Classical and Operant Conditioning, Latent, Insight, and Observational Theories

Foundations and Definitions of Learning

Learning Defined: Learning is formally defined as a change in behavior based on experience.
The Learning Curve: This refers to any graphic representation used to illustrate the process of learning. - Typical Shape: The curve is typically "negatively accelerated," indicating that humans do not learn at a constant rate. - Acquisition: This is the first steep upward slope of the learning curve. It represents the portion of the learning process during which there is a consistent increase in responsiveness and the resulting change has a certain level of permanence.
The Forgetting Curve: Developed by Hermann Ebbinghaus, this principle posits that humans do not forget at a constant rate. - Pattern of Loss: There is a sharp drop in retention immediately following the learning event, which is then followed by a slow, gradual loss of the material over time.

Types of Learning

Educational psychology identifies several distinct types of learning: - Classical conditioning - Operant conditioning - Latent learning - Human insight - Observational learning

Classical Conditioning (Pavlovian Conditioning)

Definition: A type of learning where an involuntary response, which is naturally elicited by a specific stimulus, comes to be elicited by a different, formerly neutral stimulus.
Ivan Pavlov’s Classic Experiment: This process involves pairing a neutral stimulus with an unconditioned stimulus to create a conditioned response. - Key Variables: - Unconditioned Stimulus (UCS): A stimulus (e.g., food in mouth) that naturally and automatically triggers a response. - Unconditioned Response (UCR): The unlearned, naturally occurring response (e.g., salivation) to the UCS. - Neutral Stimulus: A stimulus (e.g., a tone) that initially produces no specific response related to the behavior being studied. - Conditioned Stimulus (CS): An originally neutral stimulus that, after association with an UCS, comes to trigger a conditioned response. - Conditioned Response (CR): The learned response to a previously neutral (but now conditioned) stimulus.
The Conditioning Process: - Before Conditioning: The UCS (food) produces the UCR (salivation). The neutral stimulus (tone) produces no salivation. - During Conditioning: The neutral stimulus (tone) is presented just before the UCS (food). The UCS continues to produce the UCR (salivation). - After Conditioning: The neutral stimulus now produces the conditioned response (salivation) on its own, thereby becoming the Conditioned Stimulus (CS).
Real-World Example (Workplace): - Before: A boss's criticism (UCS) leads to tension or high blood pressure (UCR). - Conditioning: Anything related to the boss, such as the office, the job, or co-workers (Neutral Stimuli), is paired with the criticism (UCS). - After: Environmental cues like the office or co-workers (CS) lead to tension and high blood pressure (CR).
The Garcia Effect: This is a specific form of conditioned taste aversion. An organism avoids a particular food because of an aversion response to its taste or smell. - Duration: Unlike many other forms of conditioning, this can be formed after just a single consumption of a novel food.

Stimulus Generalization and Discrimination

Generalization: The tendency to give the same response to different but similar stimuli. - Examples: Pigeons pecking at disks of various colors; humans dating people who share a common mode of dress.
Stimulus Discrimination: The process of learning to respond only to a stimulus that is identical to the original conditioned stimulus. - Example (Little Albert): In his study, Little Albert would fear only the furry white rat. He did not exhibit fear toward masks, coats, or dogs.

Behavioral Changes and Timing in Conditioning

Habituation: A decrease in response to a stimulus following repeated presentations. For instance, a novel sound in one's environment draws attention initially, but the attention fades as the sound continues.
Dishabituation: The restoration to full strength of a response that had previously become weakened through habituation.
Order of Presentation (Timing): - Backward conditioning: The reward (UCS) precedes the stimulus (CS). - Trace conditioning: A period of time exists between the presentation of the stimulus and the delivery of the reward. - Simultaneous conditioning: The stimulus occurs at the exact same time as the reward. - Delayed conditioning: The reward is presented only toward the end of the stimulus duration.

Maintaining and Breaking Conditional Associations

The Key to Classical Conditioning: The core is association, or forming a connection between a stimulus and a response. These associations do not need to be permanent.
Extinction: The weakening of the conditioned response through the repeated presentation of the CS without the UCS.
Counterconditioning: A process where a second, incompatible response is conditioned to an already conditioned stimulus.
Desensitization: The conditioning of a relaxation response to a stimulus that once evoked anxiety.
Spontaneous Recovery: The occurrence of a previously extinguished response even after extinction has been accomplished. - Example: After dogs learn that a bell no longer represents food, they may still occasionally drool when they hear the bell sound.

