As apparent in the above text, licking and grooming is a behavior performed by a rat dam or mother, in order to calm a rat pup down after being handled. The sample population included rats that were categorized into two groups, high LG or low LG.
Rats that were licked and groomed often by their parents were placed into high LG, and vise versa. The study focuses on the effects of LG and how this action will affect the pup in the short and long term as it grows into an adult. He explains the results from the experiment from which he presents, “the high-LG offspring excelled: They were better at mazes. They were more social. They were more curious. They were less aggressive. They had more self-control. They were healthier. They lived longer …