Will is defined as the determination to exercise free choice and self-control. Will, according to Erikson, refers to a young child’s understanding that he or she can act on the world intentionally; this occurs when autonomy, shame, and doubt are in balance.
According to Wundt, Will is that aspect of humans that allows them to direct their attention anywhere they wish. Because of his emphasis on Will, Wundt's version of Psychology was called Voluntarism.