Operant Conditioning

Origins: Based on early 20th-century experiments by Edward Thorndike.
Definition: The shaping of a person’s behavior through the use of positive reinforcement to strengthen desirable behavior and punishment to discourage undesirable behavior.
Thorndike’s Law of Effect: Behavior that is consistently rewarded will be ‘stamped in’ as learned behavior, while behavior that brings about discomfort will be ‘stamped out.’ This is also known as the ‘Principle of Reinforcement.’
Successive Approximations (Shaping): Training complex behaviors by rewarding small parts or sequential bits of the target behavior, building toward the total behavior. - Example: Training tigers to jump through flaming hoops.
Tools of Operant Conditioning: - Reinforcement: A reward presented after a behavior to increase the likelihood that it will be repeated. - Positive Reinforcement: Any event whose presence increases the likelihood of a recurring behavior. - Negative Reinforcement: Any event whose reduction or termination increases the likelihood that a behavior will recur. - Punishment: Any event whose presence decreases the likelihood that an ongoing behavior will occur.
Types of Reinforcers: - Primary Reinforcers: Intrinsically rewarding items where the value does not need to be learned (e.g., food, water, sex). - Secondary Reinforcers: Items that have no intrinsic value but acquire sense of reward through association with primary reinforcers (e.g., money).

Schedules of Reinforcement

Continuous Reinforcement: Reinforcement provided every time the response is made (e.g., coins in a vending machine).
Fixed-ratio schedule: Reinforcement after a fixed number of responses (e.g., being paid per 100 dresses sewn).
Variable-ratio schedule: Reinforcement after a varying number of responses (e.g., slot machines or a car salesman making a sale).
Fixed-interval schedule: Reinforcement provided after a fixed amount of time has elapsed (e.g., a salaried paycheck).
Variable-interval schedule: Reinforcement of the first response after varying amounts of time (e.g., collecting homework at random times; watching a football game waiting for a touchdown).

Advanced Operant Concepts and Limitations

The Premack Principle: Identified by David Premack, this suggests identifying what is reinforcing for a subject and using it to reinforce behaviors the subject is unlikely to perform voluntarily. - The Grandmother Clause: An example where a grandmother promises her grandchild she will play in the sandbox with him if he finishes his asparagus.
Overjustification: The phenomenon where reinforcing a behavior an individual is already disposed to perform may actually discourage the subject from continuing the behavior once the reward is removed. - Example: Children in reading programs who are rewarded for reading might read less once the reward is taken away.
Behavior Modification and B.F. Skinner: Skinner was a major proponent of operant conditioning but did not recommend punishment due to the risk of negative outcomes. He favored behavior modification, which focuses on reinforcement.
Limitations of Punishment: - Punishment stops a behavior but does not teach a desired alternative. - Physical punishment can suggest that inflicting pain on others is justifiable. - Learned Helplessness: Generated by punishment without a clear cause. - Superstitious Behavior: Promoted by reinforcement without a clear cause.

Latent Learning, Insight, and Observational Learning

Latent Learning: Learning that is not immediately reflected in a change of behavior. - Research: In 1930, Honzik & Tolman found that rats learn even without rewards. - Cognitive Maps: Latent learning is believed to be stored as a mental image or cognitive map that can be recalled when needed.
Human Insight: The sudden ‘coming together’ of the elements of a situation so that the most efficient path or solution is instantly clear (the ‘Eureka!’ moment). - Characteristic: Suggests learning is not always a smooth, steady path. - Research: Wolfgang Kohler’s work with chimpanzees during WWI.
Observational Learning: Learning by watching others, rather than through direct conditioning. - Theories: We learn aggression, concern for others, and behaviors by witnessing vicarious reinforcement and punishment. - Proponent: Albert Bandura is the foremost proponent of this theory. - Examples: - Baby monkeys watching their mothers knock food out of a tree with a stick and then mimicking the behavior. - First-time patrons at a Japanese restaurant observing other guests taking off their shoes and sitting on the floor, then doing the same.