Standardization of the Neuropsychological Test of NEPSY on 3-4 Years Old Children

The current study aimed to standardize the neuropsychological test of NEPSY on 3-4 years old children. Statistical population of the study was 3-4 years old children in Isfahan city (Iran). The research sample consisted of 400 kindergarten children who were selected randomly with multiple-stage sampling method. The research instrument was the neuropsychological test of NEPSY. The data were analyzed using descriptive method for factor analysis and determining the validity and reliability. The results of factor analysis gave the following five factors: executive functions/attention, language, sensory motor functions, visuo-spatial processing, and memory and learning. Totally, 51.13% of variance was explained. The reliability coefficient for the above factors was obtained as 0.64, 0.71, 0.78, 0.67 and 0.85, respectively (P<0.001). NEPSY test can be an appropriate and valid instrument for early diagnosing neuropsychological deficits in 3-4 years old children.