The CTONI-2 features all new normative data collected throughout 2007 and 2008.
The test was normed on a large representative national sample of 2,827 individuals. Reliability
The normative data was stratified by age. The reliability coefficients of its composite are mostly in the .90s with a few in the high .80s. It correlates with most well known intelligence testing in the high .70s. Back to the top