Journal Article Quantity Constraints, Spillovers and the Hahn Process Get access Franklin M. Fisher Franklin M. Fisher Massachusetts Institute of Technology Search for other works by this author on: Oxford Academic Google Scholar The Review of Economic Studies, Volume 45, Issue 1, February 1978, Pages 19–31, https://doi.org/10.2307/2297080 Published: 01 February 1978

Journal Article Embodied Technology and the Existence of Labour and Output Aggregates Get access F. M. Fisher F. M. Fisher Massachusetts Institute of Technology Search for other works by this author on: Oxford Academic Google Scholar The Review of Economic Studies, Volume 35, Issue 4, October 1968, Pages 391–412, https://doi.org/10.2307/2296767 Published: 01 October 1968

Journal Article Embodied Technology and the Aggregation of Fixed and Movable Capital Goods Get access F. M. Fisher F. M. Fisher Massachusetts Institute of Technology Search for other works by this author on: Oxford Academic Google Scholar The Review of Economic Studies, Volume 35, Issue 4, October 1968, Pages 417–428, https://doi.org/10.2307/2296769 Published: 01 October 1968

(1). P. 386, note, last line: Theorem 5 should not appear. (2). P. 402, second line of Theorem 5: Line should begin with “ Q ”, not “ P ”. (The theorem is correct as it stands, but is easier to interpret with the correction.) (3). P. 403, eighth line from bottom: “= ( &Ymacr; + δ*)” should be deleted. (4). P. 421, Theorem A , second line and Corollary A , second line: “∽” should be “<f><inline-fig><link locator="71-2-324-fig001"></inline-fig></f>”.

This paper examines the appropriate treatment in the cost-of-living index of the appearance of new varieties of old goods. Existing theory here applies to individual households. Thus, we first show in what sense Laspeyres and Paasche indices for groups of households can be considered approximations to theoretically desirable group indices and then go on to the case of new goods. We apply our results to the case of the introduction of generics in pharmaceuticals and show that proper treatment can make a considerable difference.