ABSTRACT
This chapter provides a detailed description of the Worker Instructions, Reasoning, Math, and Language scales and their role in enabling worker behaviors. FJA provides scales for estimating the levels of instruction, reasoning, math, and language required to carry out the behavior that produces the end result. The GED scales embrace only those aspects of education that contribute to workers reasoning development and acquisition of functional knowledge of language and mathematics. Like the Things, Data, People and Worker Instructions scales, they are ordinal hierarchies. The scales are used in the same manner as the Worker Instructions scale, namely, by comparing what is described in a task with the appropriate levels in each scale and selecting the number of the level that fits best. The Scale of Worker Instructions provides a measure of the proportions of prescription/discretion that occur in task performance.
