Portfolio choice with internal habit formation: a life-cycle model with uninsurable labor income risk

Motivated by the success of internal habit formation preferences in explaining asset pricing puzzles, we introduce these preferences in a life-cycle model of consumption and portfolio choice with liquidity constraints, undiversifiable labor income risk and stock-market participation costs. In contrast to the initial motivation, we find that the model is not able to simultaneously match two very important stylized facts: a low stock market participation rate, and moderate equity holdings for those households that do invest in stocks. Habit formation increases wealth accumulation because the intertemporal consumption smoothing motive is stronger. As a result, households start participating in the stock market very early in life, and invest their portfolios almost fully in stocks. Therefore, we conclude that, with respect to its ability to match the empirical evidence on asset allocation behavior, the internal habit formation model is dominated by its time-separable utility counterpart.     

Negative customer engagement behaviour: the interplay of intensity and valence in online networks

ABSTRACT

Recent marketing and service research highlights the detrimental impact of negative customer engagement behaviour (CEB) in online social networks. Nevertheless, the extant literature captures the impact of what customers say about service providers in their negative reviews and fails to provide any understanding of different intensity levels of negative engagement. This article marks the first attempt to provide a more nuanced view of negative CEB by investigating the impact of six forms of negatively valenced influencing behaviour (NVIB) using two online experiments. Our results provide new insights into intensity levels of NVIB and how they are moderated by positive reviews. Practically, this paper addresses one of the challenges for service providers in managing NVIBs, centred on understanding the heterogeneity of its forms. The results suggest that managers use semantic tools to detect the intensity levels of NVIB and to prioritise handling and/or mitigating the more intense NVIBs when they occur.     

Application and performance impact of stage–gate systems – the role services in the firm’s business focus

Although service innovation is important, knowledge of new product and service development, including the positive effect of stage‐and‐gate‐type systems, has been derived almost exclusively from studies in the manufacturing sector. In the present paper, we address two important questions: How do differences in the firm’s business focus, which describes whether a firm puts more emphasis on products or services in its business activities, influence the usage of such formal innovation processes? Is stage‐and‐gate‐type systems’ impact on innovation program performance contingent on the firm’s business focus? Unlike previous studies, we not only differentiate service and manufacturing by industry classification codes but also apply a continuous measure to take into account the blurring of boundaries between the manufacturing and service businesses. Based on a comprehensive discussion of service‐specific characteristics and their implications for innovation management and using a cross‐industry, multi‐informant sample of innovation programs from 272 firms with 1,985 informants, we find empirical support for firms with a stronger focus on the service business being less likely to use stage‐and‐gate‐type systems. Furthermore, the use of stage‐and‐gate‐type systems fosters innovation program performance, and this effect becomes stronger as the business focus shifts toward services. This result implies that service‐based firms can benefit from stage‐and‐gate‐type systems to a greater extent than product‐based firms. Our research also demonstrates the gap between the desired level of innovation process formalization and its current usage in practice, especially for firms with a dominating service business.     

Governments,Exports and Growth: Responding to the Challenges and Opportunities of Globalisation

We live in an increasingly globalised world. Trade has consistently grown faster than GDP and has been an important driver of world growth. What role should government play in this process? This paper considers the rationale for government action and the merits of various policies focusing on the UKs experience: the benefits of openness to trade and overseas investment and the merits of tackling barriers that discourage greater participation by firms in international markets. It also considers whether this approach needs to be adapted given current trends in globalisation, concluding that a continued emphasis on openness and addressing market failures will be welfare enhancing.     

Human capital externalities Evidence from the transition economy of Russia1

The paper tests for the existence of human capital externalities using a micro‐level approach: the Mincerian wage regression augmented with the average level of education in cities. To solve identification problems arising from the endogeneity of average education, the study exploits a natural experiment provided by the process of economic transition: average education at the end of communism can be seen as exogenous in respect of wages prevailing after the start of transition. Our empirical results based on the RLMS data show that a 1 percentage point increase in the share of city residents with a university degree results in an increase of wages of city residents by about 1 percent.     

Evidence of Information Spillovers in the Production of Investment Banking Services

We provide evidence that firms attempting IPOs condition offer terms and the decision whether to carry through with an offering on the experience of their primary market contemporaries. Moreover, while initial returns and IPO volume are positively correlated in the aggregate, the correlation is negative among contemporaneous offerings subject to a common valuation factor. Our findings are consistent with investment banks implicitly bundling offerings subject to a common valuation factor to achieve more equitable internalization of information production costs and thereby preventing coordination failures in primary equity markets.