In recent years, social network sites exploded in popularity and become an important part of the online activities on the web. This success is related to the various services/functionalities provided by each site (ranging from media sharing, tagging, blogging, and mainly to online social networking) pushing users to subscribe to several sites and consequently to create several social networks f...

In this paper two major models for three-way profile data, i.e., the Parafac model and the Tucker3 model are discussed from the point of view of application. Topics treated are handling the data before analysis, model choice, choice of dimensionality, model fit, algorithmic hazards during the analyses, and interpretation and validation of the results. These issues are discussed in some detail s...

Groups don't become teams because that is what someone calls them. Nor do teamwork values by themselves ensure team performance. So what is a team? How can managers know when the team option makes sense and what they can do to ensure team success? In this article, drawn from their recent book The Wisdom of Teams, McKinsey partners Jon Katzenbach and Douglas Smith answer these questions and outl...

EDITOR—A ban of a medical intervention would never be supported on the basis of such meagre evidence as used by Waterston to support a ban of the parental intervention of smacking.1 “Significant adverse effects” and a failure to “learn the desired behaviour” were based on a literature review that is unpublished2 and that includes studies that included severe types of corporal punishment such as...

test method facet is one of the factors which can have an influence on the test takers’ performance. the purpose of the current study was to investigate the effects of two different response types, multiple-choice cloze and multiple-choice test, on the pre-intermediate and intermediate test takers’ reading comprehension performance. to this end, 40 pre-intermediate and intermediate learners par...

The perceived public transport quality is an important driver that influences both customer satisfaction and mobility choices. The competition among transport operators needs to improve the quality of the services and identify which attributes are perceived as relevant by passengers. Among the “traditional” public transport quality attributes there are, for example: travel and waiting time, reg...