reappearance of a previously extinguished CR after a rest period; demonstrates that extinction suppresses but does not erase learning.
• Generalization occurs when stimuli similar to CS elicit similar responses; e.g., child afraid of white rat also fears white rabbit.
• Discrimination is the ability to distinguish between CS and similar stimuli; e.g., dog salivates only to 1000 Hz tone, not 1200 Hz.
• John B. Watson and Rosalie Rayner demonstrated classical conditioning in humans via "Little Albert" experiment (verify from NCERT).
• Operant conditioning was developed by B.F. Skinner using the Skinner box; lever-pressing behavior in rats increased when reinforced.
• Positive reinforcement strengthens behavior by adding a rewarding stimulus; e.g., giving a treat when a dog sits on command.
• Negative reinforcement strengthens behavior by removing an aversive stimulus; e.g., seatbelt alarm stops when driver buckles up.
• Positive punishment weakens behavior by adding an aversive stimulus; e.g., scolding a child for lying.
• Negative punishment weakens behavior by removing a desirable stimulus; e.g., taking away phone for breaking curfew.
• Primary reinforcers satisfy biological needs (e.g., food, water); secondary reinforcers gain value through association (e.g., money, grades).
• Shaping involves reinforcing successive approximations of a target behavior; e.g., teaching a pigeon to turn in a circle by rewarding small turns.
• Fixed-ratio schedule reinforces behavior after a set number of responses; e.g., factory worker paid per 10 garments stitched.
• Variable-ratio schedule reinforces after unpredictable number of responses; highly resistant to extinction; e.g., slot machine gambling.
• Fixed-interval schedule reinforces first response after a fixed time; e.g., checking email more frequently as deadline approaches.
• Variable-interval schedule reinforces first response after varying time intervals; e.g., pop quizzes.
• Observational learning was demonstrated by Albert Bandura in the Bobo doll experiment; children imitated aggressive behavior modeled by adults.
• Four processes in observational learning: attention, retention, reproduction, motivation (Bandura’s model).
• Vicarious reinforcement occurs when observer sees model being rewarded, increasing likelihood of imitating behavior.
• Cognitive maps are mental representations of physical space; demonstrated by Tolman in rats navigating mazes without immediate reward (latent learning).
• Latent learning refers to learning that occurs without immediate reinforcement and is not demonstrated until incentive is provided.
• Insight learning involves sudden understanding of a problem’s solution; demonstrated by Köhler with chimpanzees using sticks to reach bananas.

Difficulty Level

Intermediate — Requires understanding of behavioral differences and experimental examples, but concepts are directly from NCERT with clear definitions.

Common CUET Traps

• Trap: Confusing negative reinforcement with punishment.
  Avoid: Negative reinforcement increases behavior by removing something unpleasant; punishment decreases behavior.
• Trap: Assuming spontaneous recovery means full return of original strength of response.
  Avoid: Spontaneously recovered response is weaker and extinguishes faster without re-pairing.
• Trap: Believing observational learning requires reinforcement for the observer.
  Avoid: Learning can occur without reinforcement (vicarious learning); performance may require motivation.

Practice MCQs

1. In Pavlov’s experiment, the bell became a conditioned stimulus only after:
   A. It was presented after food
   B. It was paired repeatedly with food
   C. The dog salivated to food alone
   D. The dog ignored the bell

Answer: B
Explanation: The neutral stimulus (bell) becomes conditioned through repeated pairing with the unconditioned stimulus (food).
Why others fail: Option A reverses the correct sequence—CS must precede US for effective conditioning.

1. A student studies hard to avoid parental scolding. This is an example of:
   A. Positive reinforcement
   B. Negative reinforcement
   C. Positive punishment
   D. Negative punishment

Answer: B
Explanation: Avoiding scolding (removing aversive stimulus) increases studying behavior—definition of negative reinforcement.
Why others fail: Option C (positive punishment) is tempting because scolding is involved, but it refers to applying punishment, not avoiding it.

1. Which schedule of reinforcement is most resistant to extinction?
   A. Fixed-ratio
   B. Variable-ratio
   C. Fixed-interval
   D. Variable-interval

Answer: B
Explanation: Variable-ratio schedules produce high, steady response rates and are highly resistant to extinction (e.g., gambling).
Why others fail: Fixed-ratio is tempting due to high response rate, but it extinguishes faster than variable-ratio.

1. In Bandura’s Bobo doll experiment, children who observed aggressive models were more likely to act aggressively. This demonstrates:
   A. Classical conditioning
   B. Shaping
   C. Observational learning
   D. Latent learning

Answer: C
Explanation: Learning by observing and imitating others’ behavior is observational learning.
Why others fail: Option D (latent learning) involves hidden learning without immediate performance, but here behavior was immediately demonstrated.

1. A rat in a maze receives food every third time it presses a lever. This is an example of:
   A. Fixed-interval schedule
   B. Variable-ratio schedule
   C. Fixed-ratio schedule
   D. Continuous reinforcement

Answer: C
Explanation: Reinforcement after a fixed number of responses (every third press) defines fixed-ratio schedule.
Why others fail: Option B (variable-ratio) involves unpredictable numbers, which is not the case here.

Last-Minute Revision

• Pavlov – classical conditioning – dogs, bell, salivation.
• UCS (food)-UCR (salivation); CS (bell)-CR (salivation).
• Extinction: CS without UCS-CR decreases.
• Spontaneous recovery: CR reappears after rest.
• Generalization: responding to similar stimuli.
• Discrimination: responding only to specific CS.
• Little Albert: fear conditioning in humans (verify from NCERT).
• Skinner – operant conditioning – Skinner box.
• Positive reinforcement: add reward-increase behavior.
• Negative reinforcement: remove aversive-increase behavior.
• Positive punishment: add aversive-decrease behavior.
• Negative punishment: remove reward-decrease behavior.
• Shaping: reinforce successive approximations.
• FR: fixed number (e.g., piecework).
• VR: variable number (e.g., lottery) – most resistant to extinction.
• FI: fixed time (e.g., weekly quiz).
• VI: variable time (e.g., random checks).
• Bandura – Bobo doll – observational learning.
• Observational learning steps: attention, retention, reproduction, motivation.
• Tolman – cognitive map – latent learning in rats.
• Köhler – insight learning – chimpanzee with stick.