An Empirical Model of Advertising Dynamics

This paper develops a model of dynamic advertising competition, and applies it to the problem of optimal advertising scheduling through time. In many industries we observe advertising “pulsing”, whereby firms systematically switch advertising on and off at a high-frequency. Hence, we observe periods of zero and non-zero advertising, as opposed to a steady level of positive advertising. Previous research has rationalized pulsing through two features of the sale response function: an S-shaped response to advertising, and long-run effects of current advertising on demand. Despite considerable evidence for advertising carry-over, existing evidence for non-convexities in the shape of the sales-response to advertising has been limited and, often, mixed. We show how both features can be included in a discrete choice based demand system and estimated using a simple partial maximum likelihood estimator. The demand estimates are then taken to the supply side, where we simulate the outcome of a dynamic game using the Markov perfect equilibrium (MPE) concept. Our objective is not to test for the specific game generating observed advertising levels. Rather, we wish to verify whether the use of pulsing (on and off) can be justified as an equilibrium advertising practice. We solve for the equilibrium using numerical dynamic programming methods. The flexibility provided by the numerical solution method allows us to improve on the existing literature, which typically considers only two competitors, and places strong restrictions on the demand models for which the supply side policies can be obtained. We estimate the demand model using data from the Frozen Entree product category. We find evidence for a threshold effect, which is qualitatively similar to the aforementioned S-shaped advertising response. We also show that the threshold is robust to functional form assumptions for the marginal impact of advertising on demand. Our estimates, which are obtained without imposing any supply side restrictions, imply that firms should indeed pulse in equilibrium. Predicted advertising in the MPE is higher, on average, than observed advertising. On average, the optimal advertising policies yield a moderate profit improvement over the profits under observed advertising.JEL Classification: L11, L66, M30 M37 R12     

Monetary policy synchronization in the ASEAN-5 region: an exchange rate perspective

In light of the long-standing vision of economic and monetary integration in the ASEAN (Association of Southeast Asian Nations) region and the importance of coordinating monetary policies to achieve it, the objective of this article is to assess the monetary policy synchronization among the founding members of the ASEAN, that is, Indonesia, Malaysia, the Philippines, Singapore and Thailand. Due to the importance of exchange rate movements to monetary policies, we approach this issue from a currency exchange rate perspective. Specifically, multivariate trend–cycle decomposition is employed to investigate common trends and common cycles among the exchange rates of these countries during the period 1976–2012. Our analysis reveals that the real exchange rates of Malaysia, the Philippines, Singapore and Thailand share common cycles in the short term and have common trends in the long term, but the Indonesian currency does not share these relationships. Thus, our results augur well for the synchronization of monetary policies among Malaysia, the Philippines, Singapore and Thailand. In contrast, the relatively turbulent dynamics of the Indonesian rupiah evident in frequent bouts of stark depreciation separated by periods of steady depreciation over the past three decades raise questions regarding the readiness of Indonesia for participating in a monetary alliance with the ASEAN-4 nations.     

Tax efficiency in selected Indian states

This paper attempts to measure pure tax efficiency of fifteen major Indian states (Andhra Pradesh, Assam, Bihar, Haryana, Gujarat, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Orissa, Punjab, Rajasthan, Tamilnadu, Uttar Pradesh and West Bengal) for the period 1980–81 to 1992–93 in a manner that allows this efficiency to vary both across time as well as across states. It is discovered that there is a moral hazard problem in the design of central grants in that higher grants by the central government to the state governments reduce efficiency of tax collection by these states. The less poor states are more efficient in tax collection. The rankings of states by tax efficiency for the various years do not converge. An index of aggregate tax efficiency is calculated and it appears that this index has been stagnating. It is argued that the weight placed on tax effort in the formula determining central grants to state governments should be increased to improve tax efficiency of state governments. First version received: November 1997/final version received: November 1998     

Internet use and consumption diversity: Evidence from rural China

The Internet is integral to modern living. While the Internet is ubiquitous in China's urban areas, its uptake is still lagging in the country's rural regions—the development potential of the Internet remains untapped, and despite China's steep economic growth during the 21st century, the living standards in its rural regions remain low. The Internet can accelerate rural development in China. This study is focused on analyzing whether and to what extent Internet use affects consumption diversity, an indicator of the quality of life, in rural China. To this end, we employ the instrumental-variable-based two-stage endogenous treatment regression model to analyze the 2018 China Family Panel Studies survey data. The modeling approach allows us to account for the endogeneity of Internet use. The results show that consumption diversity is positively associated with Internet use. Furthermore, it rises with household income, household size, and wealth. Whether the Internet is accessed via smartphones or computers has no bearing on household consumption diversity. We also find that education, household income, and wealth increase one's predicted probability of using the Internet. The results also point to regional differences in consumption diversity and the likelihood of using the Internet.     

Corruption,remittances, and public goods: A unified framework

Remittances are an important source of income for the very countries afflicted by high levels of corruption. However, corruption undermines the development potential of remittances. With this in mind, we propose policy reforms that harness the potential of remittances while mitigating corruption. Unlike previous studies, we point to two channels: (1) the corrupt government's trade-off between its financial interests (corruption), the provision of a public good, and the gains from a higher inflow of remittances; and (2) the household's consumption of the public good relative to that of the privately obtained substitute of the public good.     

Does agricultural cooperative membership influence off-farm work decisions of farm couples?

Membership in agricultural cooperatives may influence intra-household decisions regarding the division of household labor. However, the linkages between cooperative membership and labor allocation remain unexplored. To fill this gap, we examine the impact of cooperative membership on off-farm work decisions of couples engaged in farming, using data collected from 595 banana farmers in China. The recursive bivariate probit model and endogenous-treatment Poisson regression model are employed to address the self-selection bias inherent in cooperative membership. The results show that cooperative membership increases the probability of participating in off-farm work by 38% for husbands and 31% for wives. Having large households reduces the probability of husbands but increases that of wives working off-farm. Cooperative membership is also associated with more time spent on off-farm work and higher earnings for both husbands and wives. Our findings point to the potential of agricultural cooperatives to increase farm couples’ off-farm employment, thus increasing household income and quality of life.     

Linkages between natural gas,fertiliser and cereal prices: A note

We use structural vector autoregressions to analyse the dynamic effects of shocks to natural gas and nitrogenous fertiliser prices on three major cereal crops: maize, rice and wheat. We find that the response of cereal prices to natural gas and fertiliser price shocks has been relatively small, instantaneous and transitory. These findings suggest that crop prices may change rapidly in response to energy and fertiliser prices, even when there are no shifts in the underlying fundamentals in crop markets. Furthermore, because the effects of the shocks dissipate rather quickly, short-term measures to address swings in food prices may suffice.