Comparing Student Achievement across Experimental and Lecture-Oriented Sections of a Principles of Microeconomics Course

An increasingly popular alternative to the lecture-oriented “chalk-and-talk” approach to teaching principles of microeconomics is the use of classroom experiments. Like other alternatives to traditional teaching methods, there exists little more than anecdotal evidence supporting the effectiveness of the experimental approach. We estimate the effect of participating in classroom experiments on student achievement in a principles of microeconomics course. Nine sections (300 students) participated in the study, two of which (59 students) relied heavily on classroom experiments throughout the semester. The remaining seven sections (241 students) used no experiments. We find that students in the experimental sections experienced significantly higher gains in Test of Understanding in College Economics (TUCE) scores but differed little on other more qualitative outcomes. Additionally, results indicate that certain student characteristics, including gentler, major, and grade point average, can be used to predict a student's likely success when choosing between courses that rely on experiments and those that employ more traditional forms of pedagogy.     

Why do farmers have so little interest in futures markets?

A farm financial model with leverage and investment in two farm enterprises is specified. The model is extended to incorporate futures hedging and the Separation Theorem is used to show that optimal hedging is zero. The assumption of a risk‐free asset is relaxed and, while this leads to a violation of the Separation Theorem, the result that optimal hedging is zero is maintained providing that futures markets are efficient. It is concluded that if capital markets are efficient then farmers will have little interest in futures markets except to speculate.     

乔治·梅森大学——“听美国人话，中国转型就不会那么成功”

在人民币汇率问题上，中国希望人民币保持低价值，主要希望以此扩大出口，并消化从农村涌到城市的劳动力。中国在对外出口上的成功有着多方面的原因，不仅仅在于它的低工资和高生产率。人民币汇率在这方面不构成一个主要因素。     

Real exchange rate behavior

Using random simulations with artificial data with identical sample characteristics to the long-sample exchange rate data employed by Lothian and Taylor (Lothian, J.R. and Taylor, M.P. (1996). The recent float from the perspective of the past two centuries. Journal of Political Economy 104, 488–509.), we show that standard unit-root tests have extremely low power over sample sizes corresponding to the recent float. The probability of rejecting the null hypothesis when it is false is extremely low with 20 years or even 50 years of data and only reaches an acceptable level over much longer spans.     

Identifying Decision Useful Information with the Matrix Format Income Statement

We conduct an experiment to investigate the potential benefits of an alternative format for the income statement, the matrix format, initially developed by the International Accounting Standards Board (IASB) and UK Accounting Standards Board in their joint project on performance reporting. Sophisticated financial statement users (financial analysts and professional accountants) and less sophisticated financial statement users (MBA students) were asked to extract information from a set of financial statements that included an income statement either in the IAS 1 format or in the matrix format. We find that the matrix format improves the accuracy with which users extract financial information. This result is driven by greater accuracy, for all user groups, on “below‐the‐line” items. Furthermore, despite lack of familiarity with the matrix format, its use did not appear to affect the time taken, the ease of extracting financial information, or users' task completion confidence; further experience with the matrix format could lead to benefits along these lines as well. Our findings may assist the FASB and IASB in their joint project on financial statement presentation.