Multidimensional Scaling of an Aircraft Handling Rating Scale

The items of the Cooper aircraft handling rating scale wore submitted to test pilots who judged how far apart the items should bo on the scale. The resulting single dimension scaling of the items does not give an equal interval scale. Analysis of the responses by different pilots indicates that problems arise in comparing ratings given by different users of tho scale. Action to modify the scalo is suggested but this is not proposed as a complete resolution of the problems raised.