Through his research he successfully shifted focus from a behavioral perspective, which was the dominant approach at the time, to a developmental one. It showed that tactile comfort was more important in forming attachment than simply feeding the baby, which was evident as each monkey preferred the cloth mother. Furthermore, further research has shown that contact with others is necessary to develop. After keeping the monkeys in isolation, it was clear that they could not function normally in society and were being bullied. This shows that children need contact with others, which suggests that daycare is beneficial as children become regular