Psychology Chapter 6: Learning – Classical, Operant, and Observational Approaches

Principles of Learning

Definition of Learning

Learning refers to any relatively durable change in behavior or knowledge that is due to experience. It is a foundational concept in psychology, underlying how organisms adapt to their environments.

• Key Point: Learning involves changes that persist over time, distinguishing it from temporary changes.

Classical Conditioning

Basic Concepts

Classical conditioning is a type of learning in which a neutral stimulus becomes associated with a meaningful stimulus, eventually eliciting a similar response.

• Unconditioned Stimulus (UCS): A stimulus that naturally triggers a response (e.g., food).

• Unconditioned Response (UCR): The natural reaction to the UCS (e.g., salivation).

• Conditioned Stimulus (CS): A previously neutral stimulus that, after association with the UCS, triggers a conditioned response.

• Conditioned Response (CR): The learned response to the CS.

Example: In Pavlov's experiments, dogs learned to salivate (CR) to the sound of a bell (CS) after it was repeatedly paired with food (UCS).

Key Terms in Classical Conditioning

• Acquisition: The initial stage of learning when the CS and UCS are paired.

• Extinction: The gradual weakening of the CR when the CS is repeatedly presented without the UCS.

• Spontaneous Recovery: The reappearance of a previously extinguished CR after a period of non-exposure to the CS.

• Generalization: The tendency to respond to stimuli similar to the CS.

• Discrimination: The ability to distinguish between the CS and other stimuli.

Reinforcement Effect

Reinforcement in classical conditioning refers to the process by which the association between the CS and UCS is strengthened, increasing the likelihood of the CR.

Operant Conditioning

Edward Thorndike and the Law of Effect

Thorndike proposed that behaviors followed by satisfying effects are more likely to be repeated, forming the basis for operant conditioning.

• Law of Effect: Responses followed by positive outcomes are strengthened.

B.F. Skinner and Operant Conditioning

Skinner expanded on Thorndike's work, emphasizing that behavior is controlled by its consequences.

• Reinforcement: Increases the likelihood of a behavior.

• Punishment: Decreases the likelihood of a behavior.

• Positive Reinforcement: Adding a desirable stimulus to increase behavior.

• Negative Reinforcement: Removing an aversive stimulus to increase behavior.

• Positive Punishment: Adding an aversive stimulus to decrease behavior.

• Negative Punishment: Removing a desirable stimulus to decrease behavior.

Example: Giving a child candy for completing homework (positive reinforcement); taking away a toy for misbehavior (negative punishment).

The Skinner Box

The Skinner Box is an apparatus used to study operant conditioning in animals, typically involving levers, food, and lights to measure responses.

Acquisition & Shaping

• Acquisition: The process of learning the association between a behavior and its consequence.

• Shaping: Gradually guiding behavior toward a desired outcome by reinforcing successive approximations.

Extinction in Operant Conditioning

Extinction occurs when reinforcement of a previously learned behavior is discontinued, leading to a decrease in that behavior.

Reinforcement Schedules

Types of Schedules

Reinforcement schedules determine how and when behaviors are reinforced, affecting the rate and strength of learning.

Schedule Type	Description	Example
Continuous	Every response is reinforced	Giving a treat every time a dog sits
Fixed Ratio	Reinforcement after a set number of responses	Piecework pay for every 10 items produced
Variable Ratio	Reinforcement after a variable number of responses	Slot machines
Fixed Interval	Reinforcement after a set period of time	Weekly paycheck
Variable Interval	Reinforcement after varying time intervals	Checking for a random email

Phobias: Impacts of Classical and Operant Conditioning

Phobias

Phobias are persistent, irrational fears of specific objects or situations that pose no real danger. Both classical and operant conditioning can contribute to the development and maintenance of phobias.

Phobia: A Biological Basis

Some phobias may have evolutionary roots, such as fear of snakes or heights, which could have been adaptive for survival.

Habituation

Habituation is the process by which repeated exposure to a stimulus leads to a decrease in response.

Latent Learning

Definition and Example

Latent learning refers to learning that is not immediately expressed in behavior until there is a reason to demonstrate it.

• Example: Rats learning the layout of a maze without reinforcement, but showing knowledge when a reward is introduced.

Cognitive Reinforcement

Cognitive Map

A cognitive map is a mental representation of the physical features of the environment, aiding navigation and spatial learning.

Observational Learning

Definition and Key Processes

Observational learning occurs when behavior is influenced by watching others, known as models.

• Attention: Noticing the model's behavior.

• Retention: Remembering what was observed.

• Reproduction: Ability to replicate the behavior.

• Motivation: Desire to perform the behavior.

Example: Children learning to tie their shoes by watching parents.

Implicit Learning

Definition

Implicit learning is learning that occurs without conscious awareness of what has been learned, often demonstrated through improved performance rather than explicit knowledge.

• Example: Learning to ride a bicycle without being able to verbalize the process.

Insight Learning

Definition

Insight learning involves a sudden realization of a solution to a problem, not based on trial-and-error or reinforcement.

• Example: Solving a puzzle by suddenly seeing the answer.

Learning: Linking to Brain Activity

Neural Pathways

Learning is associated with changes in neural pathways, including the strengthening of synaptic connections and the formation of new ones.

• Example: Long-term potentiation (LTP) is a process that enhances synaptic transmission, believed to be a biological basis for learning and memory.

Additional info: Some definitions and examples have been expanded for clarity and completeness. The table on reinforcement schedules is reconstructed for academic clarity.