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This study aimed at investigating the effectiveness of a training program based on discrete trials on children with autism. The sample of this study consisted of eight children with autism. To achieve the purpose of this study, researchers implemented the Language Behavioral Evaluation Scale prior to and after the training program in order to assess participants’ improvement. Following hypotheses testing and data analyses using Wilcoxon test and Z score, the study revealed that there were significant differences in averages of ranks in chronological gaps with children prior to and after the implementation of the training program. These differences were found in areas of movement modeling, matching and receptive naming. However; there were no significant differences in areas of oral imitating and expressive naming.