Can beneficial antecedents to self‐employment be detrimental to entrepreneurial performance?

We hypothesize that risk aversion, plasticity, stability, and locus of control have different effects on a person's decision to enter entrepreneurship and the person's entrepreneurial performance. Empirical results reveal that plasticity and risk tolerance have positive effects on selection but negative effects on income derived in entrepreneurship. Stability, on the other hand, deters entry but has an inversely u‐shaped relation with income. Locus of control has a positive impact on the decision but an insignificant effect on entrepreneurial income. These new insights may guide policy makers on how to help aspiring entrepreneurs overcome the negative effects of their personality traits.     

Die radikalen Steuerpläne der US-Republikaner und die Folgen für die EU

The Republican majority in the US House of Representatives is considering the introduction of a destination-based cash flow tax (DBCFT). While its global implementation has the potential to substantially increase welfare, a unilateral introduction of such a tax system raises a range of questions due to the existence of source-based taxation systems abroad. We consider the US tax plans from an EU perspective. We show that European exporters may suffer, but European firms with affiliation in the US may benefit from a switch to the DBCFT. American firms will be the likely losers of this policy. Finally, we discuss potential policy reactions by the EU and its member countries as well as legal and economic implications of possible adjustments in EU tax systems.     

Why we watch others' responses to online advertising – investigating users' motivations for viewing user-generated content in the context of online advertising

The study investigates Internet users' motivations for viewing user-generated content (UGC) in the context of online advertising. In addition, it is examined whether individual motivation patterns can be traced back to users' personalities and their attitudes toward advertising in general. An online survey of 181 social media users was conducted, surveying users' motivation, personality (big five), and attitude toward advertising in general. Path analysis was employed to examine the research model. The use of UGC was motivated by needs for information, entertainment, personal identity, and social interaction. While personality did not predict users' motives, their attitudes towards advertising in general explained individual motivation patterns to a large extent. It was consequently proposed and confirmed that users' motives mediate the influence of recipients' general attitude toward advertising on UGC usage. Results indicated a strong effective potential for UGC in online advertising: users view such content expressly to be influenced by others fulfilling their needs for information, personal identity and social interaction. Firms may lose some of their ability to precisely control brand messages when advertising in social media.     

Assessing the sustainability of vegetable production practices in northern Ghana*

Urban vegetable production is an intensive agricultural strategy through which urban dwellers secure income and improve their livelihoods. An ethnographic study was conducted in Tamale, Northern Ghana, to understand whether vegetable gardening was a sustainable form of intensification. The study used an updated version of the Food and Agricultural Organization’s International Framework for Evaluating Sustainable Land Management. Accordingly, qualitative data were collected on the security and access to land, political acceptability and human and environmental health implications of urban patch farming. Changes between 2008 and 2014 in the spatial area of the vegetable sites were measured. Cabbage farmer incomes were quantified. The study found that urbanization has prompted an increase in the cultivation of highly profitable vegetables like cabbage. However, they are irrigated with grey and waste water while eaten raw. This, and the use of pesticides in high dosages, poses health and environmental hazards. Industrial growth has reduced the area of open space urban agriculture by 8.7% between 2008 and 2014. Farmers cope with this by cultivating on interstitial spaces and moving to periurban fringes. There, farmers develop institutional liaisons to gain access to intensification technologies and commercialize their production. This production system is dynamic but not yet sustainable.     

From dogmatic views on conservation agriculture adoption in Zambia towards adapting to context

Conservation Agriculture (CA) has been widely promoted in sub-Saharan Africa (SSA) as a sustainable agricultural practice, yet with debatable success. Most authors assume successful adoption, only if all three principles of CA are implemented: (1) minimum or zero tillage, (2) maintenance of a permanent soil cover, and (3) integration of crop rotations. Based on this strict definition, adoption has declined or remained stagnant. Presently, not much attention has been given to context-suited adaptation possibilities, and partial adoption has not been recognized as an entry point to full adoption. Furthermore, isolated success cases have not been analysed sufficiently. By applying the QAToCA approach based on focus group discussions complemented by semi-structured qualitative expert and farmer interviews, we assessed the reasons behind positive CA adaptation and adoption trends in Zambia. Main reasons behind Zambia’s emerging success are (1) a positive institutional influence, (2) a systematic approach towards CA promotion – encouraging a stepwise adaptation and adoption, and (3) mobilization of strong marketing dynamics around CA. These findings could help to eventually adjust or redesign CA promotion activities. We argue for a careful shift from the ‘dogmatic view’ on adoption of CA as a packaged technology, towards adapting its principles to the small-scale farming context of SSA.     

Balance Mechanics and Business Cycles

Abstract

Many mainstream business cycle theories were not able to cope with the financial crisis theoretically. With his concept of balance mechanics, the German economist Wolfgang Stützel developed a framework for comparing different theories of business cycles which helps to understand the reasons for this inadequacy. This paper works out Stützel’s considerations and his four “model cases” of cycles more systematically and shows how the theories of the business cycle Stützel mentioned are related to theories discussed today. Modern business cycle theories did not cover all “model cases” and therefore had a blind spot.     

Pairs trading with a mean-reverting jump–diffusion model on high-frequency data

This paper develops a pairs trading framework based on a mean-reverting jump–diffusion model and applies it to minute-by-minute data of the S&P 500 oil companies from 1998 to 2015. The established statistical arbitrage strategy enables us to perform intraday and overnight trading. Essentially, we conduct a three-step calibration procedure to the spreads of all pair combinations in a formation period. Top pairs are selected based on their spreads’ mean-reversion speed and jump behaviour. Afterwards, we trade the top pairs in an out-of-sample trading period with individualized entry and exit thresholds. In the back-testing study, the strategy produces statistically and economically significant returns of 60.61% p.a. and an annualized Sharpe ratio of 5.30, after transaction costs. We benchmark our pairs trading strategy against variants based on traditional distance and time-series approaches and find its performance to be superior relating to risk–return characteristics. The mean-reversion speed is a main driver of successful and fast termination of the pairs trading strategy.     

LONG HORIZONS,HIGH RISK AVERSION,AND ENDOGENOUS SPREADS

For an investor with constant absolute risk aversion and a long horizon, who trades in a market with constant investment opportunities and small proportional transaction costs, we obtain explicitly the optimal investment policy, its implied welfare, liquidity premium, and trading volume. We identify these quantities as the limits of their isoelastic counterparts for high levels of risk aversion. The results are robust with respect to finite horizons, and extend to multiple uncorrelated risky assets. In this setting, we study a Stackelberg equilibrium, led by a risk‐neutral, monopolistic market maker who sets the spread as to maximize profits. The resulting endogenous spread depends on investment opportunities only, and is of the order of a few percentage points for realistic parameter values.     

Lifetime investment and consumption with recursive preferences and small transaction costs

We investigate the effects of small proportional transaction costs on lifetime consumption and portfolio choice. The extant literature has focused on agents with additive utilities. Here, we extend this analysis to the archetype of nonadditive preferences: the isoelastic recursive utilities proposed by Epstein and Zin.