A NOTE ON THE GENERAL MATHEMATICAL EQUIVALENCY OF ECONOMIC BASE AND AGGREGATE INPUT-OUTPUT MULTIPLIERS: FACT OR FICTION*

ABSTRACT A longstanding inconsistency in the definition of basic and nonbasic economic activity is resolved. When indirect exports are included in the basic, rather than the nonbasic sector, and the model is closed with respect to households, economic base and aggregate input-output mulitpliers constructed with the same data and definitions will be mathematically identical.     

THE SENSITIVITY OF INPUT-OUTPUT MULTIPLIERS*

The present paper derives analytical expressions for the sensitivity of input-output multipliers to errors in the data. The effects on the simple output multipliers are investigated for additive errors, multiplicative errors in the columns, multiplicative errors in the rows, error rectangles, the error couple and the single error, and price changes. In contrast to earlier investigations, the results are not obtained from the Leontief inverse. The present approach focusses on the effects of errors on the eigenvector corresponding to the dominant eigenvalue. It is indicated how similar expressions may be derived for several other multipliers.     

A NEOCLASSICAL ANATOMY OF THE ECONOMIC BASE MULTIPLIER*

ABSTRACT Keynesian export base theory ignores the supply side of the economy, while trade models may overemphasize resource constraints. A general equilibrium model which stakes out a position between those extremes is developed and used to define rigorously the components of an economic base (EB) multiplier. Capital moves freely in and out of the regional economy, but the factor land is fixed. Interregional labor movements are caused by wage differentials. Factor and relative commodity prices are determined endogenously. Demand and supply sides of a small regional economy are included. The relationship between average and marginal EB multipliers, and between key parameters (regional size, several elasticities, etc.) and the marginal multiplier are discussed. The Keynesian constant EB multiplier can be derived from a special case of the model.     

NEIGHBORHOOD EFFECTS: ACCOMPLISHMENTS AND LOOKING BEYOND THEM*

ABSTRACT The paper addresses the empirical significance of the social context in economic decisions. Decisions of individuals who share spatial and social milieus are likely to be interdependent, and econometric identification of social effects poses intricate data and methodological problems, including dealing with self‐selection in spatial and social groups. It uses a simple empirical framework to introduce social interactions effects at different levels of aggregation, and examines estimation problems in linear models, the impact of self‐selection and of nonlinearities. It also examines neighborhood effects in job matching and proposes a research agenda that offers new techniques and data sources.     

TRANSBOUNDARY INCOME AND EXPENDITURE FLOWS IN REGIONAL INPUT-OUTPUT MODELS*

ABSTRACT. Nearly all regional input-output models have been constructed without a proper accounting of inflows and outflows of personal income and personal consumption expenditures. Typically invoked is a no cross-payments assumption, analogous to the no cross-hauling assumption for commodities. We present a new accounting framework based on the classification of flows according to the location of income generation, receipt, and spending, and argue that only flows endogenous in all three respects should be part of a closed regional I-O model. We use the framework to compute the upward bias in multipliers in a typical regional I-O model. We also present several methods for estimating transboundary flows.