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Chronological Age Calculator for Testing & Assessments
Technical reference documents covering the formulas, methodology, and data behind Chronological Age Calculator for Testing & Assessments. Use these to understand exactly how calculations are performed.
WISC-V, WAIS-IV & KTEA Age-Band Rounding Rules Explained
How the 15/16-day rounding threshold works for WISC-V, WAIS-IV, and KTEA-3 age bands — and why not every Pearson instrument rounds the same way.
Read doc →Corrected Age for Premature Infants: Full Explanation
How corrected (adjusted) age is calculated for premature infants, when it applies instead of chronological age, and when correction stops.
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