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Psychology Lecture 31.docx

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Steve Joordens

Psychology Lecture 31 (Chapter 8) All of our sensory system has a buffer that holds information a little longer to allow us to switch between the systems and overlap sensory experiences. Working memory is the beginning of real memory system, but is not the real system. The more you can hold in your working memory the more successful you are (they are also seen as more intelligent). For mute people, they use their finger (which they use for signal) to repeat the information, like we do in our heads. Slide 17: Working memory is fragile, but how long can information stay and how much of the rehearsal is needed? It’s basically about how much distraction you can handle when rehearsing? The experiment was to give you string of information that do not make sense to you (as in, you can’t make relations to the items to make it easier to remember), and also add distractions when you are remembering them. Ex: words and numbers in a row. If you let the person retell immediately, they can get about 90% right, but after some time gap the percentage drops. Why does it go out of working memory? Slide 18: One possibility- decay: where the information just dissipates. However, this one was debated, because nothing decays. Conveyor/bouncer notion- when something new comes into the mind, the other one get pushed out. That’s because there’s a limited space in which the information is held. There will be a list of items, and there will be many that start with B. Each time a B-word comes, you have to state the previous B word. The longer the distance is between the B words, the more difficult it is to recall. If you use the graph, you could see the lines in which the time represents the time that is passed between the words. If it’s decay over time, then there should be a faster rate over time. However, the graph doesn’t indicate this, since both take the same rate. Therefore this should support the conveyor belt theory. Slide 19: Miller discussed on the capacity of the working memory. He gave the person a list of items, and asked them to recall them after some times (this is usually an average of seven). The number of items that is remember is highly correlated to success in life. The working memory system is used to solve problem, so people who can bring more information in a certain time would therefore
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