A Second-Order Conditionally Linear Mixed Effects Model With Observed and Latent Variable Covariates

A conditionally linear mixed effects model is an appropriate framework for investigating nonlinear change in a continuous latent variable that is repeatedly measured over time. The efficacy of the model is that it allows parameters that enter the specified nonlinear time-response function to be stochastic, whereas those parameters that enter in a nonlinear manner are common to all subjects. In this article we describe how a variant of the Michaelis–Menten (M–M) function can be fit within this modeling framework using Mplus 6.0. We demonstrate how observed and latent covariates can be incorporated to help explain individual differences in growth characteristics. Features of the model including an explication of key analytic decision points are illustrated using longitudinal reading data. To aid in making this class of models accessible, annotated Mplus code is provided.     

Designing Interdisciplinary Assessments in Sciences for College Students: An example on osmosis

College science education needs to foster students' habit of mind beyond disciplinary constraints. However, little research has been devoted to assessing students' interdisciplinary understanding. To address this problem, we formed a team of experts from different disciplines to develop interdisciplinary assessments that target introductory college-level science. We started our project by focusing on osmosis, a topic that involves knowledge from multiple science disciplines. We developed an instrument focusing on this topic and administered it to 3 classes of college students. A Rasch partial credit analysis showed that the items demonstrated satisfactory psychometric properties. The findings also revealed the differences between student's disciplinary and interdisciplinary understanding. The educational implications of the study were discussed.     

Modeling Item Response Times With a Two-State Mixture Model: A New Method of Measuring Speededness

Speededness refers to the extent to which time limits affect examinees'test performance, and it is often measured by calculating the proportion of examinees who do not reach a certain percentage of test items. However, when tests are number-right scored (i.e., no points are subtracted for incorrect responses), examinees are likely to rapidly guess on items rather than leave them blank. Therefore, this traditional measure of speededness probably underestimates the true amount of speededness on such tests. A more accurate assessment of speededness should also reflect the tendency of examinees to rapidly guess on items as time expires. This rapid-guessing component of speededness can be estimated by modeling response times with a two-state mixture model, as demonstrated with data from a computer- administered reasoning test. Taking into account the combined effect of unreached items and rapid guessing provides a more complete measure of speededness than has previously been available.     

Professional Journals as a Source of PCK for Teaching Nature of Science: An Examination of Articles Published in The Science Teacher (TST) (an NSTA Journal), 1995–2010

A number of science education policy documents recommend that students develop an understanding of the enterprise of science and the nature of science (NOS). Despite this emphasis, there is still a gap between policy and practice. Teacher professional literature provides one potential venue for bridging this gap, by providing “activities that work” (Appleton in elementary science teacher education: International perspectives on contemporary issues and practice. Lawrence Erlbaum Associates, Mahwah, NJ, 2006) that can scaffold teachers’ developing pedagogical content knowledge (PCK) for teaching NOS. We analyzed articles published in the NSTA journal The Science Teacher (1995–2010) in terms of the degree to which they provide appropriate model activities and specific information that can support the development of teachers’ PCK for teaching NOS. Our analysis revealed a diversity of NOS aspects addressed by the authors and a wide range of variation in the percent of articles focused on each aspect. Additionally, we found that few articles provided robust information related to all the component knowledge bases of PCK for NOS. In particular, within the extant practitioner literature, there are few models for teaching the aspects of NOS, such as the function and nature of scientific theory. Furthermore, though articles provided information relevant to informing teachers’ knowledge of instructional strategies for NOS, relevant information to inform teachers’ knowledge of assessment in this regard was lacking. We provide recommendations for ways in which the practitioner literature may support teachers’ teaching of NOS through more robust attention to the types of knowledge research indicates are needed in order to teaching NOS effectively.     

THE FELLOWSHIPS OF THE NATIONAL COUNCIL OF RELIGION IN HIGHER EDUCATION

This article explores the interaction between the work and lives of five religious qualitative researchers whose research studies investigate both culture and religion. The ways their personal backgrounds, experiences, and values affect their choice of research topics and their relationships with research participants and with data, are revealed through the stories they tell about their work. Implications are drawn both for the conduct of qualitative, cultural study and for religious education.     

Gender differences in behavioral regulation in four societies: The United States,Taiwan, South Korea,and China

The current study investigates gender differences in behavioral regulation in four societies: the United States, Taiwan, South Korea, and China. Directly assessed individual behavioral regulation (Head–Toes–Knees–Shoulders, HTKS), teacher-rated classroom behavioral regulation (Child Behavior Rating Scale, CBRS) and a battery of school readiness assessments (mathematics, vocabulary, and early literacy) were used with 814 young children (ages 3–6 years). Results showed that girls in the United States had significantly higher individual behavioral regulation than boys, but there were no significant gender differences in any Asian societies. In contrast, teachers in Taiwan, South Korea, as well as the United States rated girls as significantly higher than boys on classroom behavioral regulation. In addition, for both genders, individual and classroom behavioral regulation were related to many aspects of school readiness in all societies for girls and boys. Universal and culturally specific findings and their implications are discussed.     

A faculty–librarian collaboration for developing information literacy skills among preservice teachers

Preservice teachers enrolled in the first portion of an undergraduate education program at the Florida State University were assigned to develop case studies based on their experience working in local elementary schools. The case studies were to include research from the scholarly literature of the field using a rubric developed by the instructor for evaluating sources. After inadequate results were recorded from the initial semester's projects, the course instructor paired with a liaison librarian to provide a workshop to improve the use of scholarly resources in the following semester's class. This article reports on a citation analysis of student bibliographies from the two classes, finding that the number of scholarly resources cited increased significantly when the librarian's presentation accompanied the use of the instructor's rubric. The results affirm earlier research that a combination of library instruction and clear faculty-established guidelines and requirements for the use of scholarly resources results in increased quality of student research.     

The Doctoral Portfolio: Centerpiece of a Comprehensive System of Evaluation

The authors describe the process used to revise a traditional doctoral student evaluation system from one that consisted of written comprehensive and final oral examinations to one that features portfolio development. Student competence, expected student outcomes in each competency area, procedures for portfolio development, and documents and procedures for faculty review of the portfolios are described. Recommendations for implementing such a system and implications for counselor education programs are discussed.     

Teacher Perception of Play: In Leaving No Child Behind Are Teachers Leaving Childhood Behind?

The value of play seems inherent to the understandings of early childhood, but teachers of young children in the elementary grades have rarely been studied as to their attitudes toward play (Wing, 1995). The research explored teacher perceptions of the role of play in learning and the implications for practice. The study involved 4 first-grade teachers from 2 diverse socioeconomic school settings. The pheno-menological work followed a qualitative format of interview with an analysis of related documents. Although the instructors held a common value for play in the development of young learners, they did not make a corresponding provisions for such in their classrooms with the exception of 1 participant. Varying perceptions of the definition and place of play resulted in differing levels of willingness to include child-initiated play that were spawned within the educational contexts. These perceptions led to the inductively realized outcome variables of instructional goals, student products, and classroom climate. Dewey's (1916) view of work and play, Bredekamp and Rosegrant's (1995) Continuum of Teacher Behaviors, and Ajzen and Fishbein's (1980) theory of reasoned action provided frameworks for deductively understanding the teachers' instructional decisions.