Generation of Regional Input-Output Tables (Grit): An Introspection

GRIT is a hybrid technique for deriving regional input-output tables. Since its emergence in 1977, the tables and the technique have been widely used by various research organizations. During that period, however, there has been little critical appraisal of the technique or the individual steps involved. This paper outlines some of the shortcomings found inherent in the original GRIT procedure and the subsequent revisions incorporated as a result of empirical and applied experimentation Many of these conclusions are equally applicable to general regional input-output analysis