[c] Sensitivity to under- or overestimation
of implicit cutoff rate
Agricultural research expenditures as a percentage of AgGDP (%)
Figure 5: R&D opportunity curves
Rate of return (%) Rate of return (%)
[b] Research-intensity ratio 1981-85
Agricultural research expenditures as a percentage of AgGDP (%)
[d] Developing-country R&D opportunity
curve broken down by region
Agricultural research expenditures as a percentage of AgGDP (%)
18