An information diffusion system was designed and tested that would facilitate the diffusion of innovations on a national scale among community mental health centers. The experimental design used both written and interpersonal techniques. Combinations of the techniques were applied to three treatment groups and a control group. In addition, a number of data collection instruments were designed to assess the effectiveness of diffusion techniques. The results indicate that staff reactions to all three diffusion techniques were extremely positive. When the staff was asked to indicate their preference regarding diffusion techniques, 78.7 percent preferred interpersonal techniques, 19.2 percent preferred written techniques, and 2.1 percent cited other techniques. Moreover, requests from centers and other human service agencies for written materials far exceeded original estimates. Furthermore, feedback indicated staff would like the network to be continued and expanded. (Author/WCM)