University of Mohaghegh Ardabili Journal of School Psychology 22520821 10 3 2021 09 23 Diagnostic validity of Reynolds Intellectual Assessment Scale (2nd edition) in pre-school students with attention deficit-hyperactivity/impulsive disorders in Islamshahr City Diagnostic validity of Reynolds Intellectual Assessment Scale (2nd edition) in pre-school students with attention deficit-hyperactivity/impulsive disorders in Islamshahr City 120 133 1346 10.22098/jsp.2021.1346 FA F Kiyoumarsi Assistant Professor, Department of Exceptional Child Psychology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran K Kamkary Assistant Professor, Department of Psychology, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran Sh Shokrzadeh Assistant Professor, Department of Psychology and Education of Exceptional Children, Tehran Research Sciences Branch, Islamic Azad University, Tehran, Iran Journal Article 2021 11 19 The purpose of this research was to examine the diagnostic validity of Reynolds Intellectual Assessment Scale (2nd edition) in pre-school students with attention deficit-hyperactivity/impulsive disorders in Islamshahr City. The population included pre-school students of Islamshahr city who came to counseling centers. The sample consisted of 120 pre- school students with 60 students with attention deficit-hyperactivity/impulsive disorders who were selected through targeted sampling and 60 normative students who were selected by systematic random sampling. The research is a narrative study examining diagnostic validity as a psychometric attribute. In order to analyze the data, after descriptive analyses, through scatter plot (with emphasis on Davis) and confidence intervals, attention deficit-hyperactivity/impulsivity of the Reynolds Intellectual Assessment Scale (2nd edition) was examined. The findings indicated that the scale of "fluid intelligence" and "processing speed" are the most important diagnostic criterion for attention deficit-hyperactivity/impulsive; therefore, the second version of the Reynolds Intelligence Assessment Scale has a diagnostic validity and can predict students with attention deficit-hyperactivity/impulsive disorders. The purpose of this research was to examine the diagnostic validity of Reynolds Intellectual Assessment Scale (2nd edition) in pre-school students with attention deficit-hyperactivity/impulsive disorders in Islamshahr City. The population included pre-school students of Islamshahr city who came to counseling centers. The sample consisted of 120 pre- school students with 60 students with attention deficit-hyperactivity/impulsive disorders who were selected through targeted sampling and 60 normative students who were selected by systematic random sampling. The research is a narrative study examining diagnostic validity as a psychometric attribute. In order to analyze the data, after descriptive analyses, through scatter plot (with emphasis on Davis) and confidence intervals, attention deficit-hyperactivity/impulsivity of the Reynolds Intellectual Assessment Scale (2nd edition) was examined. The findings indicated that the scale of "fluid intelligence" and "processing speed" are the most important diagnostic criterion for attention deficit-hyperactivity/impulsive; therefore, the second version of the Reynolds Intelligence Assessment Scale has a diagnostic validity and can predict students with attention deficit-hyperactivity/impulsive disorders. https://jsp.uma.ac.ir/article_1346_db861c819d2325361d4d99d1fe3f4b86.pdf