Memory

MEMORY

MEMORY DEFINITION

  • Memory: The retention of information or experiences over time

COMPONENTS OF MEMORY

1. Encoding

  • Definition: The process of getting information into memory.   - Automatic:     - Requires no effort.   - Effortful:     - Requires attention and conscious effort.

2. Storage

  • Definition: Retaining information over time.

3. Retrieval

  • Definition: Taking information out of storage.

ENHANCING ENCODING

Elaborative Rehearsal

  • Definition: Using memory devices like imagery or mnemonics to aid in recall.   - Imagery: Using images creatively to help remember information.   - Mnemonics: Memory strategies, including:     - Chunking: Organizing items into familiar, manageable units.       - Helps with dyslexia and other learning disorders.     - Acronyms: Using the first letter of items to create a memorable word or phrase.       - Example: "Please Excuse My Dear Aunt Sally" for order of operations in math.     - Method of Loci: A mnemonic device that uses self-created imagery to remember items by associating them with physical locations.       - Example: Remembering a shopping list by visualizing items in specific places in a familiar room.

Depth of Processing

  • Definition: The deeper the processing, the better the retention. Levels of processing:   - Shallow Processing:     - Type: Structural encoding, which emphasizes physical structure.     - Example Question: Is the word written in capital letters?   - Intermediate Processing:     - Type: Phonemic encoding, which emphasizes sounds of words.     - Example Question: Does the word rhyme with "weight"?   - Deep Processing:     - Type: Semantic encoding, which emphasizes the meaning of verbal input.     - Example Question: Would the word fit in the sentence: "He met a ____ street"?

CONTEXT DEPENDENT MEMORY

  • Definition: The context in which information is learned is the best place to recall it.   - Example Data: A study showing recall differences in similar vs. different contexts.   - 40, 30, 20% of words recalled based on context.

STATE-DEPENDENT MEMORY

  • Definition: The physical or emotional state during learning influences retrieval.   - Example Data Table: Interaction between drug state at study and test showing recall rates across different states.

MOOD CONGRUENT MEMORY

  • Definition: People find it easier to remember happy events when in a happy mood and sad events when in a sad mood.

EBBINGHAUS’S FORGETTING CURVE

  • Definition: Information is forgotten following an exponential decay curve; loss occurs quickly at first, with a gradual slowdown.

  • Estimated that without review, 20-30% of information is retained.

AIDING RETRIEVAL

Distributed Practice (Spacing Effect)

  • Definition: Spacing reviews over time leads to better retention than cramming.

  • Graph: Shows increased % of data remembered with spaced repetitions.

Dual Encoding

  • Definition: Combining multiple elements (e.g., visual and auditory) during learning.   - Example: Adding pictures to notes increases encoding effectiveness.

Testing Effect

  • Definition: Quizzing oneself improves retrieval.   - Study Data: Roediger & Karpicke (2006) showing better recall after self-testing.

MULTI-STORE MODEL OF MEMORY

  • Definition: Breakdown of memory stages and duration:   - Sensory Memory: Lasts fractions of a second to several seconds.   - Short-Term Memory (STM): Can hold unrehearsed info for up to 30 seconds.

  • Magic Number: Our ability to remember 7 ± 2 items, necessitating chunking.

SHORT TERM MEMORY (STM)

MAINTENANCE REHEARSAL

  • Definition: Process by which information is repeated to maintain it in STM.

LONG TERM MEMORY SYSTEMS

Explicit Memory (Declarative)

  • Episodic Memory: Events and experiences.

  • Semantic Memory: Facts and general knowledge.

  • Explicit memory requires conscious effort to recall.

Implicit Memory (Nondeclarative)

  • Procedural Memory: Skills and muscle memory, involves unconscious retrieval.

  • Include priming and classical conditioning effects.

MEMORY ORGANIZATION

Scenarios for Memory Types

  • Schemas: Preexisting frameworks help in storing new information.   - Assimilation: Incorporating new information into existing schemas.   - Accommodation: Adjusting schemas to incorporate new information.

Hierarchical and Category Storage

  • Memory clumping into related categories and hierarchies improves recall.

SOURCES OF FORGETTING

Encoding Failure

  • Information that was never stored will result in forgetting.

Interference

  • Proactive Interference: Old information blocks new information.

  • Retroactive Interference: New information blocks old memories.

False Memories

  • Characteristic: Memories can be altered or constructed due to external aids or suggestions.

  • Example: Imagination inflation defined as increased confidence in the occurrence of imagined events.

SPECIAL CASES OF MEMORY

Flashbulb Memories

  • Memories associated with highly emotional or significant events tend to be well-remembered due to hormonal impacts.

Amnesia Types

  • Anterograde Amnesia: Inability to form new memories—commonly permanent.

  • Retrograde Amnesia: Inability to recall old memories—often recoverable.

AUTOBIOGRAPHICAL MEMORY

  • Definition: A blend of episodic and semantic memories concerning one's own life.

  • Superior autobiographical memory is a rare condition benefiting from enhanced recall ability.

ACCURACY OF MEMORY

  • Human memory is susceptible to change and distortion over time, especially before the development of certain brain functions (e.g., hippocampus for long-term storage).

  • Source amnesia refers to forgetting the origin of learned information.

TECHNIQUES TO IMPROVE MEMORY RETENTION

  • Strategies include elaborative rehearsal, spaced repetition, dual encoding, and practice testing to enhance and solidify memory creation and accessibility.

CONCLUSION

  • Recognizing that memory is a dynamic and malleable process may aid in understanding its complexities and improve learning outcomes.