This article describes the use of peer review for federal research imp
act evaluation. For selected agencies, it covers peer review practices
for proposed and existing programs. It shows that nearer-term researc
h impacts typically play a more important role in the review outcome t
han longer-term impacts; however; they do not have quite the importanc
e of team quality, research approach or the research merit. Although a
dvanced review processes can improve the efficiency of a review, three
of the most important intangible factors for a high-quality peer revi
ew are motivation of the review leader and competence and independence
of the review team members. Although peer review in its broadest sens
e is the most widely used method in research selection, review, and ex
post assessment, it has its deficiencies, and there is no single meth
od that provides a complete impact evaluation The use of quantitative
techniques such as bibliometrics to supplement peer review is an area
ripe for exploitation