jillio
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Could you explain what you mean by top down/bottom up approach?
Whoa! That would take awhile to give you a complete explanation, but I'll do my best as it applies to this discussion. It is basically the way the brain processes stimuli and input. The concept comes from cognitive psychology.
In the case of literacy, it would be applicable to the differences say, in using a top down way of word recognition (in which the whole word is seen as a shape, not as individual letters or phonetic units) or seeing the word broken down in phonetic units. Research on the topic shows that people recognize familiar words as a complete shape, and not as individual letters or phonetic units. There have many tests designed to test this concept, and it has held true across many different scenarios. Bottom up processing would enter into the equation in the case of an unfamiliar word that could be sounded out phonetically. We may use bottom up when we see a new word in print and are trying to figure out how to pronounce it. Once we are familiar with the word, the next time we see it in print, it is processed from a top down perspective. The issue is important in teaching reading strategies, and that is the the reference was used in this particular article.