On the measurement of corporate diversification strategy: Evidence from large U.S. service firms

Actual, not potential, relatedness determines the results of diversification strategies. An external examination of a firm's businesses, products, markets and technologies permits an assessment of potential relatedness among its various businesses. Potential relatedness is, however, often not realized. Also, relatedness may be externally invisible. Hence, actual relatedness may diverge from externally measured potential relatedness. This paper provides evidence suggesting that measures of corporate diversification strategy based on internal data differ significantly from those based on externally available data.     

1991 Silver Plate winners. This year's nine IFMA award winners talk pride, politics and the future of the foodservice profession

What challenges lie ahead for the food-service industry? All nine candidates for the International Foodservice Manufacturers Association's 1991 Gold Plate share their views on building staff unity, improving government relations and other critical issues.     

Exploring de-facto accountability regimes in Muslim NGOs

This paper aims to deepen and advance our understanding of the de-facto accountability processes and practices within Muslim non-governmental organisations (NGOs). We employ a three-fold accountability framework of felt, imposed and adaptive accountability, supported by insight from the Islamic perspective to elucidate our empirical findings. We adopt this framework because it enables us to localise the notions of accountability, allowing a more complete understanding of the de-facto nature of Muslim NGO accountability to emerge within the context of religious ideals and between accountabilities that are externally imposed and those that are internally generated.     

The future of technology and marketing: a multidisciplinary perspective

Journal of the Academy of Marketing Science -     

Herding behaviour and the declining value relevance of accounting information: evidence from an emerging stock market

This article sheds light on the underlying mechanisms behind the changes in the value relevance of accounting information in the Karachi Stock Exchange (KSE) during the 1999–2010 period. We find that neither changes in earnings quality nor the earnings lack of timeliness hypothesis can explain the decline in the value relevance of accounting information in the KSE. Based on the stylized facts associated with the growth of the KSE and the broader economics literature, we argue that the reduction in the explanatory power of accounting information vis-à-vis stock returns was caused by herding behaviour. Empirical estimates from state-space model of herding behaviour confirm the existence of herding, and we find that the value relevance of accounting information is significantly lower in periods characterized by herding behaviour. This article is also amongst the first attempts to empirically demonstrate that an expansionary monetary policy and increases in foreign portfolio investment lead to increased levels of herding.     

The impact of collinearity on regression analysis: the asymmetric effect of negative and positive correlations

The purpose of this paper is to ascertain how collinearity in general, and the sign of correlations in specific, affect parameter inference, variable omission bias, and their diagnostic indices in regression. It is found that collinearity can reduce parameter variance estimates and that positive and negative correlation structures have an asymmetric effect on variable omission bias. It is also shown that the effects of collinearity are moderated by the relationship between the dependent variable and the regressors, a consideration not incorporated into most commonly used collinearity diagnostics. The formulae derived enable researchers to assess the sensitivity of regression results to the underlying correlation structure in the data.     

Investment decisions in the wireless industry applying real options

The wireless industry is one of the most capital intensive high-technology industries. This paper applies real options techniques to estimate investments under uncertainty in two new ventures: (a) deferral of the expansion from 2.5G to 3G networks; and (b) expansion of a 2.5G network using Wi-Fi as an alternative technology. The cases are examined and analyzed both qualitatively and quantitatively, using realistic assumptions and parameters. Investment cost, number of subscribers, pricing of services, and risk are at the core of investment decision processing. In both cases, sensitivity analysis of the value of the (real) option considering the above key parameters was conducted, to extrapolate useful findings that should be taken into consideration by the decision makers in wireless companies.     

LIQUIDITY AND MATURITY EFFECTS AROUND NEWS RELEASES

We study the effects of liquidity and term-to-maturity following macroeconomic news announcements. To do this we select five instruments that differ in liquidity, or term-to-maturity, or both, and examine their response to the release of macroeconomic news. The results from this study suggest that variance on announcement days is higher in more liquid, longer term-to-maturity instruments. When instruments differ in both term-to-maturity and liquidity, term-to-maturity effects dominate. Tests for persistence in higher volatility in the five instruments following news releases show that most of the effects of the announcements seem to be well absorbed within fifteen minutes of the announcements. However, the evidence also suggests that the effects persist for longer periods in instruments that are more liquid. Term-to-maturity appears to have little or no effect in this instance.     

Decision delegation: A conceptualization and empirical investigation

This paper examines a purchase context in which consumers, instead of deciding on their own, delegate either a part of or the entire purchase decision to a surrogate. A path model linking the antecedent variables and delegation is tested in the context of personal computer purchases. It was found that the factors that ensure decision quality emanating from the surrogate's expertise differentials, trustworthiness, accountability, and willingness to customize increase the likelihood of decision delegation. In addition to its direct positive effect on delegation, trustworthiness mediates the effect of expertise difference, surrogate accountability, and customization on delegation. Perceived loss of control inhibits delegation, but only at the stage when the final choice decision is made. Also, if a decision task is repeatable, the high return on effort has a negative effect on delegation, but only at attribute set and choice set delegations. Contributions of the study and directions for future research are discussed. © 2008 Wiley Periodicals, Inc.