17
Science Connection
Mammals are warm-blooded animals. They have hair or fur.
They feed milk to their young. Humans are mammals. Dr.
Harry Harlow lived from 1905 to 1981. He was an American
psychologist. His most famous study was about monkeys
and their mothers. He worked with rhesus monkeys. These
monkeys are like humans. Harlow took the babies away from
their mothers. He did tests. He found that touch is very
important for making connections. The baby monkeys who
didn’t leave their mothers were healthier. Michael Kraus
studied basketball players. He found players who touched
each other more on the court won more games. Touch is the
main way we communicate. It’s how we feel safe. It’s how
we calm down. It’s related to trust and love. Scientists
have found that hugs have many positive benefits. Hugs
make animals and people healthier and happier. Hugs help
others connect.
