Page "Wechsler Intelligence Scale for Children" Paragraph 2

The current version, the WISC-IV, was produced in 2003 followed by the UK version in 2004.

Each successive version has re-normed the test to compensate for the Flynn effect.

Ensuring not only that the norms do not become outdated which is suggested to result in inflated scores on intelligence measures, but that they are representative of the current population ( Flynn, 1984, 1987, 1999 ; Matarazzo, 1972 ).

Additional updates and refinements include changes to the questions to make them less biased against minorities and females, and updated materials to make them more useful in the administration of the test.