How should Engel's law be formulated?

Engel's law expresses a “negative stochastic association” of income and the proportion of income that is spent on food. However, there are many quite different notions of “negative stochastic association” and consequently there are different ways of defining Engel's law. We relate these different concepts to Engel's original statistical analysis and show that one must give credit to Engel for the first non-parametric statistical analysis of budget-data.     

The effects of customers’ perceptions of brand personality in casual theme restaurants

Although existing studies recommend that restaurant chains develop and communicate salient brand personalities, no research to date provides empirical evidence that perceptions of unique brand personality by consumers lead to positive outcomes in the restaurant business. Therefore, using a sample of 336 adults, this research models the causal relationships between brand personality perceptions, brand preference, attitudinal loyalty, and positive word-of-mouth (W-O-M) behavior for the Olive Garden and Chili's restaurant chains. It was found that for both chains, brand personality perceptions have a positive effect on brand preference and attitudinal loyalty, brand preference has a positive impact on attitudinal loyalty, and attitudinal loyalty has a positive influence on positive word-of-mouth (W-O-M) communication. In addition, for the Olive Garden and Chili's brands, it was also found that there is a direct link between brand preference and word-of-mouth behavior.     

On the distributional effects of income in an aggregate consumption relation

Abstract .  In this paper we analyse the influence of characteristics of the income distribution in modelling aggregate consumption expenditure. We model the aggregate consumption relation of a heterogeneous population, using a statistical distributional approach of aggregation, and apply it to UK-Family Expenditure Survey data. A bootstrap test based on a non-parametric estimation methodology, which accounts for the presence of continuous and discrete variables, suggests that the mean and the dispersion of the income distribution significantly influence aggregate consumption expenditure. Also, the parameters of the aggregate relation are time varying. These findings have implications for constructing empirically sound models of aggregate consumption expenditure.     

Long-term health economic benefits of sensor-augmented pump therapy vs continuous subcutaneous insulin infusion alone in type 1 diabetes: a UK perspective

Aims/hypothesis:

Continuous subcutaneous insulin infusion (CSII) is an important treatment option for type 1 diabetes patients unable to achieve adequate glycemic control with multiple daily injections (MDI). Combining CSII with continuous glucose monitoring (CGM) in sensor-augmented pump therapy (SAP) with a low glucose-suspend (LGS) feature may further improve glycemic control and reduce the frequency of hypoglycemia. A cost-effectiveness analysis of SAP?+?LGS vs CSII plus self-monitoring of blood glucose (SMBG) was performed to determine the health economic benefits of SAP?+?LGS in type 1 diabetes patients using CSII in the UK.

Methods:

Cost-effectiveness analysis was performed using the CORE diabetes model. Treatment effects were sourced from the literature, where SAP?+?LGS was associated with a projected HbA_1c reduction of ?1.49% vs ?0.62% for CSII, and a reduced frequency of severe hypoglycemia. The time horizon was that of patient lifetimes; future costs and clinical outcomes were discounted at 3.5% and 1.5% per annum, respectively.

Results:

Projected outcomes showed that SAP?+?LGS was associated with higher mean quality-adjusted life expectancy (17.9 vs 14.9 quality-adjusted life years [QALYs], SAP?+?LGS vs CSII), and higher life expectancy (23.8 vs 21.9 years), but higher mean lifetime direct costs (GBP 125,559 vs GBP 88,991), leading to an incremental cost-effectiveness ratio (ICER) of GBP 12,233 per QALY gained for SAP?+?LGS vs CSII. Findings of the base-case analysis remained robust in sensitivity analyses.

Conclusions/interpretation:

For UK-based type 1 diabetes patients with poor glycemic control, the use of SAP?+?LGS is likely to be cost-effective compared with CSII plus SMBG.     

Is education the panacea for economic deprivation of Muslims?: Evidence from wage earners in India, 1987–2005

Few researchers have examined the nature and determinants of earnings differentials among religious groups, and none has been undertaken in the context of conflict-prone multi-religious societies like the one in India. We address this lacuna in the literature by examining the differences in the average log earnings of Hindu and Muslim wage earners in India, during the 1987–2005 period. Our results indicate that education differences between Hindu and Muslim wage earners, especially differences in the proportion of wage earners with tertiary education, are largely responsible for the differences in the average log earnings of the two religious groups across the years. By contrast, differences in the returns to education do not explain the aforementioned difference in average log earnings. In conclusion, we discuss some policy implications.     

