The probabilistic character of relevance

Gebhardt's[1] probabilistic model of relevance is examined and found not to represent adequately some characteristics of the relevance judgement process. An alternative model is proposed, which identifies two different types of “error” or probabilistic variation between relevance judgements. The two types arise from, first, the definition of the boundaries of the relevance classes, and secondly the actual assessment of an individual document on the underlying scale (which is assumed to be a continuum). The problems of quantifying the model, and of assessing its implications for retrieval testing, are discussed.     

Neuropsychological intervention in dyslexia: two studies on British pupils

The theoretical context of this research is developmental neuropsychology--in particular, the educational implications for the classification of and intervention in specific developmental dyslexia (SDD). Controlled and validated research can help identify optimal teaching methods for groups and individuals. Within this framework, neuropsychological theory can be explored as a medium for improving intervention for pupils with SDD. Neuropsychological stimulation cannot change the macro aspects of the brain but can change its "finetuning" and its response to written text. Within the psycho-neurological approaches, Bakker (1979, 1990, 1998) developed both a diagnostic procedure and empirically investigated intervention procedures. The theory rests on the Balance Model of learning to read, in which differential hemisphere involvement is implicated in beginning and advanced reading. Intervention can take place via hemisphere-specific stimulation using visual or tactile stimulation or hemisphere-alluding stimulation using modified text. Two investigations are presented, one experimental and another clinical. The results support the validity of dyslexia subtyping and the effectiveness of the treatment methods.     

The effects of differing type and magnitude of reward on the contrafreeloading phenomenon in rats

This investigation was made to determine the effects of the magnitude of reward on contrafreeloading, using food or water as reward. Two quantities were selected for each level of reward quality—a 20-mg-pellet food reward, a 45-mg-pellet food reward, a .01-cc water reward, and a .1-cc water reward. Seven days of training were followed by three test sessions. There was a significantly higher percent of contrafreeloding demonstrated with food as reward than with water and higher number of barpresses with small reward than with large. It was argued that a more appropriate measure should include reference to performance during training. In this approach, contrafreeloading with food and water were virtually the same.     

Linked lives: stability and change in maternal circumstances and trajectories of antisocial behavior in children

Drawing on the notion of linked lives, this study examined the effects of stability and change in maternal circumstance on developmental trajectories of antisocial behavior in children 4 to 7 years of age. Using data from a national sample of young mothers and growth curve analysis, the study demonstrated that early maternal circumstances influences early antisocial behavior, whereas stability and change in these circumstances both exacerbate and ameliorate behavior problems. Of particular note, meaningful escape from poverty attenuates antisocial behavior whereas persistence in poverty or long-term movement into poverty intensifies such problems. These findings highlight the importance of structural context for parenting practices and the need to consider child development in light of dynamic and changing life-course fortunes of parents.     

An account of practice: employing drawings and stories to enable reflective learning

Facilitating reflection for personal growth in a business context requires careful thought and planning. As a learning process, Business-Driven Action Learning (BDAL) has two points of focus. It aims to firstly identify and make recommendations regarding a business challenge, whist secondly facilitating potentially significant individual personal learning and growth. The research reported in this account of practice focused on personal learning by exploring the potential for individuals to experience transformative learning during a BDAL process. During the research I used a number of methods including hand-drawn images and in-depth interviews to enable the writing of interpretive stories. Findings revealed that participants found reflection during and after the BDAL beneficial. They gained insights into what they learnt, what changed since the BDAL experience and also what they still need to focus on. The findings have practical implications for the action learning facilitator of BDAL during management development programmes. One of the ways action learning facilitators can initiate the reflection process of new participants is to share the experience of previous participants. ‘Sandy’s interpretive story’, contained in this article, is such an example and includes hand-drawn images of her learning journey. I argue that the use of interpretative stories helps new participants understand programme challenges and stimulates their individual learning journey.     

Informing in-season tactical periodisation in team sport: development of a match difficulty index for Super Rugby

In team sports, tactical periodisation refers to the planned manipulation of training loads with the aim of prioritising athlete readiness for matches of greatest importance. Although monitoring of athletes’ physical condition is often used to inform this planning, the direct influence of external factors on match difficulty has not been well quantified. In this study, a ‘match difficulty index’ (MDI) for use in Super Rugby was developed, based on the influence imparted by five external factors on previous match outcomes. Specifically, information relating to match location, days break between matches, time-zone change and opposition ladder position (both current and previous year) were collected for matches played during the 2011–2013 Super Rugby seasons. Logistic regression analyses were used to assess the importance of each of these factors with respect to match outcome (win/loss), with opposition ladder position and match location (home, domestic away or international) exerting the greatest influence on match difficulty. Three separate cross-validated models were constructed, with match outcome classification performance reported as 66.2%, 65.5% and 63.7% respectively. The three MDI models emanating from this study can each be used to inform tactical periodisation program design both prior to and during the regular season.     

Explaining match outcome in elite Australian Rules football using team performance indicators

The relationships between team performance indicators and match outcome have been examined in many team sports, however are limited in Australian Rules football. Using data from the 2013 and 2014 Australian Football League (AFL) regular seasons, this study assessed the ability of commonly reported discrete team performance indicators presented in their relative form (standardised against their opposition for a given match) to explain match outcome (Win/Loss). Logistic regression and decision tree (chi-squared automatic interaction detection (CHAID)) analyses both revealed relative differences between opposing teams for “kicks” and “goal conversion” as the most influential in explaining match outcome, with two models achieving 88.3% and 89.8% classification accuracies, respectively. Models incorporating a smaller performance indicator set displayed a slightly reduced ability to explain match outcome (81.0% and 81.5% for logistic regression and CHAID, respectively). However, both were fit to 2014 data with reduced error in comparison to the full models. Despite performance similarities across the two analysis approaches, the CHAID model revealed multiple winning performance indicator profiles, thereby increasing its comparative feasibility for use in the field. Coaches and analysts may find these results useful in informing strategy and game plan development in Australian Rules football, with the development of team-specific models recommended in future.     

Enriching the Scholarship of Teaching: Determining Appropriate Cross-Professional Applications Among Teaching, Counseling, and Psychotherapy

When teaching is construed as facilitating learning rather than imparting knowledge, it becomes an educational helping relationship. In this light, teaching can be understood to share important characteristics with other helping professions, such as counseling and psychotherapy. As teaching is further conceptualized within this paradigm, confusion can develop regarding appropriate applications of concepts from related helping professions to teaching contexts. This article introduces and illustrates an appropriateness criterion that attempts to remove this confusion and thereby facilitate important cross-professional collaborations and further conceptual development of the teaching-as-helping paradigm.     

“To Virgo or not to Virgo”: Examining the Closure and Reopening of a Neighborhood School in a Predominantly African American Community

Neighborhood schools engender the idea that schools can be integral community centers, with learning facilitated by the personal relationships developed among teachers, administrators, students, and parents. Neighborhood schools also have represented stigmatized segregated spaces located in communities with high poverty rates, low high school graduation rates, and little opportunity for social mobility. Drawing from print and online media sources related to the closure and reopening of D.C. Virgo Middle School (Virgo), a racially- and economically-segregated middle school in an urban, southern community, this study uses conceptual content analysis to examine the competing discourses surrounding Virgo. The authors conclude that the public discourse examined herein represents the tension between public schools as stigmatizing beloved spaces. As a stigmatizing space, the school can transfer the stigmatized identity to associated students and personnel. As a beloved space, the school can nurture possibility and hope.