Your eyes may offer a way to measure your stress while multitasking, according to a new study.
Previous studies on workload and productivity include physical aspects, such as how much a person walks or carries, but they do not take into account a person's state of mind.
"If your vitals are bad, then something is wrong with your body and doctors will work to figure out what's wrong with you," says Jung Hyup Kim, an assistant professor of industrial and manufacturing systems engineering in the College of Engineering at the University of Missouri.
"What about your mental health? Many people multitask, but currently there is no measurement for someone's mental well-being. However, we found that the size of a pupil could be the key to measuring someone's mental state while they multitask," Kim says.