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ADVANTAGES OF Hierarchical model Hierarchical, or nested, data structures are common throughout many areas of research. However, until recently there has not been any appropriate technique for analyzing these types of data. Now, with several user-friendly software programs available, and some more readable texts and treatments on the topic, researchers need to be aware of the issue, and how it should be dealt with. The goal of this paper is to introduce the problem, how it is dealt with appropriately, and to provide examples of the pitfalls of not doing appropriate analyses.(4)
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