Exploratory structural equation modeling,bifactor models,and standard confirmatory factor analysis models: Application to the BASC-2 Behavioral and Emotional Screening System Teacher Form

Several psychological assessment instruments are based on the assumption of a general construct that is composed of multiple interrelated domains. Standard confirmatory factor analysis is often not well suited for examining the factor structure of such scales. This study used data from 1885 elementary school students (mean age = 8.77 years, SD = 1.47 years) to examine the factor structure of the Behavioral Assessment System for Children, Second Edition (BASC-2) Behavioral and Emotional Screening System (BESS) Teacher Form that was designed to assess general risk for emotional/behavioral difficulty among children. The modeling sequence included the relatively new exploratory structural equation modeling (ESEM) approach and bifactor models in addition to more standard techniques. Findings revealed that the factor structure of the BASC-2 BESS Teacher Form is multidimensional. Both ESEM and bifactor models showed good fit to the data. Bifactor models were preferred on conceptual grounds. Findings illuminate the hypothesis-generating power of ESEM and suggest that it might not be optimal for instruments designed to assess a predominant general factor underlying the data.     

Defining Muslims on the Afghan Frontier: T. P. Hughes and His Dictionary of Islam

ABSTRACT

Christian missionaries working in India in the nineteenth century made numerous important contributions to European and North American understandings of Islam. One such contribution was the Dictionary of Islam compiled by the Anglican missionary Thomas Patrick Hughes, who was serving in Peshawar on the border between British India and Afghanistan. Drawing upon sources such as collections of Hadith, he provided both brief definitions and some longer analyses of a wide range of aspects of Muslim beliefs, practices and history. However, his compilation was not entirely based on textual sources, but was also informed by daily contact with Muslims in and around Peshawar, particularly Maulavi Ahmad of Tangi. Hughes combined his interest in defining Islam with a passion for exploring and explaining Afghan culture and politics to his readership in Britain. Although situated on ‘the edges of empire’, Hughes nonetheless found himself at the centre of world events as the intrigue between Britain and Russia resulted in the Second Anglo-Afghan War. Although located in what some considered a minor province on the periphery of the Muslim world, he nonetheless produced a major reference work on Islam that is still in print.     

From Blickets to Synapses: Inferring Temporal Causal Networks by Observation

How do human infants learn the causal dependencies between events? Evidence suggests that this remarkable feat can be achieved by observation of only a handful of examples. Many computational models have been produced to explain how infants perform causal inference without explicit teaching about statistics or the scientific method. Here, we propose a spiking neuronal network implementation that can be entrained to form a dynamical model of the temporal and causal relationships between events that it observes. The network uses spike‐time dependent plasticity, long‐term depression, and heterosynaptic competition rules to implement Rescorla–Wagner‐like learning. Transmission delays between neurons allow the network to learn a forward model of the temporal relationships between events. Within this framework, biologically realistic synaptic plasticity rules account for well‐known behavioral data regarding cognitive causal assumptions such as backwards blocking and screening‐off. These models can then be run as emulators for state inference. Furthermore, this mechanism is capable of copying synaptic connectivity patterns between neuronal networks by observing the spontaneous spike activity from the neuronal circuit that is to be copied, and it thereby provides a powerful method for transmission of circuit functionality between brain regions.     

Shyness as a risk factor for second language acquisition of immigrant preschoolers

The aim of this study was to examine whether shyness is a risk factor for second language acquisition in immigrant preschoolers. Results from studies on first language acquisition indicate that shy children show less favorable language development; however, it remains unclear how shyness affects second language acquisition. As second language skills are often acquired in interactions outside the family where shyness is more evident, we postulate that shyness has a strong negative effect on second language acquisition. This hypothesis was examined using standardized tests and parental ratings in a sample of 330 immigrant preschoolers cross-sectionally and with 130 immigrant preschoolers longitudinally. The analyses revealed lower second language competence as well as slower language development in shy immigrant children compared to their non-shy counterparts. The present study highlights that not only contextual but also personality factors need to be considered for a comprehensive understanding of second language acquisition in immigrant children.     

Sociolinguistic awareness and false belief in young Cantonese learners of English

In this study, we examined whether sociolinguistic awareness and false belief were uniquely related in 3- and 4-year-old Cantonese-speaking children learning English as a second language. The English-use background of these children varied so that they possessed sociolinguistic awareness to different degrees. Results indicated that sociolinguistic awareness predicted false belief uniquely after controlling for age, nonverbal intelligence, English vocabulary, and family income for both the second language learners and the more balanced bilinguals. The group difference in false belief was adequately explained by the corresponding difference in sociolinguistic awareness over and above the other variables. Such findings provide evidence for the claim that false belief understanding is critically related to sociolinguistic awareness, which in turn is influenced by how a second language is learned.     

Factor Structure of the Beck Depression Inventory—II in a Medical Outpatient Sample

This study examined the factor structure of the Beck Depression Inventory—II (BDI-II) in a sample of 127 individuals referred by their primary care physicians. Using exploratory factor analysis with oblique rotation, a 2-factor model appeared to be the most parsimonious representation of the data. The rotated factors accounted for approximately 53% of the variance. Consistent with previous research, the first factor was interpreted as a somatic–affective dimension and the second factor reflected a cognitive dimension. The correlation between these 2 factors was .79. It appears possible to divide the BDI-II into subscales to facilitate interpretation in medical patients.     

Adverse psychological outcomes in colorectal cancer screening: does health anxiety play a role?

People who are anxious about their health are more likely to misinterpret health information as personally threatening and less likely to be reassured by medical investigations that show they are free from disease. Consequently, health anxious people would be expected to react more adversely to cancer screening, but this possibility has rarely been explored. The moderating role of health anxiety on the psychological impact of participating in colorectal cancer screening was examined among a sub-sample of 3535 participants in a large, community-based trial of colorectal cancer screening in the UK. The screening modality was flexible sigmoidoscopy, which examines the bowel for pre-cancerous polyps. It was predicted that health anxiety would be associated with more worry about cancer before screening, a greater increase in worry if polyps were detected, and less reassurance after a clear result. As expected, health anxious participants were more anxious and more worried about bowel cancer both before and after screening. However, they experienced greater reductions in anxiety and worry about cancer following the examination. They reported lower levels of reassurance following screening, but also expressed more positive reactions to the experience. The positive psychological benefits of attending medical investigations should be examined in future work, because this may go some way towards explaining why health anxious people repeatedly seek medical interventions.     

The Relationship Between Artificial and Second Language Learning

Artificial language learning (ALL) experiments have become an important tool in exploring principles of language and language learning. A persistent question in all of this work, however, is whether ALL engages the linguistic system and whether ALL studies are ecologically valid assessments of natural language ability. In the present study, we considered these questions by examining the relationship between performance in an ALL task and second language learning ability. Participants enrolled in a Spanish language class were evaluated using a number of different measures of Spanish ability and classroom performance, which was compared to IQ and a number of different measures of ALL performance. The results show that success in ALL experiments, particularly more complex artificial languages, correlates positively with indices of L2 learning even after controlling for IQ. These findings provide a key link between studies involving ALL and our understanding of second language learning in the classroom.