CHAPTER 49:

"How do people become deaf?"

This chapter is filled with information that explains the different levels of deafness. I feel that this is a great chapter for people who are seeking information on deafness because it explains each category of deafness. For example, congentially deaf and adventitiously deaf. These "categories" go even more in depth, Adventitious deafness is someone who becomes deaf after birth. Adventitious deafeness can be either prelingual which occurs the first three years of a childs life and postlingual which occurs after the age of three. It doesnt stop here though, postlingual deafness gets divided into more detail. Postlingual deafness is now subdivided into childhood deafness, pre-vocational deafness, or post-vocational deafness which all vary with different ages.
The more I read this chapter I couldnt put it down, I still am researching more information on each category. Prior reading this chapter I didnt realize that there was so many different classification within deafness. Also, I thought that deafness was hereditary for the most part but now I know there are more underlying factors that I did not even take into account.


Interesting Fact: More males than females are born-deaf and early-deafened, but since women tend to outlive men, there are more late-deafened elderly women than men.