Estimating Between-Person and Within-Person Subscore Reliability with Profile Analysis

Subscores are of increasing interest in educational and psychological testing due to their diagnostic function for evaluating examinees' strengths and weaknesses within particular domains of knowledge. Previous studies about the utility of subscores have mostly focused on the overall reliability of individual subscores and ignored the fact that subscores should be distinct and have added value over the total score. This study introduces a profile reliability approach that partitions the overall subscore reliability into within-person and between-person subscore reliability. The estimation of between-person reliability and within-person reliability coefficients is demonstrated using subscores from number-correct scoring, unidimensional and multidimensional item response theory scoring, and augmented scoring approaches via a simulation study and a real data study. The effects of various testing conditions, such as subtest length, correlations among subscores, and the number of subtests, are examined. Results indicate that there is a substantial trade-off between within-person and between-person reliability of subscores. Profile reliability coefficients can be useful in determining the extent to which subscores provide distinct and reliable information under various testing conditions.     

Investigating Separate and Concurrent Approaches for Item Parameter Drift in 3PL Item Response Theory Equating

This study examines separate and concurrent approaches to combine the detection of item parameter drift (IPD) and the estimation of scale transformation coefficients in the context of the common item nonequivalent groups design with the three-parameter item response theory equating. The study uses real and synthetic data sets to compare the two approaches based on IPD flagging rates, type I error and power rates, and recovery of scale transformation coefficients. Results indicate that the two approaches render similar outcomes with stable anchor sets. However, they can produce dissimilar results with unstable anchor sets because of differences in the performance of their IPD components. Further, the findings of this study caution about working backward from equated cut scores to motivate the selection of an anchor set.     

Exploring the Relations between Cattell–Horn–Carroll (CHC) Cognitive Abilities and Mathematics Achievement

As standardized measures of cognitive abilities and academic achievement continue to evolve, so do the relations between the constructs represented in these measures. A large, nationally representative sample of school‐aged children and youth between 6 and 19 years of age (N = 4,194) was used to systematically evaluate the relations between cognitive abilities and components of academic achievement in mathematics. The cognitive abilities of interest were those identified from the Cattell–Horn–Carroll model of intelligence. Specific areas of mathematics achievement included math calculation skills and math problem solving. Results suggest that fluid reasoning (Gf), comprehension‐knowledge (Gc), and processing speed (Gs) have the strongest and most consistent relations with mathematics achievement throughout the school years.Copyright © 2017 John Wiley & Sons, Ltd.     

Religion and Assimilation Among Turkish Muslim Immigrants: Comparing Practicing and Non-Practicing Muslims

In the literature on religion and assimilation, Muslims are usually categorized into one group without any reference to their differences in terms of religious practice and ethnicity. This paper sheds light on such differences by illustrating the case of Turkish immigrants in the USA, one of the least studied immigrant groups. Based on interviews with practicing and non-practicing Turkish Muslims in Houston, we address the issue of how practices of religion play its role in the assimilation of Turkish immigrants. Data reveal that while Turks in general are fairly well adapted into American society, there are some major differences between practicing and non-practicing Turkish Muslims, even though practically all Turks identify as Muslim.     

Adaptation of a Muslim Spiritual Attachment Scale (God attachment) for Turkish Muslims: a validity and reliability study

ABSTRACT

Despite the importance of a believer’s attachment relationship with God for mental health, there are few measures relevant to Muslims, and little work on cross-cultural validation of such measures. The objective of the present study was to examine the validity and reliability of the Muslim Spiritual Attachment Scale (M-SAS) in Turkish Muslim samples. In analyzing the data, three different samples of college students (N?=?525, N?=?341, and N?=?47 respectively) were used. The validity and reliability of M-SAS were examined through exploratory factor analysis, confirmatory factor analysis, the internal consistency coefficient and the split-half reliability coefficient. Results supported a three-factor model of M-SAS with good reliability for the factors, and convergence with an alternative God Attachment measure. As a result, it may be concluded that M-SAS can be used as a valid and reliable measurement instrument in Turkish Muslim samples. The results are discussed in the light of the relevant literature.     

Hydrothermal growth of ZnO nanoparticles under different conditions

In this study, a simple low-temperature hydrothermal method was used to synthesize ZnO nanoparticles. The structural, morphological and optical characterizations of the nanoparticles were evaluated with regard to the zinc content. To achieve this, the molar ratios of the precursors were changed from 0.05 to 0.1 M. The structural and morphological analyses showed that all samples had a polycrystalline hexangular wurtzite crystal structure and the shape of the ZnO nanoparticles changed with increasing zinc content. A possible growth mechanism of the ZnO nanoparticles is explained in terms of the zinc content. Optical measurement revealed that the shape of the nanoparticles affects the position of the band-edge emission as well as the shape of the luminescence spectrum.     

Examining the role of two aspects of eWOM in online repurchase intention: An integrated trust–loyalty perspective

As electronic word‐of‐mouth (eWOM) has become an influential information resource for digital consumers who purchase products, understanding how the 2 ways of eWOM influence consumers' online repurchase intention (ORPI) becomes very pivotal. Despite its importance, there is no study in the literature that examined receiving and participating aspects of eWOM in an integrated perspective. The purpose of this study is to understand how 2 controversial eWOM aspects influence ORPI of consumers. Moreover, this study examines the mediating roles of e‐trust and e‐loyalty in the association between 2 sides of eWOM aspects and ORPI. The results indicated that 2 eWOM receiving factors, eWOM quality and eWOM quantity, have positive influences on e‐trust and ORPI. However, as an eWOM participating factor, the eWOM content has no significant influence on ORPI whereas another participating factor, the eWOM intensity, has the greatest impact on ORPI. Furthermore, the findings illustrate that e‐trust has a complementary mediation effect in the association between 2 receiving eWOM aspects and ORPI; likewise, e‐loyalty has a complementary mediation in the relationship between 2 participating eWOM aspects and ORPI.     

Which One Triggers the Other? Technological or Social Innovation

The term innovation has sometimes been used as a synonym for technological innovation until the concept of social innovation attracted academic attention. Since then, these two types of innovation have been investigated individually. It can be claimed that, despite the great importance of social innovation studies, technological innovation studies received more attention. In addition, there are limited studies that have examined technological and social innovation together. The aim of this study was to examine the causal relationship between technological and social innovations. The impact of entrepreneurial characteristics on social innovation was also analyzed. This study was based on a comprehensive field study including 767 university students from 10 universities from different regions of Turkey. Regression analyses and structural equation modeling confirmed that social and technological innovation were related to one another, and both were correlated with a particular constellation of personal characteristics.     

What Is Called Self in Educational Research and Practice?

Without a contextualized definition of self, a growing body of educational research in Asian countries attempts to measure students’ sense of self, such as self-esteem. The research is usually based on theories and measurements that characterize students as conscious and independent selves in an individualist society. This sharply contrasts with the interdependent and unconscious sense of self in a collectivist society. To avoid a misleading assessment of self, researchers and policy makers need to know how students develop a self-construal in a sociocultural context. Therefore, this review of the cultural differences aims to provide a multifaceted definition of self.