Unbiased writing

I have found myself reading books or papers where the writer will have a biased voice.
example: A student planning on attending college needs to talk to his advisor.

An occasional he or she is all right, but after a while it becomes too demanding, and the device becomes more important than the message. When a singular pronoun is necessary, use either the masculine or feminine consistently enough to avoid confusion.
To avoid your paper from being biased you can substitute the word.
Examples:
use actor instead of actress
businessperson instead of businessman
anchor instead of anchorman
ancestors instead of forefathers

By using this way of writing your paper is more attractive to your readers and not so biased.
http://grammar.ccc.commnet.edu/grammar/unbiased.htm