Where is the Security Blanket? Developing Social Media Marketing Capability as a Shield from Perceived Cybersecurity Risk

Although cybersecurity is important for any organization, firms have little understanding of the ramifications of perceived cybersecurity risk and how marketers can avert its negative marketing outcomes. The inability of firms to prevent massive data breaches in the recent past has heightened cybersecurity risk perceptions of customers and cybersecurity-related marketing challenges and opportunities. This study links cybersecurity risk with firm risk through firm reputation by developing a conceptual framework grounded in perceived risk theory in conjunction with dynamic capabilities and social network theoretical perspectives. Our findings show that social media marketing capabilities enable firms in mitigating the adverse impact of cybersecurity risk in declining firm reputation and value. Thus, this study provides significant implications for marketing theory and practice.     

Face Value: Information and Signaling in an Illegal Market

Economists argue that rich information environments and formal enforcement of contracts are necessary to prevent market failures when information asymmetries exist. We test for the necessity of formal enforcement to overcome the problems of asymmetric information by estimating the value of information in an illegal market with a particularly rich information structure: the online market for male sex work. We assemble a rich data set from the largest and most comprehensive online male sex worker Web site to estimate the effect of information on pricing. We show how clients of male sex workers informally police the market in a way that makes signaling credible. Using institutional knowledge, we identify the specific signal male sex workers use to communicate quality to clients: face pictures. We find that there is a substantial return to the signal in this market. The findings provide novel evidence on the ability of rich information environments to overcome problems of asymmetric information without formal enforcement mechanisms.     

EARNINGS DIFFERENCES BETWEEN CHINESE AND INDIAN WAGE EARNERS, 1987–2004

This paper is one of the first comprehensive attempts to compare earnings in urban China and India over the recent period. While both economies have grown considerably, we illustrate significant cross-country differences in wage growth since the late 1980s. For this purpose, we make use of comparable datasets, estimate Mincer equations and perform Oaxaca–Blinder decompositions at the mean and at different points of the wage distribution. The initial wage differential in favor of Indian workers, observed in the middle and upper part of the distribution, partly disappears over time. While the 1980s Indian premium is mainly due to higher returns to education and experience, a combination of price and endowment effects explains why Chinese wages have caught up, especially since the mid-1990s. The price effect is only partly explained by the observed convergence in returns to education; the endowment effect is driven by faster increase in education levels in China and significantly accentuates the reversal of the wage gap in favor of this country for the first half of the wage distribution.     

“Lifestyle Leapfrogging” in Emerging Economies: Enabling Systemic Shifts to Sustainable Consumption

This paper combines the concept of leapfrogging with systems-thinking approaches to outline the potentials for and barriers to enabling systemic shifts to strong sustainable consumption in the emerging economies of China and India. New urban consumers in China and India have the potential to “lifestyle leapfrog” the high impact lifestyle models of the industrialized countries while simultaneously improving their quality of life. This paper argues that by implementing systemic approaches in the consumption domains of mobility and housing, the historical trajectory of high environmental footprints of mobility and housing can be avoided. The analysis based on systems-thinking principles identifies existing barriers and possible solutions. The importance of policies for strong sustainable consumption is highlighted to induce positive feedbacks in the areas of markets and society facilitating both efficient technology uptake and behavioural changes.     

Effect of consumer sentiment on hospitality expenditures and stock returns

Given the importance of consumers to the U.S. economy and especially to the hospitality industry, we explore how consumer sentiment (i.e. confidence in the economy) affects consumption expenditures and stock returns in the hospitality industry.We find that not only does consumer sentiment partly predict changes in future consumption expenditures, but changes in consumer sentiment are contemporaneously related to hospitality industry stock returns. More importantly, our results indicate that changes in consumer sentiment can partly predict changes in stock prices of hospitality firms, an indicator of firm performance. The predictive ability of consumer sentiment can thus be useful to managers in business forecasting, planning, and strategizing for profit maximization.