On Fitting a Multivariate Two-Part Latent Growth Model

The purpose of this study was to explore the influence of the number of targets specified on the quality of exploratory factor analysis solutions with a complex underlying structure and incomplete substantive measurement theory. Three Monte Carlo studies were performed based on the ratio of the number of observed variables to the number of underlying factors. Within each study, communality, sample size, and the number of targets were manipulated. Outcomes included a measure of congruence and a measure of variability with regard to the rotated pattern matrix. The magnitude of the main effect for the influence of the number of targets on congruence and variability ranged from moderate to large. The magnitude of the interaction between the number of targets and level of communality ranged from small to moderate with regard to congruence and variability. Consistent with theoretical expectations, the minimum number of targets to specify to be reasonably assured of obtaining an accurate solution varied across study conditions.     

Practitioners' Perspectives of Collaboration: A Social Validation and Factor Analysis

This investigation was designed to socially validate the characterization and operational definitions of collaboration as described in the professional literature and quantitatively identify salient features of collaboration. The study was conducted in two phases. The first phase employed an adelphi methodology asking practitioners to define and describe the collaborative process. Open-ended surveys were sent to teachers, special education teachers, administrators, and related service providers at the building, district, and state levels in 3 states representing distinct national regions. A content analysis team identified 35 thematic units that were used to create a second instrument for the second phase of the study, a factor analysis. Surveys were sent to teachers, special educators, administrators, and related service providers at the building, district, and state levels in 7 states. A factor analysis revealed 4 factors as salient components of collaboration. Results of the investigation socially validated most concepts of collaboration articulated in the literature. Overall, practitioners have a pragmatic view of the process of collaboration coupled with an emphasis on the collaborative ethic. Each identified factor is described and discussed. This article concludes with implications of these findings for professional preparation programs.     

Context in Methods Course Learning: Lessons for partnership work

Teacher education programs are being encouraged to collaborate with K‐12 partners to develop and implement contextually rich field experiences that integrate methods course instruction with public school practices. As a result, we outline four models of integrating methods instruction and field experiences and raise the question “How does the classroom and school context of the field experience influence what prospective teachers learned in the methods courses?” This study examines the way two different cohorts of prospective elementary teachers who learned to teach in two different contexts define their own social studies pedagogical content knowledge. The students' espoused philosophies of education offer insight into how different models of integrated field experiences may impact on their beliefs about social studies teaching. Through this study we raise questions that should be considered in constructing methods courses linked to field experiences and suggest Bronfenbrenner's model as a tool for looking at these contextual influences.     

Student and Lecturer Responses to the Introduction of Computer Assisted Learning (CAL) in a University Business School

This paper comprehensively reviews the CAL literature before reporting on a study of student and lecturer take-up of the Learning Resource Web (LRW), within the Bristol Business School. The study was multimethod, incorporating a survey of student expectations (n=394) and qualitative interviews with teaching staff (n=12). The LRW initially supported teaching in the sciences. Its implementation in the Business School raised questions about the support it might offer for active and experiential pedagogies. Lecturers tended to use the LRW as an aid to course management, but also saw it as a catalyst for pedagogic change and, in particular, the development of independent learning skills amongst undergraduates. By contrast, students welcomed the system because it appeared to provide a learning safety-net. The study highlights tentative signs that, because of this, the introduction of the LRW may be promoting the instrumentality and dependence on exposition that lecturers often seek to counteract.     

Affordances of using Multiple Videoed Events to construct a rich understanding of adult–child book readings

This paper explores the affordances of using video-based research to capture a multiplicity of events, along with multimodal representations when producing data related to adult–child book readings. In doing this we answer two questions: (1) why more than one event is needed when seeking a comprehensive collection of information for the purpose of analysis; and (2) why one mode of data production alone (e.g. audio recordings or note taking) is insufficient to record practice or interviews when richness is of priority. This research used three videoed events to produce data. These included videoing: (1) caregiver–child interactions during four shared book reading sessions, (2) interviews with caregivers immediately following each of the reading sessions and (3) video-stimulated discussions with caregivers within two months of the final shared book reading. In this paper, I contribute to discussions that highlight the affordances of using video-based research as a means of capturing the multimodal elements of an experience, which can contribute to the analysis and interpretation of data. I expand on this, however, to suggest that when coupled with a multiplicity of events, video-based research can be a means of pursuing richness via a method that has been criticized for its narrow subjectivity.     

A biomechanical comparison of conventional classifications of bowling action-types in junior fast bowlers

ABSTRACT

Fast bowling is categorised into four action types: side-on, front-on, semi-open and mixed; however, little biomechanical comparison exists between action types in junior fast bowlers. This study investigated whether there are significant differences between action-type mechanics in junior fast bowlers. Three-dimensional kinematic and kinetic analyses were completed on 60 junior male fast bowlers bowling a five-over spell. Mixed-design factorial analyses of variance were used to test for differences between action-type groups across the phases of the bowling action. One kinetic difference was observed between groups, with a higher vertical ground reaction force loading rate during the front-foot contact phase in mixed and front-on compared to semi-open bowlers; no other significant group differences in joint loading occurred. Significant kinematic differences were observed between the front-on, semi-open and mixed action types during the front-foot contact phase for the elbow and trunk. Significant kinematic differences were also present for the ankle, T12-L1, elbow, trunk and pelvis during the back-foot phase. Overall, most differences in action types for junior fast bowlers occurred during the back-foot contact phase, particularly trunk rotation and T12-L1 joint angles/ranges of motion, where after similar movement patterns were utilized across groups during the front-foot contact phase.     

The One and the Many: Enduring Legacies of Spearman and Thurstone on Intelligence Test Score Interpretation

ABSTRACT

Charles Spearman and L. L. Thurstone were pioneers in the field of intelligence. They not only developed methods to assess and understand intelligence, but also developed theories about its structure and function. Methodologically, their approaches were not that distinct, but their theories of intelligence were philosophically very different – and this difference is still seen in modern approaches to intellectual assessment. In this article, we describe their theories of intelligence and then trace how these theories have influenced the development and use of intelligence instruments, paying particular attention to score interpretation.