Isaac Ehrlich

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he persistence of illegal activity throughout human history and some of its apparent regularities have long attracted the attention of economists. For example, Adam Smith (1776 [1937], p. 670) observed that crime and the demand for protection from crime are both motivated by the accumulation of property. William Paley (1785 [1822]) presented a penetrating(More)
Leamer and McManus applied Extreme Bound Analysis (EBA) in an empirical study of the deterrent effects of capital punishment and other penalties. Their analysis has questioned the validity of the deterrence hypothesis. The thrust of our paper is twofold: First, by applying EBA to well known econometric models of demand, production, and human-capital(More)
HUMANS HAVE BEEN CUTTING ETHIOPIAN FORESTS FOR FUEL AND AGRICULTURE FOR CENTURIES (1). Only about 35,000 fragments remain in the northern highlands, ranging in size from 3 to 300 hectares. These fragments escaped deforestation because of their religious and spiritual importance; they are protected by, and are an integral part of, the Ethiopian Orthodox(More)
The Working Papers in this series have not undergone peer review or been edited by USC. The series is intended to make results of CESR and Schaeffer Center research widely available, in preliminary form, to encourage discussion and input from the research community before publication in a formal, peer-reviewed journal. CESR-Schaeffer working papers can be(More)
  • I Ehrlich
  • 1982
The general proposition developed in this paper is that the frequency of offences of specific types is determined, by and large, not as the capricious outcome of biological or social idiosyncracies, but as the result of the equilibrating interplay of systematic 'supply and demand' forces. The role of public intervention via police, courts, correctional(More)
¤ We thank J ¶ er^ ome Detemple for stimulating our interest in this problem. Non-incriminating thanks are also due to comments helped our own understanding of the paper, and improved its exposition considerably. An earlier vintage of this paper was written and circulated when Banerji was visiting the economics department at Boston University. We also thank(More)
for comments on earlier drafts. Remaining errors and omissions are our own. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research. to exceed two paragraphs, may be quoted without explicit permission provided that full credit, including © notice, is given to the source.