Structural equation modeling (SEM) is a multivariate statistical framework that is used to model complex relationships between directly observed and indirectly observed (latent) variables. SEM is a general framework that involves simultaneously solving systems of linear equations and encompasses other techniques such as regression, factor analysis, path analysis, and latent growth curve modeling. Recently, SEM has gained popularity in the analysis of complex genetic traits because it can be used to better analyze the relationships between correlated variables (traits), to model genes as latent variables as a function of multiple observed genetic variants, and to assess the association between multiple genetic variants and multiple correlated phenotypes of interest. Though the general SEM framework only allows for the analysis of independent observations, recent work has extended SEM for the analysis of data on general pedigrees. Here, we review the theory of SEM for both unrelated and family data, describe the available software for SEM, and provide examples of SEM analysis.

Structural Equation Modeling

Evidence exists that service quality delivery through Web sites is an essential strategy to success, possibly more important than low price and Web presence. To deliver superior service quality, managers of companies with Web presences must first understand how customers perceive and evaluate online customer service. Information on this topic is beginning to emerge from both academic and practitioner sources, but this information has not yet been examined as a whole. The goals of this article are to review and synthesize the literature about service quality delivery through Web sites, describe what is known about the topic, and develop an agenda for needed research.

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Service Quality Delivery Through Web Sites: A Critical Review of Extant Knowledge

This sales letter may not influence you to be smarter, but the book that we offer will evoke you to be smarter. Yeah, at least you'll know more than others who don't. This is what called as the quality life improvisation. Why should this research methods in social relations? It's because this is your favourite theme to read. If you like this theme about, why don't you read the book to enrich your discussion?

Research methods in social relations

eTailQ: dimensionalizing, measuring and predicting etail quality

The authors examine the implications of electronic shopping for consumers, retailers, and manufacturers. They assume that near-term technological developments will offer consumers unparalleled opportunities to locate and compare product offerings. They examine these advantages as a function of typical consumer goals and the types of products and services being sought and offer conclusions regarding consumer incentives and disincentives to purchase through interactive home shopping vis-à-vis traditional retail formats. The authors discuss implications for industry structure as they pertain to competition among retailers, competition among manufacturers, and retailer-manufacturer relationships.

Interactive home shopping: Consumer, retailer, and manufacturer incentives to participate in

It is a marketplace reality that marketing managers sometimes inflict switching costs on their customers, to inhibit them from defecting to new suppliers. In a competitive setting, such as the Internet market, where competition may be only one click away, has the potential of switching costs as an exit barrier and a binding ingredient of customer loyalty become altered? To address that issue, this article examines the moderating effects of switching costs on customer loyalty through both satisfaction and perceived-value measures. The results, evoked from a Web-based survey of online service users, indicate that companies that strive for customer loyalty should focus primarily on satisfaction and perceived value. The moderating effects of switching costs on the association of customer loyalty and customer satisfaction and perceived value are significant only when the level of customer satisfaction or perceived value is above average. In light of the major findings, the article sets forth strategic implications for customer loyalty in the setting of electronic commerce. © 2004 Wiley Periodicals, Inc.

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Customer perceived value, satisfaction, and loyalty: The role of switching costs

The purpose of this paper is to set forth a reliable and valid means of measuring online service quality based on a broad conceptual framework which integrates theory and conceptualization in customer service quality, information systems quality, and product portfolio management, into online service quality An ethnographic content analysis of 848 customer reviews of online banking services was employed to identify salient online service quality dimensions The most frequently cited online service quality attributes, along with literature review and personal interview results, were utilized to develop the survey questionnaire Subsequent to the pre‐test, a Web‐based survey was undertaken to verify and test the online service quality model A confirmatory factor analysis produced six key online service quality dimensions: reliability, responsiveness, competence, ease of use, security, and product portfolio This paper includes a discussion of the managerial and theoretical implications of this online service quality model

Measuring customer perceived online service quality: Scale development and managerial implications

The purpose of this article is to extend what is know about service quality in realm of the context of Internet retailing. As a result of content analyzing 1,078 consumer anecdotes of online shopping experiences, 14 service quality dimensions representing 42 items were identified. The unique contents of each service quality dimension relate to Internet commerce are examined and discussed. Further, the analysis uncovered a number of contributors to consumer satisfaction and dissatisfaction. The most frequently‐mentioned service attributes resulting in consumer satisfaction were responsiveness, credibility, ease of use, reliability, and convenience. On the other hand, different dimensions including responsiveness, reliability, ease of use, credibility, and competence, were likely to dissatisfy online consumers. Finally, this paper provides various managerial implications and recommendations which may suggest avenues for improving service quality in Internet retailing and, as a corollary, expanding experiences by consumers.

Services quality dimensions of Internet retailing: an exploratory analysis

Like most businesses, online pharmacy companies will only be successful if they make sure customers are satisfied with the service they receive. But what attributes of service quality lead to satisfaction and dissatisfaction? This study identified 19 Internet pharmacy service quality dimensions in three categories: (1) product cost and availability, (2) customer service, and (3) the online information system. Our analysis uncovered attributes that tend to determine consumer satisfaction and points out ways to improve overall service quality in the Internet pharmacy arena.

Taking the pulse of Internet pharmacies.

The identification and measurement of service quality are critical factors that are responsible for customer satisfaction. This article identifies 11 attributes that define quality of care and patient satisfaction and reveals various gaps among the patient, physician, and administrator groups in the

Robin T. Peterson

Papers

Customer perceived value, satisfaction, and loyalty: The role of switching costs

Measuring customer perceived online service quality: Scale development and managerial implications

Services quality dimensions of Internet retailing: an exploratory analysis

Taking the pulse of Internet pharmacies.

The identification and measurement of quality dimensions in health care: focus group interview results.