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McNeish, Daniel M.; Stapleton, Laura M. – Educational Psychology Review, 2016
Multilevel models are an increasingly popular method to analyze data that originate from a clustered or hierarchical structure. To effectively utilize multilevel models, one must have an adequately large number of clusters; otherwise, some model parameters will be estimated with bias. The goals for this paper are to (1) raise awareness of the…
Descriptors: Hierarchical Linear Modeling, Statistical Analysis, Sample Size, Effect Size
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Keller, Clayton; Al-Hendawi, Maha; Abuelhassan, Hadeel – Teacher Education and Special Education, 2016
The provision of special education for students with disabilities depends upon the availability of well-qualified special educators, which, in turn, depends upon the availability and characteristics of preparation programs. In countries of the world where special education systems are still developing the capacity to provide the education that…
Descriptors: Foreign Countries, Special Education Teachers, Teacher Education, International Cooperation