Abstract
The use of the Auditory Flicker Fusion (AFF) technique to measure mental fatigue in industry is a new area of investigation. The Visual Flicker Fusion (VFF) technique, which is the predecessor to AFF, has received most of the attention of the researchers, even though the AFF technique appears to be more sensitive with less complicating variables. | This study compared the AFF frequencies of surface wiring girls to the expected change in mental fatigue during the working day. This study used an F-test to determine if any significant relationships existed between the AFF frequencies and the time-of-day or the day-of-the-week. | This investigation failed to show any significant relationship between the AFF and the time-of-day or the day-of-the-week. But it is important to note that several expected relationships were observed during this investigation which cause this conclusion to be highly questionable.