The normative group (N=1700, ages 6-96) is divided by gender and grouped by age as follows: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17-18, 19-21, 22-24, 25-29, 30-34, 35-39, 40-44, 45-54, 55-65, 66-96. It is comprised only of people without known attention, learning, neurological, or psychological problems. Many different ethnic groups from a variety of geographical areas are included in the normative sample.
If you own the IVA+Plus Test, you can view the Normative Database from the “Norms” pull down menu located in the upper left corner of the IVA+Plus Administrative Interface.
