Consolidation and Validation
Beginning in the 1940s, continuing studies in readability confirmed and expanded on earlier research. From these studies, it became obvious that readability is not something embedded in the text but is the result of an interaction between the text and the reader. On the reader's side, readability is dependent on 1. prior knowledge, 2. reading skill, 3. interest, and 4. motivation. On the side of the text, readability is affected by 1. content, 2. style, 3. design, and 4. organization.
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