Your nose heats up when you're lying, a phenomenon dubbed the "Pinocchio effect".Photo / Thinkstock
Your nose gives away when you're lying - not by growing like Pinocchio's, but by increasing in temperature, according to a new study.
Spanish researchers used thermographic cameras to measure the changes in participants' body temperature during different emotions.
Emilio Gomez Milan and Elvira Salazar Lopez, from the University of
Granada's Department, found that when a mental effort is made (performing difficult tasks, being interrogated on a specific event or lying) facial temperature changes.
When participants told a fib, researchers found the temperature around the nose and in the orbital muscle in the inner corner of the eye rose.
They dubbed the phenomenon the "Pinocchio effect", after the fictional character whose nose grew whenever he didn't tell the truth.
