The Econometric SocietyEdited by: Guido W. Imbens • Print ISSN: 0012-9682 • Online ISSN: 1468-0262
Econometrica: May, 1972, Volume 40, Issue 3
https://doi.org/0012-9682(197205)40:3<431:GS>2.0.CO;2-0
p. 431-453
Robert A. Pollak
A system of demand functions is said to exhibit "generalized additive separability" (GAS) if it can be written in the form xi = fi(yi, R(Y)), i = 1,..., n, where yi is the normalized price of the ith good, and R is a function of all normalized prices. That is, GAS implies that "other prices" enter the demand functions only through an index function, R. This paper shows that the demand functions corresponding to directly and indirectly additive utility functions, the Fourgeaud-Nataf demand functions, and Houthakker's self-dual addilog system exhibit GAS. The direct utility functions corresponding to indirect additivity and the self-dual addilog are characterized, and a production function interpretation of some of these results is suggested. "Generalized strong separability" (GSS) and "generalized weak separability" (GWS) are defined, and it is shown that GSS includes both direct and indirect weak separability.
March 5, 2024
The terms of the Editors of the Econometric Society's three journals end June 30, 2025. We are pleased to announce the incoming Editors and to thank the outgoing Editors for their excellent and continuing service.
Econometrica: Since 2019, Guido Imbens has served as the 14th Editor of Econometrica. On July 1, 2025, Marina Halac will become the Editor.
Quantitative Economics: Stéphane Bonhomme has been the Editor of Quantitative Economics since 2021. His successor will be Bernard Salanié.
Theoretical Economics: The Editor of Theoretical Economics since 2021 has been Simon Board. Taking over for him in July 2025 will be Federico Echenique.
Guido, Stéphane, and Simon have been outstanding Editors. We are grateful to them for the work they have done and will continue to do, and we look forward to further congratulating them next year. We believe Marina, Bernard, and Federico will be outstanding successors and we thank them in advance for their service.
Finally, we are grateful to Larry Samuelson for chairing all three search committees, and we thank the search committee members for their hard and fruitful work:
Econometrica: Christian Dustmann, Lars Hansen, Alessandro Lizzeri, George Mailath, Ariel Pakes, Helene Rey, and Elie Tamer.
QE: Kate Ho, Michael Keane, Felix Kubler, Whitney Newey, and Frank Schorfheide.
TE: Jeff Ely, Johannes Horner, Gilat Levy, Meg Meyer, and Ran Spiegler.
