A history of post-Keynesian economics

John King, in his A History of Post Keynesian Economics Since1936, raises the question of whether there exists a body ofwork which can be called, collectively, post Keynesian. Thispaper presents some criteria for addressing this question, beginningwith the vision and the origins of some of the post-Keynesianideas, leading to an examination of certain features of thevarious groups, including their methodology and their approachesto uncertainty, their pricing theories and their growth theories.It is concluded that, although there is much diversity in thevarious groups, they are reconcilable when seen as referringto different aspects of the economic process and at differinglevels of abstraction.     

Consumer information,labelling and international trade in agri-food products

The focus of the World Trade Organization is establishing limits on governments’ ability to impose trade barriers in response to producers’ requests for protection. In recent years, however, requests for protection from imports has increasingly come from consumers over issues ranging from animal welfare concerns, employment of child labour, the use of growth hormones, differing environmental standards and GM foods. The current international trade regime is ill-suited to deal with consumer-based protectionism. This paper develops a model that explicitly incorporates consumer concerns into an international trade model and compares the result with the standard treatment. Further, using the model incorporating consumer concerns, a labelling policy for imports is compared to an import embargo. The labelling policy is found to be superior to an embargo. Implications are drawn for future trade negotiations pertaining to sanitary and phytosanitary measures and technical barriers to trade.     

Transparency,Information Shocks,and Tax Avoidance

This study helps provide clarity to the prior mixed findings on the association between financial reporting transparency and tax avoidance by studying the effect that transparency has on tax avoidance in a cross‐country sample through aggregate‐ and firm‐level tests. Results using firm‐ and country‐level (aggregate) measures of transparency and tax avoidance show that countries and firms with greater levels of transparency exhibit lower levels of tax avoidance and that the effect of country‐level transparency is incremental to firm‐level transparency. Furthermore, results of difference‐in‐difference tests using the adoption of IFRS and the initial enforcement of insider trading laws around the world as exogenous shocks that increase transparency find that transparency has a statistically and economically significant effect on tax avoidance and address empirical concerns regarding endogeneity and reverse causality not fully addressed in the prior research. The results of these tests as well as tests that address potential correlated but omitted variables suggest that financial transparency is an important tool which regulators can use in battling tax avoidance.     

Resource constraints and partial adoption of conservation agriculture by hand-hoe farmers in Mozambique

Conservation agriculture is a set of practices widely promoted to increase agricultural productivity while conserving soil through reduced tillage, mulching and crop rotation. Adoption levels are low across southern Africa and farmers often use only some components on small portions of their land. This study uses in-depth interviews and partial budget analysis to explore adoption of conservation agriculture in Mozambique's Angonia highlands. Farmers described many benefits but there was little sign of adoption beyond plots where non-governmental organizations promoting conservation agriculture had provided inputs. Most farmers were adamant that conservation agriculture could perform better than conventional agriculture only if they applied fertilizer or compost. With current costs and prices, conservation agriculture is unprofitable except on small plots for farmers with low opportunity cost of household labour. These findings suggest that conservation agriculture can improve maize yields but capital and labour constraints limit adoption to small plots in the absence of free or subsidized inputs. Given the current ranges of prices for grain and inputs these manual forms of conservation agriculture will not be adopted on a large scale in Angonia. Nevertheless, small conservation agriculture plots can provide farmers with high yields where constraints are lowest.     

Exploring the impact of mobile money services on marketing interactions in relation to consumer well-being in subsistence marketplaces – lessons from rural Cambodia

Abstract

The mobile phone has increasingly become a channel for providing access to formal financial services. There is a need to understand how financial service offerings, increasingly accessed through mobile phones, impact marketing interactions, specifically marketing exchange activities and social network relationships, to enhance consumer well-being (CWB) in subsistence marketplaces. Through interviews and contextualised observational research in rural Cambodia, findings reveal that the impacts of mobile money services on marketing interactions in relation to CWB can be categorised at two distinct levels. The first-level impact is the actual physical money transfer transactions as part of the marketing exchange activities which leads to the second-level impact on the social network relationships at interpersonal, social group and cultural levels. Drawing from these insights, policy-makers and industry stakeholders can formulate strategies and develop innovative service offerings through mobile phone technology to enhance CWB in subsistence marketplaces.     

The returns to formality and informality in urban Africa

This paper addresses the questions as to the size and causes of earnings differentials in two urban African labor markets, those of Ghana and Tanzania. We have panel data so we can ask how far time invariant unobservables, market ability for short, matters in the determination of earnings. We also have information on whether the individual is own self-employed, self-employed with employees, a private or public sector wage employee and the size of the enterprise in which wage employees work or which the self-employed owns. We find, mirroring work on developed economies, that unobserved individual market ability is by far the most important factor explaining the variance of earnings. With controls for such ability the gap between private wage employment and civil servants is about 50%. With controls for enterprise size we find that wage employees earn the same as the self-employed in both Ghana and Tanzania. Enterprise size matters. At most half of the OLS effect of size on earnings can be explained by unobservable ability. Workers in the largest firms are the high earners with wage rates which exceed those of civil servants. These results all assume exogenous movement. We find evidence that endogeneity bias may be serious and may be understating the extent of both the size effect and the private sector wage (negative) premium. The implications of our results for understanding the nature of formal and informal employment in Africa are discussed.     

The COVID-19 pandemic and agriculture: Short- and long-run implications for international trade relations

The COVID-19 pandemic has put unprecedented strain on food supply chains. Given the ever-increasing degree of globalization, those supply chains very often stretch across international borders. In the short run, countries have largely been working to keep those supply chains intact and operating efficiently so that panic buying is cooled and shifts in consumption habits arising from personal isolation can be accommodated. Once the crisis has passed, based on what has been learned regarding the international food system's resilience, governments may wish to strengthen institutions that govern international trade. On the other hand, based on their COVID-19 experience, governments may feel that they are too dependent on foreign sources of supply and may wish to reverse the impacts of globalization on their food systems. As a result, they may become increasingly isolationist, eschewing international cooperation. Which of these opposing forces will prevail may depend on the paths economies follow after the disequilibrium precipitated by the pandemic.