Psychology - Learning Chapter 5

Ivan Pavlov (1849–1936): Not a psychologist; a Russian physiologist who received a Nobel Prize for his work on digestion (Miyata, 2009).
Initial Research: Investigated saliva's role in digestion using dogs as subjects.
Key Observation: Noted that dogs began salivating before food was presented (i.e., at Pavlov’s arrival or the sound of footsteps).

Reflexive Responses: These are involuntary reactions to external stimuli, such as salivation. A stimulus is defined as anything perceptible by the senses.
Example: Dogs salivating at the sight or sound of food, showing anticipation due to learned associations.

Definition: Classical conditioning is a basic learning process that involves pairing a neutral stimulus with a response-producing stimulus until the neutral stimulus elicits the same response.
Elicit: Means to draw out or bring forth an existing behavior, usually reflexive in nature (e.g., sneezing, salivating).

Process: Involves pairing a neutral stimulus (e.g., sight of Pavlov) with an unconditioned stimulus (UCS) that naturally elicits a reflexive response (unconditioned response, UCR).
Outcome: Eventually, the neutral stimulus (now called conditioned stimulus, CS) will elicit the same response (conditioned response, CR) as the natural stimulus.
Example: Dogs learned to associate Pavlov (CS) with food (UCS), thus salivating at Pavlov's sight.

Unconditioned Stimulus (UCS): The natural stimulus that reflexively elicits a response (e.g., food).
Unconditioned Response (UCR): The unlearned, reflexive response elicited by the UCS (e.g., salivation in response to food).
Conditioned Stimulus (CS): Initially neutral stimulus that acquires the ability to elicit a reflexive response through association (e.g., the metronome sound).
Conditioned Response (CR): The learned, reflexive response to the CS (e.g., salivation in response to the metronome).

Experiments: Used stimuli like a ticking metronome (CS) paired with food (UCS) to condition dogs.
Conclusion: Conditioned responses can occur without direct association with the natural stimulus (food).

Pavlov's Research Team: Over 140 scientists worked with him, including prominent figures such as his daughter V. I. Pavlova.
Factors Affecting Conditioning: Frequency of pairings, timing effectiveness, and context impact how strongly a conditioned response forms.

Stimulus Generalization: The ability to elicit a conditioned response to stimuli similar to the original (e.g., salivating at different pitches).
Stimulus Discrimination: Learning to respond to specific stimuli while ignoring others (e.g., salivation to a specific tone, not others).

Charles Henry Turner: Pioneered similar classical conditioning research but is often overlooked; investigated sensory perceptions in animals like moths.
Turner and Moths: Found that moths conditioned to associate sound with handling would respond with wing flapping, demonstrating classical conditioning.

Definition: Process where a conditioned stimulus can serve as an unconditioned stimulus in a new trial (e.g., pairing a new neutral stimulus with a CS to elicit a CR).
Example: Sensitivity developed to external signals (e.g., fears learned through association with painful stimuli).

Extinction: Gradual weakening and disappearance of a conditioned response when the CS is presented without the UCS.
Spontaneous Recovery: The reappearance of an extinguished conditioned response after a pause in exposure.

John Watson: Reformed psychology to a focus on observable behaviors, founding behaviorism, building off Pavlov's work on classical conditioning.
Key Belief: All behavior, including emotions, can be conditioned and learned through environmental interactions; he famously claimed to be able to train any child into any profession given the right environment.

Watson's Experiment: Conducted the famous conditioning study with Little Albert to demonstrate classical conditioning of emotional responses, specifically fear.
Little Albert Study:
- Initial Phase: Little Albert, a calm baby, showed no fear of a white rat.
- Conditioning Phase: Repeatedly exposed to a loud noise (UCS) paired with the rat (CS), leading to fear (CR).
- Outcome: Albert developed fear not just towards the rat, but also to similar stimuli (e.g., other furry objects).
Critiques: Ethical concerns regarding the handling of Little Albert’s conditioned fears; emotional responses weren’t counter-conditioned.

Definition of Operant Conditioning: A learning process where behaviors are modified by their consequences, such as reinforcement or punishment.
Reinforcement: Increases the likelihood of behavior repeating; can be positive (adding a pleasant stimulus) or negative (removing an unpleasant stimulus).
Punishment: Decreases the likelihood of behavior repeating; can include positive punishment (adding an aversive stimulus) or negative punishment (removing a reinforcing stimulus).

Primary Reinforcers: Naturally reinforcing without learning (e.g., food).
Conditioned Reinforcers: Acquired reinforcing properties through association with primary reinforcers (e.g., money).

Continuous Reinforcement: Reinforcing every occurrence of a behavior.
Partial Reinforcement: Reinforcing behavior intermittently, which can lead to greater resistance to extinction.

Behavior Modification: Techniques applied in various fields (education, therapy, etc.) to encourage adaptive behaviors and decrease maladaptive behaviors.
Gamification: The application of game-design elements in non-game contexts (e.g., providing rewards for meeting fitness goals).

Both classical and operant conditioning provide frameworks for understanding how behaviors are learned and modified, emphasizing the influence of environment and reinforcement patterns.