The focus in this working paper is on the process of mediation through which occupational facts/data become part of a personal educational process. Numerous points are covered: (1) the relationship between media and mediation; (2) vocational development as a goal of occupational information mediation; (3) personal responsibility for goal determination during the mediation of occupational facts/data; (4) prospects for technology and commerce in the mediation of vocational development for vocational maturity; and (5) the challenge which the new concept "mediation of vocational maturation" provides for counselors. The authors believe that a new era in vocational guidance is beginning, one during which new knowledge in vocational development and media can be effectively and advantageously controlled by computers toward the goal of mediating vocational maturation with its emphases on personal growth and self-determined choices. (TL)