Research by the Occupational and Manpower Research Division of the Air Force Human Resources Laboratory has established that task training priority is a function of task factors and that, within a specialty, training priority ratings can be duplicated mathematically from task factor ratings. Because these ratings are measured on a different scale for each specialty, this methodology cannot be generally established and applied. To overcome this limitation, a series of benchmark scales is being developed for the measurement of task factors against common frames of reference. This report establishes the concept of the scales and describes the method to be used in their development and validation. It then reports on the development phase of the scales for specialties with either an administrative or general aptitude requirement. The completed scales would have various applications. They could be used for the initial design of a training program, the validation of an existing program, or for the redesign of an existing one given new constraints such as change in course length. At all times it must be remembered that this methodology is an advanced aid to course design, always subject to human override where such can be justified. (Author/BW)