Learning Memory

Avoidance learning occurs when a subject learns to perform a specific behavior to prevent an unpleasant or harmful stimulus. For example:

• Example: A person may learn to leave home earlier to avoid traffic jams (noxious stimulus).
• Key aspect: Part of operant conditioning, where behaviors are strengthened through negative reinforcement.

Additional related learning concepts:

• Observational Learning: Learning by watching others (e.g., modeling).
• Cathartic Learning: Not a recognized psychological term.
• Insight Learning: Involves sudden realization or problem-solving (“aha” moments).

Proactive interference occurs when older memories or knowledge interfere with the ability to learn or recall new information. For example:

• Example: Learning a new phone number may be harder if the old one keeps coming to mind.
• Significance: Common in memory research, it highlights the competition between old and new information in the brain.

Additional related terms:

• Interpolation: In mathematics, estimating values between two known points.
• Interlocution: Conversation or dialogue.
• Interaction: The reciprocal influence of factors.

Retrieval cues are triggers or hints that help recall information from long-term memory. They can be:

• External: For example, seeing a photograph might help recall a specific memory.
• Internal: For example, an emotional state can trigger related memories.

Example: Smelling a familiar perfume might remind you of a specific event or person. Retrieval is easier when the cues at encoding and recall are similar, a concept known as the principle of encoding specificity.

Additional related terms:

• Retrieval Errors: Failures to retrieve information.
• Elaborative Cues: Not a recognized term in memory research.
• Subjective Errors: Errors influenced by personal bias or perception.

Stimulus discrimination is the process by which an organism learns to respond to a specific stimulus (e.g., doorbell) while ignoring other similar stimuli (e.g., phone ring). This demonstrates the ability to differentiate between stimuli based on their distinct characteristics.

• Example: A cat’s meowing behavior is triggered only by the sound of the doorbell, not by other similar sounds like a phone ring.
• Significance: Indicates precise learning and response to specific stimuli.

In a fixed ratio schedule, reinforcement is delivered after a set number of responses. For example:

• Example: An FR-10 schedule means reinforcement is provided after every 10th response.
• Response pattern: Often results in high response rates.
• Post-reinforcement pause: Includes a brief pause in responding after each reward.

Learning refers to a relatively permanent change in behavior or behavioral potential due to experience.

Performance:

• Definition: The observable expression of what has been learned.
• Variability: Performance can vary due to factors such as motivation, fatigue, or external conditions.
• Distinction: While learning reflects an internal change, performance represents its outward demonstration.

Classical conditioning occurs when an organism learns to associate two stimuli.

Example:

• Unconditioned stimulus (UCS): The snake bite causes fear (unconditioned response).
• Conditioned stimulus (CS): The location near the river becomes associated with the snake bite.
• Conditioned response (CR): The location elicits fear through association.

This demonstrates how classical conditioning links environmental stimuli to emotional responses.

In classical conditioning, extinction occurs when the conditioned stimulus (CS) is presented without the unconditioned stimulus (UCS) repeatedly. Over time, the conditioned response (CR) diminishes as the association weakens.

• Example: If a bell (CS) is rung but no food (UCS) follows, the salivation (CR) decreases.

B. F. Skinner, a leading figure in behaviorism, introduced operant conditioning, where reinforcement plays a central role in shaping behavior. Reinforcement refers to any event that strengthens or increases the likelihood of a behavior.

• Positive reinforcement: Involves adding a rewarding stimulus (e.g., praise, food) to encourage a behavior.
• Negative reinforcement: Involves removing an aversive stimulus (e.g., reducing loud noise) to encourage a behavior.
• Key distinction: Unlike punishment, which aims to reduce behaviors, reinforcement focuses on promoting desirable behaviors by associating them with favorable outcomes.

Attention plays a fundamental role in memory formation, particularly during the encoding phase.

Key Points:

• Function: By focusing cognitive resources on specific information, attention ensures that important details are processed more deeply and effectively.
• Impact on memory: Deep processing increases the likelihood of successful encoding into long-term memory.
• Without attention: Information is less likely to be retained or retrieved later, as the brain cannot allocate sufficient resources to encode it meaningfully.

Short-term memory (STM), also referred to as working memory, is the memory system responsible for temporarily holding and processing information.

Characteristics:

• Duration: Typically lasts 20-30 seconds.
• Capacity: Can hold around 7±2 items at a time.

Example: If an address is not rehearsed or actively transferred to long-term memory, it is likely to decay rapidly, explaining why you cannot recall it three minutes later.

Memory systems are categorized based on their function and characteristics:

• Procedural Memory (A): Refers to memory for skills and actions, such as riding a bicycle (III).
• Sensory Memory (B): Associated with the brief storage of sensory impressions (IV).
• Semantic Memory (C): Includes our understanding of general knowledge, facts, and concepts (I).
• Episodic Memory (D): Encompasses personal events and experiences (II).