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The coverage comprehension model, its importance to pedagogy and research, and threats to the validity with which it is operationalized
|Title:||The coverage comprehension model, its importance to pedagogy and research, and threats to the validity with which it is operationalized|
|Keywords:||Text coverage model|
show 1 morevalidity
|Date Issued:||15 Apr 2021|
|Publisher:||University of Hawaii National Foreign Language Resource Center|
Center for Language & Technology
|Citation:||McLean, S. (2021). The coverage comprehension model, its importance to pedagogy and research, and threats to the validity with which it is operationalized. Reading in a Foreign Language, 33(1), 126-140. http://hdl.handle.net/10125/67396|
|Abstract:||When learners can comprehend 98% or more of the tokens within a text, the lexical difficulty of the text is unlikely to inhibit reading comprehension (Schmitt et al., 2011). This phenomenon will be referred to as the Coverage Comprehension Model (CCM). The CCM is present in countless articles that describe the percentage of tokens necessary to comprehend reading materials (e.g., Nation, 2006). Further, numerous studies operationalize the CCM to provide evidence that participants were able to comprehend reading materials (e.g., Feng & Webb, 2020) by estimating (a) the lexical difficulty of a text and (b) the lexical mastery level of a learner. However, the validity with which the CCM is operationalized is limited by the following four assumptions; (a) 26 out of 30 words on a levels test is an appropriate threshold for mastery of a 1,000-word band; (b) the word counting unit used when estimating the lexical difficulty of a text and the lexical ability of a learner is appropriate for the target learners; (c) the item format used in levels tests can appropriately capture the type of vocabulary knowledge necessary when reading; and (d) the number of items on a vocabulary levels test accurately represents the difficulty of the 1,000-word band. This paper applies the findings of research to evaluate the validity of the first two assumptions, and concludes that the validity with which the CCM is operationalized in research is limited.|
|Appears in Collections:||
Volume 33, No. 1|
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