Math fluency is etiologically distinct from untimed math performance, decoding fluency, and untimed reading performance: evidence from a twin study

The authors examined whether math fluency was independent from untimed math and from reading using 314 pairs of school-aged twins drawn from the Western Reserve Reading and Math Projects. Twins were assessed through a 90-min home visit at approximately age 10 and were reassessed in their homes approximately 1 year later. Results suggested that the shared environment and genetics influenced the covariance among math fluency, untimed math measures, and reading measures. However, roughly two thirds of the variance in math fluency was independent from untimed math measures and reading, including reading fluency. The majority of this independent variance was the result of genetic factors that were longitudinally stable across two measurement occasions. These results suggest that math fluency, although related to other math measures, may also be a genetically distinct dimension of mathematics performance.     

Parent–youth discordance about youth-witnessed violence: Associations with trauma symptoms and service use in an at-risk sample

ObjectiveStudies have consistently demonstrated a lack of agreement between youth and parent reports regarding youth-witnessed violence. However, little is known about whether disagreement is associated with poorer outcomes and less utilization of mental health services. The purpose of the current study was to examine disagreement among youth and parents about youth witnessed violence, and determine whether concordance predicted trauma symptoms and recognition of need and receipt of counseling services.MethodsConcordance about youth-witnessed violence was examined in 766 dyads from the Longitudinal Studies of Child Abuse and Neglect (LONGSCAN). Youth participants self-reported trauma symptoms, caregivers indicated youth need for and receipt of services. Both youth and parents provided information about youth-witnessed violence exposure in the last year.ResultsResults showed youth and caregivers differed significantly about youth-witnessed violence. Specifically, 42% of youth reported youth-witnessed violence, compared to only 15% of parents. For those parents who reported youth-witnessed violence, only 29% reported an identified need for services and only 17% reported the youth had received any mental health services. Concordance between parent–youth dyads was associated with greater identified need for services but was not associated with the use of counseling services or trauma symptoms.ConclusionsYouth who reported witnessing violence reported more frequent trauma symptoms regardless of concordance. Parents from dyads in which both informants reported youth-witnessed violence were more likely to endorse need for, but not receipt of counseling services. Given this association between youth-witnessed violence and mental health problems, more work is needed to identify barriers to concordance as well as service utilization.     

Students’ images of two-variable functions and their graphs

This paper presents a conceptual analysis for students’ images of graphs and their extension to graphs of two-variable functions. We use the conceptual analysis, based on quantitative and covariational reasoning, to construct a hypothetical learning trajectory (HLT) for how students might generalize their understanding of graphs of one-variable functions to graphs of two-variable functions. To evaluate the viability of this learning trajectory, we use data from two teaching experiments based on tasks intended to support development of the schemes in the HLT. We focus on the schemes that two students developed in these teaching experiments and discuss their relationship to the original HLT. We close by considering the role of covariational reasoning in generalization, consider other ways in which students might come to conceptualize graphs of two-variable functions, and discuss implications for instruction.     

Teaching Literature for General Education

This study explored the relationship between identity development, as gauged by Marcia's identity development construct, and student perception of instructor political bias. Regression analysis was employed to compare participant responses on the Ego Identity Process Questionnaire, a measure of Marcia's construct, with the Political Bias in the Classroom Survey, a measure gauging perceptions of and reactions to instructor political bias. The EIPQ's commitment scale was found to be a significant positive indicator for the PBCS's perception scale, suggesting that students who are strongly committed to their identity are more likely to perceive an instructor as having a political bias. Recommendations are made for how to address perceptions of political bias.     

Books and Publishing

Donald R. McCoy The National Archives: America's Ministry of Documents, 1934-1968 (Chapel Hill, Yniversity of North Carolina Press, 1978—$19.00)

Madeleine B. Stern Books and Book People in 19th Century America (New York: R.R. Bowker, 1978—$25.00)

Susan Otis Thompson American Book Design and William Morris (New York: Bowker, 1977—$29.95)     

Web-Scale Discovery in an Academic Health Sciences Library: Development and Implementation of the EBSCO Discovery Service

Funds made available at the close of the 2010–11 fiscal year allowed purchase of the EBSCO Discovery Service (EDS) for a year-long trial. The appeal of this web-scale discovery product that offers a Google-like interface to library resources was counter-balanced by concerns about quality of search results in an academic health science setting and the challenge of configuring an interface that serves the needs of a diverse group of library users. After initial configuration, usability testing with library users revealed the need for further work before general release. Of greatest concern were continuing issues with the relevance of items retrieved, appropriateness of system-supplied facet terms, and user difficulties with navigating the interface. EBSCO has worked with the library to better understand and identify problems and solutions. External roll-out to users occurred in June 2012.     

On Being a Virtual World Librarian: Experiences in Offering Live Reference Services in a Virtual World

The reference collection holds an important place within the library. The proper maintenance of this collection through weeding is a critical yet often overlooked aspect of collection management. This article offers a case study describing a reference collection weeding project, including the development of a reference collection policy, a review of standing orders, the goals and outcomes of the review, and a discussion of the benefits of the project.     

Testing Expert-Based Versus Student-Based Cognitive Models for a Grade 3 Diagnostic Mathematics Assessment

The purpose of this study was to evaluate the adequacy of three cognitive models, one developed by content experts and two generated from student verbal reports for explaining examinee performance on a grade 3 diagnostic mathematics test. For this study, the items were developed to directly measure the attributes in the cognitive model. The performance of each cognitive model was evaluated by examining its fit to different data samples: verbal report, total, high-, moderate-, and low ability using the Hierarchy Consistency Index (Cui & Leighton, 2009), a model-data fit index. This study utilized cognitive diagnostic assessments developed under the framework of construct-centered test design and analyzed using the Attribute Hierarchy Method (Gierl, Wang, & Zhou, 2008; Leighton, Gierl, & Hunka, 2004). Both the expert-based and the student-based cognitive models provided excellent fit to the verbal report and high ability samples, but moderate to poor fit to the total, moderate and low ability samples. Implications for cognitive model development for cognitive diagnostic assessment are discussed.     

Systems Analysis,Interviewing, and the Improv

Interviewing is a critical skill for systems analysts. This article describes an experiment using student actors as interviewees for in‐class exercises to teach interviewing in the junior‐level systems analysis course. The experiment proved beneficial to the class, to the actors, and to the senior IS majors who helped the actors prepare.     

Supporting Educators to Implement Mand Training for a Student with Multiple Disabilities

ABSTRACT

The purposes of the study were to assess the effects of an online learning module on the implementation of mand training by a classroom team and determine whether training improved manding for a student with multiple disabilities. The classroom team utilized the Support Needs Assessment and Planning (SNAP) process to identify supports and guide implementation of the mand training procedures. The results indicate that both the special education teacher and paraprofessional were able to implement the mand training strategy with fidelity after completing the online module and student manding increased. The classroom team reported that both the online learning module and SNAP process were valuable for planning and implementing research-based supports. Limitations, implications for practice, and future research considerations are addressed.