MEMORY: DEFINITION AND IMPORTANCE
- Memory is the power or process of reproducing or recalling what has been
learned and retained, allowing individuals to retrieve this information at a later
time (Squire, 2009).
- Memory is essential for all aspects of life. Without memory of the past, we
cannot function in the present or plan for the future.
TYPES OF MEMORY:
Memory includes both:
- Conscious recollections = Facts and experiential details people intentionally
recall.
- Ingrained knowledge = Information that surfaces without effort or awareness.
PSYCHOLOGICAL STUDY OF MEMORY
Memory has been a central focus in psychology for over 100 years.
Early studies in psychology focused on memory, with Hermann Ebbinghaus being
one of the pioneering researchers.
HERMANN EBBINGHAUS AND HIS RESEARCH ON MEMORY (1885)
Research Methods: Ebbinghaus used himself as the subject, memorizing and
recalling hundreds of nonsense syllables—meaningless combinations of letters
such as "teg" or "bom".
Key Findings:
- Forgetting Curve
Ebbinghaus found that we forget newly learned material rapidly at first, but the
rate of forgetting slows down over time.
- Distributed vs. Massed Practice
He discovered that distributed practice (spreading out memorization efforts
over time) is more effective than massed practice (attempting to memorize all
at once).
NONSENSE SYLLABLES IN MEMORY RESEARCH
Nonsense syllables are non-word combinations of letters that do not have any
meaning. They are commonly used in memory research to study learning and
recall without the influence of prior knowledge or associations.
TYPES OF NONSENSE SYLLABLES
- CVC Trigram
Structure: Consonant–Vowel–Consonant (e.g., "teg", "bom")
Most commonly used by researchers like Hermann Ebbinghaus.
,- CCC Trigram
Structure: Consonant–Consonant–Consonant (e.g., "trg", "bmn")
Less common due to lack of pronounceability.
- Bigram
Structure: Two-letter combination (e.g., "ze", "ku")
May be easier to remember due to simplicity.
- Quadragram
Structure: Four-letter combination (e.g., "blon", "trik")
Can vary in complexity and difficulty.
PROCESSES OF MEMORY
Memory is a complex cognitive function that involves the ability to preserve and
recover information. Psychologists have identified three distinct processes that
make up the memory system:
- Encoding
The process of transforming sensory input into a form that the brain can
understand and store. When you read a phone number, your brain converts the
visual information into a mental representation.
- Storage
The process of retaining encoded information over time.
Remembering the name of a childhood friend years after last seeing them.
- Retrieval
The process of accessing and bringing stored information into conscious
awareness.
Recalling a fact during an exam or remembering where you left your keys.
MEMORY IS NOT FLAWLESS
Human memory is fallible; it does not always operate perfectly. People sometimes
forget or misremember information. In some cases, information may never be
properly encoded into memory, which prevents it from being stored or retrieved
later (Morgan et al., 1993).
, ATKINSON & SHIFFRIN MODEL OF MEMORY (1968)
Also known as the Modal Model of Memory, this influential theory compares
human memory to computer systems. It emphasizes three core processes:
Encoding, Storage, and Retrieval—essential tasks for both human and computer
memory systems.
1)Encoding = The process of taking in information from the environment and
transforming it into a form that can be stored in the brain.
Types of Encoding:
- Visual Encoding: Converting visual images into mental representations.
E.g., remembering a face or a diagram.
- Acoustic Encoding: Encoding of auditory information.
E.g., remembering a tune or spoken words.
- Semantic Encoding: Encoding based on meaning, context, or concepts.
E.g., remembering facts, ideas, or definitions.
- Tactile Encoding: Processing information through the sense of touch.
E.g., recalling how a texture felt.
- Organizational Encoding: Structuring information into categories or
sequences.
E.g., grouping items in a grocery list.
- Elaborative Encoding: Linking new information to existing knowledge to
enhance understanding.
E.g., relating a new word to a personal experience.
2)Storage = The process of retaining encoded information over time, creating a
lasting memory trace.
Stages of Storage:
- Sensory Memory
Briefly stores sensory input (a few seconds).
Types: Iconic Memory (Visual input) & Echoic Memory (Auditory input)
- Short-Term Memory (STM)
Temporary storage for information currently in use.
