One traditional way to reduce the dimensionality of the data is to use some variant of principle component analysis, a technique that permits us to determine which traits are related. Nevertheless, if we wish to determine which societies are the most similar or different using the results of the derived principle components, difficulties begin to arise because, according to one factor, two soci...

The purpose of this research was to develop an instrument to assess people’s fluency with the computer, e-mail, and the Web (CEW fluency). Such an instrument, tapping into digital divides, could fill the existing void that exists between previously developed computer literacy or experience scales and the ever faster development of Internet technology. The research was conducted in 2 stages. The...

Several criteria for orthogonal factor rotation are presented and evaluated. They include one or an equally weighted combination of up to three computation rules. The computation rules are Carroll’s (1953) rule, the rule which is complementary to Carroll’s rule as well as a rule constructed according to the expert’s ability to select the most appropriate configuration of high loadings in consid...

Objective: The purpose of this study was to develop a career-orientation scale for public health nurses (PHNs) and to validate the scale. Methods: Self-administered questionnaires were sent to 7170 PHNs in 10 prefectures. A retest survey was sent to 252 participants. Results: The valid responses from 2003 PHNs in the first survey were analyzed for major factors by varimax rotation. The analysis...

university of tehran administers a test known as the university of tehran english proficiency test (the utept) to phd candidates on a yearly basis. by definition, the test can be considered a high-stakes one. the validity of high stakes tests needs to be known (roever, 2001). as mesick (1988) maintains, if the validity of high stakes tests are not known, it might have some undesirable consequen...

Objectives: Emotional regulation refers to strategies that reduce, maintain or increase an emotion in people. The purpose of this study is to standard the Cognitive Emotion Regulation Questionnaire in Tehran aged population. Methods: The sample was selected randomly from 20 Jahandidhgan associations and consisted of 500 aged people from whom 338 people remained till the end of study. In orde...

Principal component analysis provides a fast and robust method to reduce the data dimensionality of an aerosol size distribution data set. Here we describe a methodology for applying principal component analysis to aerosol size distribution measurements. We illustrate the method by applying it to data obtained during five field studies. Most variations in the sub-micrometer aerosol size distrib...

This study examined dimensions of student engagement in technology rich classrooms and the relationship of this engagement to professors’ conceptions of effective teaching. We collected questionnaire data from 332 students and analysed the data in relation to the finding of another study (Authors, forthcoming) involving 13 professors’ coursespecific conceptions of effective teaching. Principal ...