Premium
Damage Control Productivity: Why Econometrics Matters
Author(s) -
Carpentier Alain,
Weaver Robert D.
Publication year - 1997
Publication title -
american journal of agricultural economics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.949
H-Index - 111
eISSN - 1467-8276
pISSN - 0002-9092
DOI - 10.2307/1243942
Subject(s) - productivity , econometrics , estimation , panel data , control (management) , marginal product , economics , production (economics) , microeconomics , macroeconomics , management
Abstract For nonexperimental data, asymmetric specifications of the role of damage control inputs impose restrictions of homotheticity or nonjointness on the underlying technology. A generalized symmetric form where damage control inputs affect factor diminution functions motivates use of symmetric specifications. Panel data and estimation methods are presented to produce robust estimates of damage control productivity that are free of heterogeneity bias. Estimates of the productivity of pesticides for French cereal farm production illustrate that fixed firm and time effects are important. Estimates indicate substantially smaller marginal productivity of pesticides than reported by past studies.