Land‐use change trajectories up to 2050: insights from a global agro‐economic model comparison

Changes in agricultural land use have important implications for environmental services. Previous studies of agricultural land‐use futures have been published indicating large uncertainty due to different model assumptions and methodologies. In this article we present a first comprehensive comparison of global agro‐economic models that have harmonized drivers of population, GDP, and biophysical yields. The comparison allows us to ask two research questions: (1) How much cropland will be used under different socioeconomic and climate change scenarios? (2) How can differences in model results be explained? The comparison includes four partial and six general equilibrium models that differ in how they model land supply and amount of potentially available land. We analyze results of two different socioeconomic scenarios and three climate scenarios (one with constant climate). Most models (7 out of 10) project an increase of cropland of 10–25% by 2050 compared to 2005 (under constant climate), but one model projects a decrease. Pasture land expands in some models, which increase the treat on natural vegetation further. Across all models most of the cropland expansion takes place in South America and sub‐Saharan Africa. In general, the strongest differences in model results are related to differences in the costs of land expansion, the endogenous productivity responses, and the assumptions about potential cropland.     

The power of stereotyping and confirmation bias to overwhelm accurate assessment: the case of economics,gender, and risk aversion

Behavioral research has revealed how normal human cognitive processes can tend to lead us astray. But do these affect economic researchers, ourselves? This article explores the consequences of stereotyping and confirmation bias using a sample of published articles from the economics literature on gender and risk aversion. The results demonstrate that the supposedly ‘robust’ claim that ‘women are more risk averse than men’ is far less empirically supported than has been claimed. The questions of how these cognitive biases arise and why they have such power are discussed, and methodological practices that may help to attenuate these biases are outlined.     

Customer perception and response to ethical norms in legal services marketing

The study here examines the relationship between ethical marketing norms, relationship quality (RQ), and commitment in the context of legal services. Through a survey of customers of legal services providers in Malaysia, data were collected. Results from a standard analysis of data show that the four dimensions of ethical marketing norms contribute significantly and explain a significant amount of variance in RQ and commitment. The results further show that three dimensions of ethical norms namely price and distribution norm, information and contract norm, and general honesty and integrity norm are significantly associated with relationship quality and commitment. Product and promotion norm has no significant relationship with relationship quality and commitment. RQ plays a mediating role in the relationship between marketing norms and commitment. The study reveals that the same three dimensions of marketing norms predict both RQ and commitment, and are useful for effective legal services marketing. These findings lead to research, managerial, contextual and policy implications that conclude the paper.     

The effects of agricultural policy on supply and productivity: Evidence from differential changes in distortions

Incentives in agriculture are highly distorted. It has long been argued that these distortions were a key explanation for differences in supply and productivity across countries, but the empirical evidence is limited. We revisit this issue using data on policy distortions across 63 countries for the period 1961–2011. We estimate the effects of differential changes in agricultural distortions across countries on supply and productivity. We highlight concerns in our analysis and previous work about endogeneity that biases the estimated effect downward—countries that lose comparative advantage are likely to increase support for agriculture. We address these concerns by including country and region-time fixed effects, along with a rich set of controls. Overall, we find evidence that enhanced incentives through policy changes can increase the rate of production growth, with about half of the increase due to productivity increases. This result is strongest in Sub-Saharan Africa where anti-agricultural policies on exports were reduced and in Europe where pro-agricultural policies on imports were reduced, driven largely by external pressure. Endogeneity appears to be strongest in Asia where countries have followed the typical pattern of raising support for agriculture during industrialization due to a rising farm-urban income gap.     

Sub-Saharan Africa's rising public debt stock: Is there a cause for concern?

The study investigated public debt sustainability in sub-Saharan Africa (SSA) by testing the reaction of the primary balance to positive and negative shocks in public debts in a panel of 45 SSA countries. The study adopts the innovative nonlinear fiscal reaction function and the dynamic panel threshold model to account for the potential asymmetric phenomenon in the public debt series. In line with extant studies, the study found that public debts in SSA are weakly sustainable and there is a highly procyclical fiscal policy bias in SSA countries, particularly in resource-rich countries, indicating that governments' fiscal policy responses are expansionary during economic upturns and contractionary during recessions, which may aggravate recessions and worsen debt situations across SSA. For robustness, the study compares the results with emerging and developed economies. The results indicate that in advanced economies, public debt is sustainable and that fiscal policy response is countercyclical. The research and policy implications are discussed.     

Dynamic mean–variance problem with frictions

Finance and Stochastics - We study a dynamic mean–variance portfolio selection problem with return predictability and trading frictions from price impact. Applying mean-field type control...