Introduction: What is Learning?
This module explores the fundamental concepts of how we acquire new behaviors and knowledge. Learning is defined as any relatively permanent change in behavior (or behavioral potential) that results from experience or practice. It's a foundational process that allows organisms, including humans, to adapt to their environments.
Learning
A relatively permanent change in behavior resulting from experience. It's an inferred process, not directly observable. Changes due to fatigue or drugs are not considered learning.
Performance
The observed behavior or action of an organism. We infer learning by observing changes in performance over time.
Habituation
A temporary change where reflex responses weaken due to continuous exposure to a stimulus. This is not considered learning as the change is not permanent.
Classical Conditioning (Pavlov)
First investigated by Ivan Pavlov, this is a process where an organism learns to associate two stimuli (S-S learning). A neutral stimulus (like a bell) becomes a signal for another stimulus (like food) that automatically produces a response. Over time, the neutral stimulus alone can elicit the response.
Key Concepts
Unconditioned Stimulus (US)
A stimulus that automatically and reflexively elicits a response. (e.g., Food)
Unconditioned Response (UR)
The natural, reflexive response elicited by the US. (e.g., Salivation to food)
Conditioned Stimulus (CS)
A previously neutral stimulus that, after being paired with the US, comes to signal its occurrence. (e.g., Bell)
Conditioned Response (CR)
The acquired response to the CS, which anticipates the US. (e.g., Salivation to the bell)
Interactive: The Process of Conditioning
Pavlov's Dog: A Step-by-Step Model
Click "Next Step" to see the process unfold.
Determinants of Conditioning
The effectiveness of conditioning depends on several factors, including the timing of the stimuli, the type of stimuli, and their intensity.
Time Relations
- Delayed: CS starts before US. Most effective.
- Trace: CS starts and ends before US.
- Simultaneous: CS and US start together.
- Backward: US starts before CS. Rarely effective.
Stimulus Type & Intensity
- Aversive: Painful stimuli (shock, noise) lead to very rapid conditioning.
- Appetitive: Pleasant stimuli (food, drink) lead to slower conditioning.
- Intensity: More intense stimuli (a louder bell, a brighter light) are more effective.
Relative Effectiveness of Timing
Operant Conditioning (Skinner)
First investigated by B.F. Skinner, this form of learning focuses on how consequences shape voluntary behavior. Organisms "operate" on their environment. Behaviors (operants) that are followed by desirable consequences (reinforcers) are more likely to be repeated.
Key Concepts
Operants
Voluntary behaviors emitted by an organism that are under its control (e.g., pressing a lever, speaking).
Reinforcer
Any stimulus or event that *increases* the probability of a desired response occurring again.
Shaping
A technique where a desired response is learned by reinforcing successive approximations (small steps) to that response.
Interactive: The Consequences of Behavior
Click on a square to learn about the four main types of consequences.
Positive Reinforcement
(Increases Behavior)
Negative Reinforcement
(Increases Behavior)
Positive Punishment
(Decreases Behavior)
Negative Punishment
(Decreases Behavior)
Select a concept from the grid above.
Schedules of Reinforcement
Reinforcement doesn't have to happen every time. The *schedule* of reinforcement drastically affects the rate of response and its resistance to extinction.
Continuous Reinforcement
Reinforcement is given *every time* the desired response occurs. This leads to fast learning but also very fast extinction.
Intermittent (Partial) Reinforcement
Responses are reinforced only *sometimes*. This leads to slower learning but produces behavior that is highly resistant to extinction (the "Partial Reinforcement Effect").
Response Patterns of Partial Schedules
Key Learning Processes
These processes occur in both classical and operant conditioning, governing how behaviors are acquired, maintained, and how they fade or spread to new situations.
Extinction
The disappearance of a learned response when reinforcement is removed (Operant) or the US no longer follows the CS (Classical).
Generalisation
Responding similarly to a new stimulus that is similar to the original conditioned stimulus (e.g., fearing all white, fuzzy objects after being scared by a white rat).
Discrimination
The opposite of generalisation. This is learning to respond differently to similar stimuli (e.g., fearing the white rat but not a white rabbit).
Spontaneous Recovery
After a response has been extinguished and a rest period has passed, the learned response may temporarily reappear.
Interactive: Extinction & Recovery
Response Strength Over Time
Complex Forms of Learning
Beyond simple conditioning, learning involves complex cognitive processes. These forms of learning often involve observation, mental representations, language, and the organization of information.
Observational Learning (Modeling)
Investigated by Albert Bandura, this is learning by observing others (models). It's also called "social learning" because we learn many social behaviors this way.
