Assessing the limitations of the Banister model in monitoring training

The aim of this study was to carry out a statistical analysis of the Banister model to verify how useful it is in monitoring the training programmes of elite swimmers. The accuracy, the ill-conditioning and the stability of this model were thus investigated. The training loads of nine elite swimmers, measured over one season, were related to performances with the Banister model. First, to assess accuracy, the 95% bootstrap confidence interval (95% CI) of parameter estimates and modelled performances were calculated. Second, to study ill-conditioning, the correlation matrix of parameter estimates was computed. Finally, to analyse stability, iterative computation was performed with the same data but minus one performance, chosen at random. Performances were related to training loads for all participants (R(2) = 0.79 +/- 0.13, P < 0.05) and the estimation procedure seemed to be stable. Nevertheless, the range of 95% CI values of the most useful parameters for monitoring training was wide: t(a) = 38 (17, 59), t(f) = 19 (6, 32), t(n) = 19 (7, 35), t(g) = 43 (25, 61). Furthermore, some parameters were highly correlated, making their interpretation worthless. We suggest possible ways to deal with these problems and review alternative methods to model the training-performance relationships.     

Academic self-concept in elementary learning disabled children: Study with the student's perception of ability scale

Academic self-concept as measured by the Student's Perception of Ability Scale (SPAS) was compared for 81 learning disabled (LD) and 81 normally-achieving control children in grades three to six. The results show that LD children hold significantly more negative self-perceptions of ability in reading, spelling, and arithmetic than do the control children. Further, these negative school subject-related attitudes in the LD children had generalized to lower self-perceptions of ability in general, to expressions of less confidence in school, and more negative attitudes toward school. No grade level or sex effects were observed. It was concluded that the SPAS is able to discriminate between normally-achieving children and those experiencing problems in school, and, accordingly, that the SPAS has good external validity. The results were discussed in terms of using the SPAS for evaluating affective components of remediation, and for identifying high-risk elementary school children. Continuing external validity studies being undertaken by the authors also were noted.     

Distance and Online Social Work Education: Novel Ethical Challenges

Digital technology has transformed social work education. Today's students can take individual courses and earn an entire degree without ever meeting their faculty members in person. Technological innovations such as videoconferencing, live online chat, asynchronous podcasts, and webinars enable social work educators to reach students whose personal circumstances and geographical locations make it difficult for them to attend school in person. This paper highlights complex ethical issues associated with the proliferation of digital and online social work education. Key ethical issues concern student access; course and degree program quality and integrity; academic honesty and gatekeeping; and privacy and surveillance.     

Test Norms and Sampling Theory

The authors investigated predictive relationships among student characteristics that influence motivation for learning and achievement. Participants were students (N = 900) from all 4 grade levels in 18 rural public high schools in the south-western United States. The authors used AMOS 4.0 (J. L. Arbuckle &; W. Wothke, 1996) to test a hypothesized path model in development and validation subsamples. Variables included perceptions of classroom climate, perceived ability, perceived instrumentality of instruction, and achievement goals as predictors of engagement and effort in school. The model fit the data reasonably well, with relatively minor variations in the strength of the paths between subsamples. The authors discuss implications for research and classroom practice.