Mobile number portability in Europe

This paper examines the causes and effects of mobile number portability (MNP) and provides a survey of its implementation in Europe. It first examines the competitive effects and costs of introducing MNP. Next, it discusses how to charge for MNP. It argues that a price cap regime starting from the average cost of porting is likely to provide appropriate incentives. Finally, it reviews recent experience with implementing MNP in Europe. Differences in the speed of porting and porting charges appear to explain part of the differences in the use of MNP across countries.     

Consumer choice and local network effects in mobile telecommunications in Turkey

The aim of this paper is to analyze the extent of network effects in mobile telecommunications in Turkey, and to identify other determinants of consumer choice based on consumer survey data. This study shows that there are regional disparities in the adoption of network services in Turkey, the attractiveness of the different networks varies for consumers between different regions. The results show that local network effects are significant for consumer choice. This finding means that consumers are more likely to be affected by the choices of other people within their local area than by the overall size of a network. Furthermore, local network effects also outweigh macro network effects at least in Turkey.     

Consumer behavior towards on-net/off-net price differentiation

This paper explores how consumers react towards price differentiation between on-net and off-net calls in mobile telecommunications - a pricing policy that is common in many mobile telecommunications markets. Based on a survey of 1044 students it is demonstrated that some consumers may suffer from a "price differentiation bias", i.e., a fair number of consumers may overestimate the savings that result from reduced on-net and/or off-net charges, as they do not appear to weigh the prices with the probabilities of placing off-net and on-net calls. This may help to explain why it have been the smaller operators in various countries who have introduced on-net/off-net price differentiation. The paper also discusses the implications that such a consumer bias may have for market competition.     

Competition in Turkish mobile telecommunications markets: Price elasticities and network substitution

This paper estimates demand elasticities for Turkish mobile telecommunications markets. In contrast to most other studies, firm-level data is used to estimate dynamic panel data models including instrumental variable techniques. Both short- and long-run elasticities are calculated, yielding a long-run price elasticity of −0.72 for the post-paid market and of −0.33 for the pre-paid market. The short-run price elasticity is estimated to be −0.36 for the post-paid market and −0.20 for the pre-paid market. In addition, there is evidence of fixed-to-mobile traffic substitution for consumers who use pre-paid cards.     

Specification and Estimation of Production Functions Involving Damage Control Inputs: A Two-Stage, Semiparametric Approach

Productivity assessment of damage control inputs (such as pesticides) is complicated because their effect depends on the exposure to damage agents (such as pests). We discuss some open specification and estimation issues. The contribution is threefold. First, we elaborate the separability conditions for the damage control function and production function. Second, we employ a two-stage semiparametric technique to combine attractive features of both nonparametric and parametric approaches. Third, we model the interaction between pest exposure and damage control inputs by using slope dummies. An application to productivity analysis of small scale Bt cotton production in China illustrates the approach.     

Mobile Number Portability

This paper examines the consequences of introducing mobile number portability (MNP). We show that if the sole effect of introducing MNP is the abolishment of switching costs, MNP unambiguously benefits mobile customers. However, if MNP also causes consumer ignorance, as telephone numbers no longer identify networks, mobile operators will increase termination charges, with ambiguous net effect on the surplus of mobile customers. We examine how extensions such as MNP based on call-forwarding, termination fee regulation, and alternative means of carrier identification affect these findings and discuss policy implications.     

Discovery and social learning in non-priced environments: An Austrian view of social network theory

Our purpose here is to engage in a cross-disciplinary discussion between Austrian economics and social network theory. In particular, we ask what role social networks play in the extended order in regard to both individual discovery and whether social networks can be the source of widespread unintended cooperation among individuals unknown to one another. Although Austrians have examined the function that market prices play in generating social cooperation, such discussions tend to steer clear of non-priced environments, such as interaction within social networks. We seek to explore this gap. While we acknowledge that non-price information feedback mechanisms such as status and reputation lack the calculability so crucial to market coordination, we argue that they can nonetheless mimic other important qualities of market prices and generate widespread unintended social cooperation among people unknown to one another. After a general discussion, we apply these ideas to online philanthropic communities.