An experiment to evaluate audio-visual instructions about parts position in an assembling task

This paper examines an effect of parts position instructions in an assembling task where the number of the parts is too large to memorize their storage location. Hypothesizing that an instruction of the parts position enhances the work efficiency and reduces the workload, we attempt to design an experimental method to demonstrate its validness. In this experiment using educational blocks, a visual instruction is given by illuminating the parts space and an auditory instruction is provided by voicing the part space address. Six participants' experiments will show that the visual instruction significantly shortens not only the searching time but also one of the efficiency assessments, the assembling time, and tends to decrease the workload evaluated with NASA-TLX.