When the tests are done, the lab assistant tells them that Stephanie was faster, with a typical time difference of less than one second.
In psychology, the interval between the "presentation of a stimulus" and the reaction to the stimulus is called reaction time. In simple words, the reaction time is the amount of time that an individual takes to process the presented information.
The difference of less than 1 second is due to the relation between age and information processing. It has also been noted that age does not drastically affect the time for processing information and depends more on the person. It would explain why there is extremely low difference of less than 1 second.
