%0 Journal Article %T What Can Demographic每Economic Modeling Tell Us about the Consequences of Regional Decline? %A Peter W. J. Batey %J International Regional Science Review %@ 1552-6925 %D 2018 %R 10.1177/0160017616654741 %X The aim of this article is to demonstrate how a particular modeling framework, based on extended input每output analysis, can be used to obtain a clearer understanding of the impact of regional decline of the effects of high, and rising, unemployment; of falling industrial final demand; of welfare payments; and of declining population. The activity每commodity framework used here provides a systematic way of adding demographic variables to the familiar Leontief interindustry model and the extended inverse derived from it provides a rich source of information about the interaction of demographic and economic change, expressed as demographic每economic and economic每demographic multipliers. Drawing on the author*s research in the 1980s and 1990s, this article considers two empirical examples to show the framework*s analytical value: a simple extended model is used to assess the distributional effects of welfare payments in a declining region; and a more elaborate version is linked to a set of regional labor market accounts, summarizing intercensal change in population and employment. This model is used to produce a comprehensive assessment of the effects of population and employment change in two UK regions, one a growing region (East Anglia) and the other a region in decline (Merseyside). In a final section, the benefits and limitations of the extended input每output modeling framework are discussed in comparison with some of the alternative modeling frameworks that are currently available %K extended input每output models %K regional decline %K impact analysis %U https://journals.sagepub.com/doi/full/10.1177/0160017616654741