While reading chapter 10 of the textbook I thought the part about social development in infants and children was interesting. It talked about how at first infants are very interested in other people's faces and tend to look at faces more then anywhere else. Very soon after birth children will be happy with complete strangers and don't mind who they are with. As they age and get to around the 8 month mark they may scream or cry when approached by a stranger which is known as stranger anxiety.
Another thing that is interesting about infant social development is the large differences in how infants react to the same things. Some infants are very happy and adapt to whatever they are presented with. Other infants are difficult and tend to be fussy and are frustrated easily. Another group of infants are upset at first but when the same thing is presented over and over they get used to it and eventually they don't really mind the stimuli at all.
This difference in social reactions is very interesting to me. I never knew that babies reacted so differently to the same things. Another thing I realized is this stage is very important in someone's life because the babies are constantly looking at their parents and are heavily influenced by how they act and if they are happy often or upset about something.