Knowledge that Transforms

In this paper various methods for the estimation of simultaneous equation models with lagged endogenous variables and first order serially correlated errors are discussed. The methods differ in the number of instrumental variables used. The asymptotic and small sample properties of the various methods are compared, and the variables which must be included as instruments to insure consistent estimates are derived. A suggestion on how to estimate the approximate covariance matrix of the estimators is made.

1. Introduction and Doctrinal Background Enter and Latitude for deterioration, and slack in economic thought Exit and voice as impersonations of economics and politics 2. Exit How the exit option works Competition as collusive behavior 3. Voice Voice as a residual of exit Voice as an alternative to exit 4. A Special Difficulty in Combining Exit and Voice 5. How Monopoly Can be Comforted by Competition 6. On Spatial Duopoly and the Dynamics of Two-Party Systems 7. A Theory of Loyalty The activation of voice as a function of loyalty Loyalist behavior as modified by severe initiation and high penalties for exit Loyalty and the difficult exit from public goods (and evils) 8. Exit and Voice in American Ideology and Practice 9. The Elusive Optimal Mix of Exit and Voice Appendixes A. A simple diagrammatic representation of voice and exit B. The choice between voice and exit C. The reversal phenomenon D. Consumer reactions to price rise and quality decline in the case of several connoisseur goods F. The effects of severity of initiation on activism: design for an experiment (in collaboration with Philip G. Zimbardo and Mark Snyder) Index

Eugene F. Fama, Efficient Capital Markets: A Review of Theory and Empirical Work, The Journal of Finance, Vol. 25, No. 2, Papers and Proceedings of the Twenty-Eighth Annual Meeting of the American Finance Association New York, N.Y. December, 28-30, 1969 (May, 1970), pp. 383-417