Lasts about 30 seconds.
- Memory is the power or process of reproducing or recalling what has been
learned and retained, allowing individuals to retrieve this information at a later
time (Squire, 2009).
- Memory is essential for all aspects of life. Without memory of the past, we
cannot function in the present or plan for the future.
TYPES OF MEMORY:
Memory includes both:
- Conscious recollections = Facts and experiential details people intentionally
recall.
- Ingrained knowledge = Information that surfaces without effort or awareness.
PSYCHOLOGICAL STUDY OF MEMORY
Memory has been a central focus in psychology for over 100 years.
Early studies in psychology focused on memory, with Hermann Ebbinghaus being
one of the pioneering researchers.
HERMANN EBBINGHAUS AND HIS RESEARCH ON MEMORY (1885)
Research Methods: Ebbinghaus used himself as the subject, memorizing and
recalling hundreds of nonsense syllables—meaningless combinations of letters
such as "teg" or "bom".
Key Findings:
- Forgetting Curve
Ebbinghaus found that we forget newly learned material rapidly at first, but the
rate of forgetting slows down over time.
- Distributed vs. Massed Practice
He discovered that distributed practice (spreading out memorization efforts
over time) is more effective than massed practice (attempting to memorize all
at once).
NONSENSE SYLLABLES IN MEMORY RESEARCH
Nonsense syllables are non-word combinations of letters that do not have any
meaning. They are commonly used in memory research to study learning and
recall without the influence of prior knowledge or associations.
TYPES OF NONSENSE SYLLABLES
- CVC Trigram
Structure: Consonant–Vowel–Consonant (e.g., "teg", "bom")
Most commonly used by researchers like Hermann Ebbinghaus.
,- CCC Trigram
Structure: Consonant–Consonant–Consonant (e.g., "trg", "bmn")
Less common due to lack of pronounceability.
- Bigram
Structure: Two-letter combination (e.g., "ze", "ku")
May be easier to remember due to simplicity.
- Quadragram
Structure: Four-letter combination (e.g., "blon", "trik")
Can vary in complexity and difficulty.
PROCESSES OF MEMORY
Memory is a complex cognitive function that involves the ability to preserve and
recover information. Psychologists have identified three distinct processes that
make up the memory system:
- Encoding
The process of transforming sensory input into a form that the brain can
understand and store. When you read a phone number, your brain converts the
visual information into a mental representation.
- Storage
The process of retaining encoded information over time.
Remembering the name of a childhood friend years after last seeing them.
- Retrieval
The process of accessing and bringing stored information into conscious
awareness.
Recalling a fact during an exam or remembering where you left your keys.
MEMORY IS NOT FLAWLESS
Human memory is fallible; it does not always operate perfectly. People sometimes
forget or misremember information. In some cases, information may never be
properly encoded into memory, which prevents it from being stored or retrieved
later (Morgan et al., 1993).
, ATKINSON & SHIFFRIN MODEL OF MEMORY (1968)
Also known as the Modal Model of Memory, this influential theory compares
human memory to computer systems. It emphasizes three core processes:
Encoding, Storage, and Retrieval—essential tasks for both human and computer
memory systems.
1)Encoding = The process of taking in information from the environment and
transforming it into a form that can be stored in the brain.
Types of Encoding:
- Visual Encoding: Converting visual images into mental representations.
E.g., remembering a face or a diagram.
- Acoustic Encoding: Encoding of auditory information.
E.g., remembering a tune or spoken words.
- Semantic Encoding: Encoding based on meaning, context, or concepts.
E.g., remembering facts, ideas, or definitions.
- Tactile Encoding: Processing information through the sense of touch.
E.g., recalling how a texture felt.
- Organizational Encoding: Structuring information into categories or
sequences.
E.g., grouping items in a grocery list.
- Elaborative Encoding: Linking new information to existing knowledge to
enhance understanding.
E.g., relating a new word to a personal experience.
2)Storage = The process of retaining encoded information over time, creating a
lasting memory trace.
Stages of Storage:
- Sensory Memory
Briefly stores sensory input (a few seconds).
Types: Iconic Memory (Visual input) & Echoic Memory (Auditory input)
- Short-Term Memory (STM)
Temporary storage for information currently in use.
Lasts about 30 seconds.
