lunes, 18 de octubre de 2010

How does memory work?

1)Explain the concept of sensory memory?
The concept of sensory memory means that you have the ability to retain a brief image of a sensory stimulus, by this is when you see an object and then it disappear, you may still have a image of the object.

2)Give an example of sensory memory?
One example of this is for example you see a Ferrari, and in a moment the car goes away, you will still have the image of that Ferrari that you saw.

3)What is the capacity of our sensory memory?
The capacity of the sensory memory can get a lot of things at a time, but it can go fairly quickly from the memory. They are two types the Iconic Memory that can go in less then 1 second, and the Echoic memory that can go in less than 4 seconds.

4) Describe the concept of short-term memory?
The concept of short term memory is when your brain is able to hold a small amount of info in your memory that can be used in a short period of time. This means that short-term memory is used in daily bases, this is when you store infromation in your memory of a simple view, and it has the capacity and can decay over a short period of time

5)What is the "magic number" as it relates to short-term memory and who conducted the experiment which established this measurement?
The magic number is the capacity to us to remeber, and this is up to 7, plus or minus 2. This was conducted in 1956 by a psychologist named George A. Miller.

6) What is chunking?
The term "chunking"means getting pieces of information to make a better use of the short term memory. This is by recoding the pieces of info to make a better image of the memory recorded. This means that memory organizes items into manegable units.

7)What has been determined to be the ideal size of "chunks" for both letters and numbers?
It has been determined to be ideal size of chunk in small pieces of memory. By this it means that 3 is the ideal number of chunking in a number or letter.

8)Which mode of encoding does short-term memory mostly rely on, acoustic or visual?
Acoustic encoding

9)Explain the duration and capacity of long-term memory
The capacity of the long term memory is unlimited because its impossible to calculate whats the limit for us to store memories . The duration is meant to be for a lifetime , they never leave your brain once they entered the long term memory.

10)Explain in detail the Atkinson-Shiffrin Model of memory.
This is a psychological model proposed in 1968 by Richard Atkinson and Richard Shiffrin as a proposal for the structure of memory.This structure has three stages.

Sensory Memory: The information enters the human information processing system via a variety of channels associated with the different senses. Perceptual systems operate on this information to create perceptions.

Short Term Memory:Information that is attended to arrives in another temporary store called short-term or working memory. The more recent term "working memory" is intended to convey the idea that information here is available for further processing.

Long term memory: Long-term memory is the relatively permanent memory store in which you hold information even when you are no longer attending to it. Information held in LTM is not represented as patterns of neural activity.

11)Identify three criticisms or limitations of the Atkinson-Shiffrin Model of memory.
The Atkinson - Shiffrin model is much too linear, and does not accommodate for the subdivisions of STM and LTM memory stores . In the case of sensory memory, the model does not acknowledge the asynchronous of the neural activity.
This model somehow deals with the forms of memory in the model, but it does not take into account which information is presented can then be seen as some form of a power check that could not be disrupted,

12)Explain the Levels of Processing Model of memory.
This theory rejects the idea of the dual store of memory . It propose that the information can be process in a lo t of ways .

13)What is maintenance rehearsal - give an example.
Is the process of repeatedly verbalizing or thinking about a piece of information. An example is like when you need the number of some place and they give it to you so you repeat it out loud again and again to remember that number .

14)What is elaborative rehearsal - give an example.
Is relating new material to material that is already familiar so it can be more easy to remember. An example might be relating a string of numbers to a phone number to memorize it more easy.

15)Who developed the Levels of Processing Model and the concepts of maintenance and elaborative rehearsal?
Fergus Craik and Robert Lockhart developed it

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