According to the researchers, their study is the first to investigate the ability of dogs to use only auditory communication from humans to locate hidden food. The results suggest that dogs are able to use multiple senses to comprehend human communication.
In most realms of human endeavor, no one person ever stands out as clearly greater than the other greats in that field. Because so many are great, no one person ever shines brightest. Psychology is an exception -- Charles Darwin does tower over this field.