Report of the 1984 external program review (EPR) of CIAT, by a panel chaired by Fred Hutchinson. It was discussed, together with the concurrent external management review (EMR), at TAC 34 in June 1984, and at the CGIAR meeting in November 1984. The document includes the summary of the CGIAR discussion of the EPR, letters from Hutchinson to TAC Chairman Guy Camus, and from Camus to the CGIAR Chairman transmitting the EPR, CIAT's response to the EPR, and TAC's commentary on both reviews.The review noted the evolution of CIAT's mandate from a disciplinary to a commodity-based, interdisciplinary orientation with programs reduced to three commodities (rice, beans, and cassava), and tropical pastures. High levels of impact were noted, particularl...