Abstrac t-This note empirically examines the issue of real interest rate equalization across countries. The equality of real interest rates is implied by two frequently employed concepts of equilibrium in international asset (capital) and commodity markets and imposes certain time series restrictions on ex post real interest rates. Statistical tests of these restrictions strongly reject the hypothesis that real interest rates have been equal across countries.

The purpose of this paper is to present new evidence on employer search to fill a position. The study is based on data for recent hires collected in the 1980 Employer Opportunity Pilot Project (EOPP) survey of employers. The paper investigates the effect of factors such as training, employer size, and labor market conditions on employer search. Employer search is measured by the number of applicants interviewed prior to an employment offer and the average number of hours spent by an employer recruiting, screening, and interviewing per applicant interviewed. The paper also documents the relationship between employer search and wages.

This study examines institutional production of higher education. An interesting aspect of this production process is that two of the more important inputs, students and faculty, enter upon considerable self-selection. To address this interdependence, the production relationship is specified by a three-equation simultaneous model in which the quality of college output, faculty, and students are treated endogenously. The significance of simultaneity is demonstrated in an empirical model estimated via three-stage least-squares for a sample of 174 private undergraduate institutions. The results offer clear implications regarding the allocation of institutional resources across the basic factors in educational production. This paper examines the input-output relationship for private undergraduate education. The study falls generally within the economic literature that has analyzed the educational process via a production function specification (Astin, 1968; Bowles, 1970; Summers and Wolfe, 1977; Hanushek, 1979; McGuckin and Winkler, 1979). However, we extend the argument that research assessments of the educational process are not dealing with a production function in the classic sense. For example, the purchaser of the product-the student-is also one of the more important inputs. Further, the non-profit orientation of most universities reduces incentives for cost minimization.' The implication is that the educational process is far more complicated than a simple, production-functional rendering indicates. To demonstrate this point, we estimate a three-equation simultaneous model in which the quality of students, faculty, and college output are treated endogenously.2 This study's broad objective is to identify more clearly the relative contribution of the many human and nonhuman resources combining to produce quality under-

We examine six integration schemes and decompose their ability to increase inter-member trade into environmental, policy and system effects. Environmental factors caused the greatest variation in trade creation, with inter-member distance the most important environmental variable. The CACM and EFTA have followed more effective integration policies than the EEC, LAFTA and the Andean Pact. Although integration can thus benefit developed and developing countries alike, for some, such as those in Latin America, inter-member distances severely limit its effectiveness. While the combination of policy and system has kept the CMEA fromrr achieving its full potential for increasing inter-member trade, its effectiveness does not differ from that of unions among market economies.

Ray-homotheticity is proposed as a fruitful way of modelling scale economies. It permits scale economies to vary with the rate of output and the input mix, thus allowing ideal output to be input mix-dependent. Our empirical results illustrate the value of ray-homotheticity as a generalization of both homotheticity and ray-homogeneity. They also shed some light on the use of Wald and likelihood ratio tests for hypothesis testing in nested nonlinear models. We find instances of conflict between the two tests, and of reversal of the ordering that holds in linear models.