Unlike sight, training of hearing is useful and is welcomed on the first month of life.
For development of acoustical and speech perception of a toy of the child have to be sounding.
Also communication with the child is of great importance.
In the course of leaving talk to the little man from the very first days of his life: comment on the actions, call things.
For example, at change of pampers it is possible to tell: And now we will remove pampers.
It already dirty..