Measurement is fundamental to all the sciences, the behavioural and
social as well as the physical and in the latter its results provide our
paradigms of 'objective fact'. But the basis and justification of
measurement is not well understood and is often simply taken for
granted. Henry Kyburg Jr proposes here an original, carefully worked out
theory of the foundations of measurement, to show how quantities can be
defined, why certain mathematical structures are appropriate to them and
what meaning attaches to the results generated. Crucial to his approach
is the notion of error - it can not be eliminated entirely from its
introduction and control, her argues, arises the very possibility of
measurement. Professor Kyburg's approach emphasises the empirical
process of making measurements. In developing it he discusses vital
questions concerning the general connection between a scientific theory
and the results which support it (or fail to).