Résumé
Part I
The Participatory Prospective Analysis (PPA) Method
The philosophy of the PPA method
Methodological components
Presentation of the method
Definition of the system's limits
Identification of variables
Selection and definition of key variables
Mutual influence analysis
Interpretation of influence/dependence links
Definition of the states of variables
Building scenarios
Using scenarios
Implementing the PPA
Equipment and resources
Organizing group work
The question of experts and expertise
Part II
The PPA Method at Work: The Case of Secondary Crop Research and Development
Prospects in Asia and the Pacific
Context
Organization of the PPA
System identification
Creation of a working group and workshop organization
Process and results
Identification of key variables
Influence/dependence analysis
Building scenarios
Analysis of implications
Conclusion
Key Words: decision making, analytical methods, tools