Protonorms to norms conversion table

© January 2009 Paul Cooijmans

Protonorms are generalized raw scores that allow comparison between scores on all of the tests, but do not contain information as to where that score stands in any population; they are not standard scores or quantiles.

I.Q.s are ideal standard scores on a scale with 15 points per standard deviation, where the mean of the adult Western population is set at 100. The term "I.Q." is reserved for tests with a mixture of item types; for tests with only one item type, the term "Standard score" is used rather than "I.Q.", to stress the fact that such tests are less good indicators of general intelligence. A report on the current norming of protonorms to proportions outscored and I.Q.s is Adjustment of the protonorms to norms conversion.