Using FRED data to teach price elasticity of demand

In this article, the authors discuss the use of Federal Reserve Economic Data (FRED) statistics to teach the concept of price elasticity of demand in an introduction to economics course. By using real data in its computation, they argue that instructors can create a value-adding context for illustrating and applying a foundational concept in economics. Additionally, this pedagogical strategy contributes to developing an expected proficiency for economics majors related to “interpreting and manipulating data” (Hansen 2009, 2012). The authors provide step-by-step instructions on how to use FRED to compute the price elasticity of demand for motor vehicle fuels and gasoline as well as examples of in-class discussion questions and take-home assignments related to this instructional technique.     

Type of diversification and firm resources: new empirical evidence from the Spanish tourism industry

This paper analyses the diversification strategies followed by tourism firms from the perspective of the resource‐based view. More specifically, it seeks to verify whether the composition of the firms' resources has a bearing on the decision to undertake one type of diversification or another (related or unrelated). From a mail survey to 80 Spanish tourism firms, we identified 94 entries into new business areas. We applied an ordered logit regression and have statistically confirmed that intangible resources lead to a more related type of diversification. Copyright © 2008 John Wiley & Sons, Ltd.     

A confirmatory analysis of the unit root hypothesis for OECD consumption-income ratios

This article investigates the existence of a unit root in the consumption-income ratio for a sample of 23 OECD countries over the period 1960 to 2005. For that purpose, we first use recently developed unit root tests with good size and power. Second, we employ the more powerful panel unit root tests of Pesaran (2003 Pesaran, MH. 2003. A Simple Panel Unit Root Test in the Presence of Cross-Section Dependence mimeo, Cambridge University [Google Scholar]) and Smith et al . (2004) that take the null of nonstationarity and a bootstrap version of the test of Hadri (2000 Hadri, K. 2000. Testing for stationarity in heterogeneous panel data. The Econometrics Journal, 3: 148–61. [Crossref] , [Google Scholar]) that takes stationarity as the null hypothesis. Overall, our confirmatory analysis renders clear-cut evidence that OECD consumption-income ratios contain a unit root.     

The Influence of Innovative Organizational Culture on Marketing Strategy Formulation and Results

ABSTRACT

This article's objective is to analyze the influence innovative organizational culture has on marketing strategy formulation and results, and how this relationship affects organizational performance. The theoretical basis lies in Menon et al.'s (1999 Menon , A. , Bharadwaj , S. G. , Adidam , P. T. , and Edison , S. W. ( 1999 ). Antecedents and consequences of marketing strategy making: A model and a test . Journal of Marketing , 63 , 18 – 40 .[Crossref], [Web of Science ®] , [Google Scholar]) model. The methodology included a survey with medium to large Brazilian companies in different sectors. The final sample consisted of 153 questionnaires that were valid for analysis. Techniques for statistical analysis including singular and multivariate methods were used, from which the relationships between constructs were established by structural equation modeling. Results show a positive relationship between innovative organizational culture, the marketing strategy process, and organizational performance. However, innovative culture does not have a direct influence on performance.     

The economics of professional services: lemon markets, credence goods, and C2C information sharing

We discuss how professional service markets are plagued by asymmetric information, by looking jointly at the literature stemming from the seminal work of Akerlof on the “market of lemons”, and at the definition of “credence good” which has been developed especially within the field of health economics. Since consumers cannot evaluate ex post the quality of purchased professional services when these are “credence goods”, they cannot rely with 100 % confidence on other consumers’ and experts’ signals about service providers’ quality. Hence, questions arise on the effectiveness of traditional market features highlighted in literature as market-enhancing when information asymmetry is an issue, namely: advertising, certification, reputation, and liability. Our analysis specifically focuses on consumer-provided knowledge by looking at recent development of Web-based rating and reviewing services. Results point to the fact that consumers in the U.S. heavily rely on such services, and they do so roughly in proportion to their consumption of each professional sector. Therefore, future research on professional services should include a “C2C search technology” when modeling consumer behaviors that allows to define how much each professional service is to be considered as pure or hybrid “credence good.”     

