46 The form of effective communication is also related to the content of the message. Obviously, different forms of communication are required for these different functions. To use Arthur Mosher's categories cited above, mass media may be well suited to serve as an "encouraging companion" or as a stimulator of general development, but individualized instruction may be needed to provide specialized information on complicated technical questions. Another form of communication--based on socially adept group organizers and inter- action communication (described below)--may be needed to spark group activities. The need to relate the form of communication to the social and economic environment and to the content of the message has been confirmed in he Basic Village Education Project, in Guatemala. In this experimental project, various combinations of mass media (radio), farmer meetings organized by a monitor, and individual technical in- struction were tested. The results of the experiment were: ...there is no single most effective media combination for all situations. The potential effectiveness of the various media combina- tions varies with the level of development, the economic well-being, and the present and prior exposure to mass media and technical assistance. For an area relatively advanced... radio alone will be immediately used as a source of new information...In contrast, the full radio-monitor-agronomist media combination is required...in an area rating relatively low...In the traditional...areas, radio is capable of intro- ducing new agricultural ideas and reducing the fear of implementing them. However, reinforcement by agronomist and/or monitor is needed to maximize impact of radio as an information source... The Basic Village Education Project, Guatemala, Final Report (Washington, D.C.: Academy for Educational Development 1978), p. ii.