Power and speed: their influence upon intelligence test scores

Abstract

It is claimed that a high correlation between scores on the same test before and after doubling the time limit does not necessarily show that it is chiefly a speed test, especially if the subjects have time to try all the items. It is suggested that if a test is given with a time limit and again without, and there is a high correlation, it is primarily a test of power. The Dearborn Group Test, Series II, Examination C, was given to 100 children under these conditions and a correlation of 0.88 was obtained. (PsycINFO Database Record (c) 2016 APA, all rights reserved)