Human Memory

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Explore the fundamentals of human memory, its types like sensory, short-term, working, and long-term memory, and their functions. Delve into the characteristics of short-term memory, such as its limited capacity and the concept of chunking. Understand long-term memory's vast capacity and semantic organization. Learn about tools like the Wechsler Memory Scale for assessing memory and the significance of memory research in cognitive psychology.

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Human memory is crucial for cognitive tasks such as ______, problem-solving, and remembering personal experiences.

language comprehension

Characteristics of sensory memory

Acts as a buffer for stimuli, very brief duration

Difference between STM and working memory

STM holds info temporarily; working memory manipulates info for cognitive tasks

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Characteristics of Short-term Memory

Short-term memory is characterized by its limited capacity, typically holding about 7 items, as suggested by Miller's 1956 research. This capacity can be somewhat expanded through the process of "chunking." STM is often encoded acoustically, and its duration without rehearsal is short, usually around 20 seconds, as demonstrated by Peterson and Peterson in 1959. The fragility of STM highlights the importance of rehearsal for information retention.

Understanding Long-term Memory

Long-term memory boasts a seemingly limitless capacity, supported by the brain's extensive network of neurons. It is primarily organized semantically, meaning based on meaning rather than sound, as evidenced by research on memory confusion with semantically similar stimuli. The duration of LTM can be very long, with some memories persisting for decades. However, the stability of these memories can be affected by factors such as interference, decay, and retrieval failure.

Assessing Memory in Research Settings

Measuring memory presents unique challenges due to its abstract nature. Researchers employ various methods, such as recall tests, recognition tasks, and priming experiments, to evaluate memory performance. These methods allow for the assessment of how well individuals can retrieve information, recognize previously encountered stimuli, and process information that has been subtly suggested or primed.

Memory Assessment Tools and Their Uses

To evaluate memory, psychologists utilize tests like the Wechsler Memory Scale (WMS) and the Wechsler Adult Intelligence Scale (WAIS), which measure different memory functions in adults, including immediate and delayed recall. For children, the Wechsler Intelligence Scale for Children (WISC) and the Wechsler Preschool and Primary Scale of Intelligence (WPPSI) assess aspects of working memory. These tools are crucial for diagnosing memory impairments and understanding memory performance in various populations.

The Importance of Memory Studies

Research into human memory is essential for comprehending cognitive processes. By investigating the nature of different memory systems, their encoding mechanisms, and retention capabilities, psychologists can better understand how information is processed and stored. Advances in memory assessment techniques have significantly contributed to our knowledge of memory and its impact on daily life. This research is not only academically valuable but also has practical implications for diagnosing and treating memory disorders.

Human Memory

Concept Map

Summary

Outline

Human Memory

Encoding

Sensory Memory

Short-term Memory (STM)

Working Memory

Storage

Long-term Memory (LTM)

Retrieval

Process

Factors Affecting Retrieval

Types of Memory

Sensory Memory

Short-term Memory (STM)

Working Memory

Long-term Memory (LTM)

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