Acquisition vs. Performance
A key distinction: You can *acquire* knowledge by watching someone, but your *performance* of that behavior is influenced by seeing the model rewarded or punished.
Cognitive Learning
This approach defines learning as a change in what the learner *knows*, not just what they *do*. It focuses on internal mental processes.
Insight Learning (Kohler)
The solution to a problem appears suddenly (an "aha!" moment), not through trial-and-error. Once the insight occurs, the solution can be repeated immediately.
Latent Learning
A new behavior is learned but is not displayed until reinforcement is provided. This suggests organisms (like rats in a maze) can create a "cognitive map" (a mental representation) even without a reward.
Verbal Learning
This type of learning is specific to humans and involves acquiring knowledge through words and symbols.
Methods
- Paired-Associates: Associating a stimulus word with a response word (e.g., learning vocabulary).
- Serial Learning: Learning items in a specific order (e.g., a phone number).
- Free Recall: Learning a list and recalling items in any order.
Key Findings
- Total Time Principle: A fixed amount of time is needed to learn a fixed amount of material.
- Organisation: In free recall, people naturally "cluster" items by category (e.g., recalling "apple, pear, banana" together).
Serial Position Curve (Free Recall)
We best remember items at the beginning (Primacy Effect) and end (Recency Effect) of a list.
Concept Learning
This involves organizing objects and events into categories based on shared features (attributes) connected by a rule.
Artificial Concepts
Precise and rigid, defined by exact rules. Features are singly necessary and jointly sufficient (e.g., "a square" must have 4 equal sides and 4 right angles).
Natural Concepts
Ill-defined categories with "fuzzy" boundaries (e.g., "bird" or "tool"). A penguin is a bird, but a robin is a more typical example.
Interactive: Find the Concept
The rule is: "Red AND Square". Click all the shapes that fit the concept.
Skill Learning
A skill is the ability to perform a complex task smoothly and efficiently (e.g., driving a car, writing shorthand). It's acquired in phases.
Interactive: Phases of Skill Acquisition
Transfer of Learning
This refers to the effect that prior learning has on new learning. The similarity between the tasks is a key factor.
Positive Transfer
Prior learning helps new learning (e.g., knowing Latin helps in learning French).
Negative Transfer
Prior learning hinders new learning (e.g., driving an automatic car makes it harder to learn a manual transmission).
Zero Transfer
Prior learning has no effect on new learning (e.g., knowing history doesn't help in learning physics).
Factors & The Learner
Learning isn't just a universal process; it's deeply influenced by individual factors like motivation, biological preparedness, and cognitive styles.
Motivation
A prerequisite for learning. It can be:
- Intrinsic: Learning for its own sake (e.g., for enjoyment).
- Extrinsic: Learning to attain a separate goal (e.g., for a good grade).
Preparedness
Biological and genetic constraints. Organisms are "prepared" to learn certain associations more easily than others (e.g., it's easier to learn to fear snakes than flowers).
Learning Styles
A learner's consistent, preferred way of responding to and using stimuli. These are often debated but provide a useful framework.
Perceptual Modality
Preference for intake (e.g., Visual, Auditory, Kinesthetic).
Information Processing
How you think (e.g., Active/Reflective, Sequential/Global).
Personality Patterns
e.g., Relational (sees total picture) vs. Analytical (focuses on detail).
Learning Disabilities
A group of disorders manifested by difficulty in acquiring skills like reading, writing, or reasoning. These are inherent to the child (often from CNS issues) and are not due to a lack of intelligence.
Example: Dyslexia
A common disability where children struggle to copy letters and words, often confusing similar characters. This can also be accompanied by disorders of attention, hyperactivity, and poor motor coordination.
Applications in Therapy
Learning principles are highly effective in modifying maladaptive behaviors, habits, and fears.
Systematic Desensitisation
Used for phobias. It reverses classical conditioning by pairing the feared stimulus with a new response (e.g., relaxation) in a gradual process.
Flooding / Implosive Therapy
Treats irrational fears by exposing the person to the feared object, either in vivo (real life) or in imagination, until the fear is extinguished.
Aversion Therapy
Eliminates undesirable habits by pairing the habit (e.g., smoking) with a painful or unpleasant experience (e.g., a shock or bad taste).
Biofeedback
Uses instrumental conditioning to help people gain control over bodily functions (like heart rate or blood pressure) by providing real-time "feedback" on them.
Assertive Learning
A therapy based on learning principles used for individuals with excessive shyness and difficulties in interpersonal interactions.