A Probabilistic Model for Evaluation of Volleyball Scoring Systems

Abstract

A probabilistic model for the game of volleyball is developed to evaluate alternative scoring systems. This Markov chain model is then recursively solved, to determine the distribution of the number of serves per game and the probability that a given team wins. These results are then used to evaluate the effects on the game of volleyball of a proposed change in the scoring system.     

Preparing MSW Students for Social Work Licensure: A Curricular Case Example

Licensing has been a dynamic tension for the social work profession for many years, specifically in social work education. Increasingly, social work programs are using factors related to social work licensing (pass rates, number of test takers, etc.) as an indicator of programmatic success. Yet few, if any, published papers examine curricular innovations designed to prepare students for social work licensing exams. This article describes the initiative that one MSW program implemented to address licensing preparedness. After a brief overview of social work licensing, this article describes the contextual rationale, implementation, and evaluation of the Licensing Preparation Initiative (LPI). Since its inception in spring 2011, LPI data suggest that students are more knowledgeable about the process for applying to sit for the exam and the content areas of the exam, more prepared to take the social work licensing exam, and more confident in their ability to pass the social work licensing exam once they graduate. This article concludes with specific strategies and resources for designing a curricular initiative to address licensing preparedness.     

Variations on the use of cases in social work and teacher education

The recent proliferation of testing policies in the US has raised concerns about the consequences of ‘teaching to the test’. Current studies of teaching and testing document patterns of teacher resistance and accommodations to external tests, but often fail to examine how these patterns influence teachers' and students' engagement with curricular texts. This study develops an inter‐textual perspective to specify the discursive processes through which one external test entered into classroom tasks and talk about a novel in four urban high schools. The study illustrates how efforts to raise standards through testing policies can result in limiting students' opportunities to construct understandings of curricular texts and of the social ideas at their core.     

Classifying Korean adolescents’ career preparedness

Latent class analysis was used to examine the career preparation of 5,227 11th-grade Korean adolescents taken from the Korean Education Longitudinal Study of 2005 (KELS:2005). Three career preparedness groups were identified, to reflecting Skorikov’s (J Vocat Behav 70:8–24, 2007) conceptualization of career preparedness: prepared, confused, and unprepared. Most individual, family, and school factors selected for study were statistically significant predictors of group membership. Results provided insight about career decidedness and career planning from a Korean context.     

Genetic Moderation of Early Child‐Care Effects on Social Functioning Across Childhood: A Developmental Analysis

Data from 508 Caucasian children in the NICHD Study of Early Child Care and Youth Development shows that the DRD4 (but not 5‐HTTLPR) polymorphism moderates the effect of child‐care quality (but not quantity or type) on caregiver‐reported externalizing problems at 54 months and in kindergarten and teacher‐reported social skills at kindergarten and first grade—but not thereafter. Only children carrying the 7‐repeat allele proved susceptible to quality‐of‐care effects. The behavior–problem interactions proved more consistent with diathesis‐stress than differential‐susceptibility thinking, whereas the reverse was true of the social‐skills' results. Finally, the discerned Gene × Environment interactions did not account for previously reported parallel ones involving difficult temperament in infancy.     

Cultural Competence Training for Healthcare Professionals Working with LGBT Older Adults

The population of the aging lesbian, gay, bisexual and transgender (LGBT) community is significant and growing rapidly. As LGBT individuals age and begin to move into healthcare communities, they are fearful of apathy, discrimination, and abuse by healthcare providers and other residents. Person-centered cultural competence and sensitivity among service providers is necessary in order for LGBT individuals to share the same quality of life as other members of the aging community. Programming developed to educate healthcare professionals and aging-services providers on issues related to aging as an LGBT adult must be thoughtfully evaluated to show both efficacy and impact.     

Lower extremity joint coupling variability during gait in young adults with and without chronic ankle instability

Chronic ankle instability (CAI) is a condition resulting from a lateral ankle sprain. Shank-rearfoot joint-coupling variability differences have been found in CAI patients; however, joint-coupling variability (VCV) of the ankle and proximal joints has not been explored. Our purpose was to analyse VCV in adults with and without CAI during gait. Four joint-coupling pairs were analysed: knee sagittal-ankle sagittal, knee sagittal-ankle frontal, hip frontal-ankle sagittal and hip frontal-ankle frontal. Twenty-seven adults participated (CAI:n = 13, Control:n = 14). Lower extremity kinematics were collected during walking (4.83 km/h) and jogging (9.66 km/h). Vector-coding was used to assess the stride-to-stride variability of four coupling pairs. During walking, CAI patients exhibited higher VCV than healthy controls for knee sagittal-ankle frontal in latter parts of stance thru mid-swing. When jogging, CAI patients demonstrated lower VCV with specific differences occurring across various intervals of gait. The increased knee sagittal-ankle frontal VCV in CAI patients during walking may indicate an adaptation to deal with the previously identified decrease in variability in transverse plane shank and frontal plane rearfoot coupling during walking; while the decreased ankle-knee and ankle-hip VCV identified in CAI patients during jogging may represent a more rigid, less adaptable sensorimotor system ambulating at a faster speed.     

The effectiveness of supplemental phonics instruction employing constant time delay instruction for struggling readers

This study examined the provision of supplemental instruction using constant time delay for struggling readers who had fallen behind in developing word‐blending skills. Additionally, the study examined the utility of adding a material reward contingency to the instructional program with a contingency derived from percentile‐shaping procedures. Procedures were compared in a withdrawal design applied across blocks of letters with word blending as the target response. Participants exhibited substantial learning gains when provided constant time delay instruction in phonics skills as compared to baseline demonstrating clear experimental control. Results for the constant time delay plus reward contingency conditions were clearly differentiated from baseline but undifferentiated from the other instructional conditions. The implications of the findings for intervention for struggling readers and future research relevant to more comprehensive reading interventions are discussed.