Is colour-blindness a factor on the WAIS–IV UK?
Individuals with colour-perception differences are a group that encompasses greater than 10% of the general population. These issues are much more common in males. We have made every effort to ensure our items, including those on the WAIS–IV UK, WISC–IV UK, WPPSI–III UK, and WASI UK, are free of bias against these individuals. Items are reviewed by colour-perception differences experts, as well as individuals with colour-perception differences, during the early stages of the test-development process. In addition, acetate overlays have been utilised so that the test developers can understand the appearance of the stimuli to individuals with various colour-perception differences. Items are also copied in black and white to check appearance to those with monochromatic colour perception. All items are also subjected to an electronic “colour-blindness” simulator, to check item appearance with every type of colour-perception difference and ensure that the intensity and saturation of colours
