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Sucuoglu, Bülbin; Demir, Seyda – Eurasian Journal of Educational Research, 2012
Problem statement: Two of the techniques used in the meta-analysis of single-case research are calculating the percentage of nonoverlapping data (PND) and the percentage of data points that exceed the median of the baseline phase (PEM). The PND is a nonparametric approach in which the researcher calculates the percentage of data points in the…
Descriptors: Foreign Countries, Autism, Pervasive Developmental Disorders, Effect Size