This article was take from http://www.johnankerberg.org/Articles/theological-dictionary/TD1100W3.htm
Free Will
by Dr. Norman Geisler
(from Baker Encyclopedia of Christian Apologetics, Baker Books, 1999)
Concepts of the nature of human choice fall within three categories: determinism, indeterminism, and self-determinism. A determinist looks to actions caused by another, an indeterminist to uncaused actions, and a self-determinist to self-caused actions.
Determinism
There are two basic kinds of determinism: naturalistic and theistic. Naturalistic determinism is most readily identified with behavioral psychologist B. F. Skinner. Skinner held that all human behavior is determined by genetic and behavioral factors. Humans simply act according to what has been programmed into them.