This paper argues that evaluations of basic research are best carried
out using a range of indicators. After setting out the reasons why ass
essments of government-funded basic research are increasingly needed,
we examine the multi-dimensional nature of basic research. This is fol
lowed by a conceptual analysis of what the different indicators of bas
ic research actually measure. Having discussed the limitations of vari
ous indicators, we describe the method of converging partial indicator
s used in several SPRU evaluations. Yet although most of those who now
use science indicators would agree that a combination of indicators i
s desirable, analysis of a sample of Scientometrics articles suggests
that in practice many continue to use just one or two indicators. The
paper also reports the results of a survey of academic researchers. Th
ey, too, are strongly in favour of research evaluations being based on
multiple indicators combined with peer review. The paper ends with a
discussion as to why multiple indicators are not used more frequently.