跟讀練習: Want to learn faster? Reduce cognitive load - 通過影片學習英語口語

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Hi, today I'm going to talk about cognitive load theory or cognitive overload,
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which is a new theory on learning about how the sort of intrinsic
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or even extraneous difficulty of a learning task impacts our ability to learn, to remember, to retrieve information and so forth.
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And I want to give you my perspective on this
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because I think it's quite interesting and it kind of touches on something that I've talked about before.
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In its essence, I feel that cognitive load theory is about how do you make the task easier, essentially.
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And the way you make a learning task easier as it applies to languages is to activate prior knowledge.
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In other words, if you can learn something that you kind of in a way already know, it's going to be easier to learn that.
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And if it's easier, you're going to be happier and more satisfied with the learning process, and you'll probably stay with the task.
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I've often said that language learning is a sort of a reiterative or an iterative process.
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You learn it once, you forget, you go back again.
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I've used the metaphor of my lawnmower, where if the grass of my lawn is very high, I will actually set the blaze a little higher, an inch or so higher,
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so that my first pass through the grass will be easier, and then my second pass will also be easier, and I'll have the same grass,
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but i'll have walked through the lawn twice with a little effort as opposed to pushing against
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much more resistance another example i used is cross -country skiing
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if it's snowing and you're going through tracks
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that have already been made by a skier ahead of you even
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if more snow has fallen on these tracks you're now gliding more easily it's more comfortable you're moving faster
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and so you're also taking advantage of in a way prior work
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or prior knowledge again i think a lot of these education experts have a tendency to overcomplicate things
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so they talk about the effect of cognitive overload on your short -term memory
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or working memory and retrieving and those are a lot of details
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that i don't fully understand but i can use my brain without knowing these things
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if i have a learning system and process
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that works i don't need to know in great detail how
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that all functions in my brain i don't need to know how my car works in order to drive my car.
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So one of the things that I have found is that prior knowledge, in other words, my previous exposure to a language, however imperfectly I remember that,
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however many gaps there are, it's all good.
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So if I, for example, I'm listening to a podcast in Persian and there's lots there that I don't understand,
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and I'm really only picking up certain chunks of words and phrases that I'm quite comfortable,
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that almost naturally understand, but I can't tie them all together to really understand the whole podcast, that is still good exposure.
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So that creates a sort of prior knowledge.
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Then when I go to link and I start clicking on these words to see what they mean, then I already have that first pass through,
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that first pass with a lawnmower that makes the second pass easier.
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It still doesn't guarantee that the next time I listen to it, I'm going to understand it all.
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It's all a gradual buildup through this iterative and reiterative and going back again process,
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which I think is the way to reduce the cognitive burden.
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Another sort of extraneous factor in cognitive overload is how enjoyable the task is.
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So if I am listening to something that's too difficult, that's not enjoyable.
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But on the other hand, if I'm listening to something that is of no interest to me, that's also not enjoyable.
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So as I've said before, if I'm dealing with content that is intrinsically interesting to me
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that lessens the extraneous burden of fighting to try to learn the language,
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deliberately try to learn the language from content that's of no interest or a voice that I don't like or a screechy, scratchy audio recording.
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In other words, everything that makes the task more enjoyable reduces the extraneous cognitive burden.
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Now, along the same lines we all have different tastes in
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what we like to do i'm not a fan of uh
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sort of deliberate retrieval exercises drills flashcards you name it that's not to say
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that people who like doing those things aren't going to benefit
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from them it's a matter of what people enjoy doing
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if you enjoy doing it then the extraneous sort of cognitive burden is is lessened
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so in my own case i like listening and reading
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and there is ample evidence that reading is in fact a form of retrieval exercise. In fact, it is retrieving words and phrases
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or in the case of listening sounds from a meaningful context which according to some research is more effective than
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trying to retrieve things in isolation.
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So where I'm coming from in this discussion of cognitive load is
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that it still comes down to the basic issue of trying to keep things simple and enjoyable.
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How do we encourage the learner to stay on task?
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How do we increase the likelihood that the learner will enjoy the process, the learning process?
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And in that sense, the emphasis should be the perspective of the learner rather than how teachers
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or educators can structure activities in the classroom or design textbooks or things of that nature, which introduce a level of complexity,
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which may, in fact, not contribute to lessening the cognitive load.
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Cognitive load will be lessened if the task is simpler, more straightforward, and more enjoyable.
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So as a layman, That's my reaction to this whole issue of the cognitive burden.
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Thank you for listening.

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