by Stan Tatkin, PsyD, MFT,
A study by Nagasawa and his colleagues in Japan (2009) some years ago involving dogs and their owners found that if a dog looked into its owner’s eyes by finding the gaze first, the owner’s oxytocin levels went up. (I suspect dopamine might also be increased). However, if the owner’s gaze found the dog’s eyes first, no increase in oxytocin resulted. This finding has continued to “dog” me as I thought about infant attachment studies and adult romantic relationships. What is it about a dog, a baby, or a lover finding our eyes that leads to an increase in dopamine, oxytocin, vasopressin, or other neurochemicals related to the reward system?
During early infancy, when the newborn’s gaze is largely undirected, the catching of the mother’s gaze by the infant leads to a dopaminergic rush—a reward that is evident in the mother’s subsequent inviting vocal tone and facial expression. This...