Jones, C.

This paper focuses on matrices, ranking and scoring methods. It discusses why each method should be used and its aims. The paper describes the techniques, and processes involved in each method. Variations on each method, applications and innovations are discussed. The paper also mentions different materials that can be used, and the strengths and weaknesses of each method.

This report contains a section on PRA and its use in on-farm trials in Sri Lanka. The principles of RRA are outlined and discussed. A number of RRA techniques are described - pair ranking, matrix ranking, wealth ranking, diagramming, interviewing, key informants and reconnaissance surveys - using aerial maps and remote sensing.