Initially, independent samples t-tests were conducted to detect any gender differences among variables, such as birth weight, gestational period, age at testing, and assessment results. Paired samples t-tests were then performed to compare not-corrected and corrected scores for WPPSI-III and WISC-IV (both Full Scale IQ and indices). Simple correlations were performed to explore the relationships between IQ score differences (i.e., difference between not-corrected and corrected IQ scores) and birth weight, and between IQ score differences and gestation period. Lastly, a chi-square test was conducted to compare not-corrected and corrected scores in terms of the proportions of children whose scores fell within the intellectual disability range.