Problem 1 How do sensory memory and shortt... [FREE SOLUTION]

Chapter 7: Problem 1

How do sensory memory and shortterm memory differ in terms of their duration?

Short Answer

Expert verified

Sensory memory lasts milliseconds to seconds; short-term memory lasts seconds to a minute.

Step by step solution

- Define Sensory Memory

Sensory memory is the initial stage of memory where information from the senses is stored very briefly. This type of memory retains sensory impressions for a very short period ranging from milliseconds to a few seconds.

- Define Short-term Memory

Short-term memory is the stage where information is stored for a few seconds to a minute. It has a limited capacity, typically holding about 7 items of information.

- Compare Durations

Sensory memory holds information for milliseconds to a few seconds, making it the briefest form of memory. In contrast, short-term memory retains information for a longer period, from several seconds to about a minute.

- Recap the Differences

Summarize the difference: Sensory memory lasts only milliseconds to a few seconds whereas short-term memory lasts for several seconds up to a minute.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Sensory Memory

Sensory memory is the very first stage of memory processing. It is where information that our senses pick up is stored for an extremely short period. This type of memory is automatic and happens without our conscious effort. It helps us to make sense of the world by retaining sensory information just long enough for us to process it.
Sensory memory can be divided into different types based on the sense involved:

Iconic Memory: Relates to visual information and lasts about 0.5 seconds
Echoic Memory: Relates to auditory information and lasts about 3-4 seconds
Haptic Memory: Relates to touch information and lasts about 2 seconds

The main role of sensory memory is to hold information long enough for it to be transferred to short-term memory.

Short-Term Memory

Short-term memory (often referred to as working memory) is a cognitive system that is responsible for temporarily holding information available for processing. It is what allows us to keep information in mind while we use it.
Short-term memory has a limited duration and capacity:

Duration: Information typically stays in short-term memory for about 20 to 30 seconds without rehearsal.
Capacity: It can hold about 7 items of information at one time, often referred to as 'the magic number 7', plus or minus 2.

Rehearsal, the process of silently repeating information, can help extend the duration of short-term memory and increase the likelihood of it being transferred to long-term memory.

Memory Duration

Memory duration is the length of time that information is retained in different stages of memory.
We can break it down across different types of memory:

Sensory Memory: Very brief, from milliseconds to a few seconds. This allows us to momentarily consider sensory information that can be processed for further use.
Short-Term Memory: Somewhat longer, about 20 to 30 seconds. It acts as a buffer, holding information temporarily while deciding to process it or dismiss it.
Long-Term Memory: Can last from minutes to a lifetime. It stores information more permanently and has a seemingly unlimited capacity.

Understanding these different durations helps highlight why we may forget some information quickly while other bits of information can last a lifetime, depending on the stage at which they are processed.

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91影视

How do sensory memory and shortterm memory differ in terms of their duration?

Short Answer

Step by step solution

- Define Sensory Memory

- Define Short-term Memory

- Compare Durations

- Recap the Differences

Key Concepts

Sensory Memory

Short-Term Memory

Memory Duration

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