A virtual voyage through 3D structures generated by chaotic mixing of magmas and numerical simulations: a new approach for understanding spatial and temporal complexity of magma dynamics

In this contribution, we present a virtual voyage through 3D structures generated by chaotic mixing of magmas and numerical simulations with the aim to highlight the power of 3D representations in the understanding of this geological phenomenon. In particular, samples of mixed juveniles from Salina island (Southern Italy) are reconstructed in 3D by serial lapping and digital montage and numerical simulations are performed by using a 3D chaotic dynamical system. Natural and simulated magma mixing structures are visualized by using several multimedia tools including animations and “virtual reality” models. It is shown that magma interaction processes can generate large spatial and temporal compositional heterogeneities in magmatic systems. The same topological structures are observed in both 3D reconstructed rock samples and chaotic numerical simulations, indicating that the mixing of magmas is governed by chaotic dynamics. The use of 3D multimedia models gives the opportunity to penetrate into magma mixing structures and to understand their significance in the context of magma dynamics. Such an approach is very powerful since multimedia tools can strongly capture the attention of the reader bringing him/her into an interactive and memorable geological experience.     

Asymmetric Price Adjustments in Airlines

This paper uses a unique daily time series data set to investigate the asymmetric response of airline prices to capacity costs driven by demand fluctuations. We use a Markov regime‐switching model with time‐varying transition probabilities to capture the time variation in the response. The results show strong evidence of asymmetric price adjustments: positive cost shifts have a large positive effect, whereas negative cost shifts have no effect. The asymmetry is also explained by summer travel but not by the size of cost shifts. The findings show the importance of consumer heterogeneity and capacity constraints as a source of asymmetric responses. Copyright © 2012 John Wiley & Sons, Ltd.     

Environmental externalities and regulation constrained cost productivity growth in the US electric utility industry

This paper examines whether having to comply with Phase 1 of Title IV of the 1990 Clean Air Act, and rate of return regulation, each impacted the rate of total factor productivity (TFP) growth when accounting for the production of good and bad outputs. Phase 1, effective from 1995 to 1999, requires electric utilities to reduce their emissions of sulfur dioxide and nitrogen oxide (bad outputs). Actions undertaken to reduce the emissions (using less sulfur content coal, installing equipment), may have led to higher production costs, and impacted the rate of TFP growth. Rate regulation may impact how the firm produces its selected output level, which could lead to higher cost over time, and biased estimates of TFP growth. Following the work of Ball et al. (Struct Change Econ Dyn 16(3): 374–394, 2005), who developed the standard Malmquist cost productivity (MCP) index, we develop a MCP index for a rate regulated firm (RMCP index) then use the standard and regulated indices to determine whether having to comply with Phase 1 impacted TFP growth. Empirical results indicate that (i) the RMCP index underestimated the rate at which TFP growth occurred, (ii) Phase 1 utilities on average experienced positive TFP growth from 1996 to 2000 (Phase 1 firms experienced higher TFP growth rates than the rates experienced by firms not subject to Phase 1), and operated more allocatively inefficient in complying with the Phase 1 restrictions. Complying with Phase 1 did not affect the rate at which technical change occurred or the rates of change in scale efficiency.     

Null models of economic networks: the case of the world trade web

In all empirical-network studies, the observed properties of economic networks are informative only if compared with a well-defined null model that can quantitatively predict the behavior of such properties in constrained graphs. However, predictions of the available null-model methods can be derived analytically only under assumptions (e.g., sparseness of the network) that are unrealistic for most economic networks like the world trade web (WTW). In this paper we study the evolution of the WTW using a recently-proposed family of null network models. The method allows to analytically obtain the expected value of any network statistic across the ensemble of networks that preserve on average some local properties, and are otherwise fully random. We compare expected and observed properties of the WTW in the period 1950–2000, when either the expected number of trade partners or total country trade is kept fixed and equal to observed quantities. We show that, in the binary WTW, node-degree sequences are sufficient to explain higher-order network properties such as disassortativity and clustering-degree correlation, especially in the last part of the sample. Conversely, in the weighted WTW, the observed sequence of total country imports and exports are not sufficient to predict higher-order patterns of the WTW. We discuss some important implications of these findings for international-trade models.