Answer:
Harry Harlow
Step-by-step explanation:
Contact comfort refers to the intimate care that the mothers give to their infants (including hugs, feeding, spending time playing with the infants , etc)
According to harlow, infant primates (including humans) will receive a deep sense of comfort and protection from such behavior that will benefit their mental health in the future. If they did not receive it, they tend to seek this missing care from other people when they are grown up in a more unhealthy ways.