Multi-age-grouping paradigm for young swimmers

Abstract

The purpose of this study was to examine the adequacy of “multi-age” classification systems in youth sports with a specific focus on the unisex multi-age-groupings used by USA Swimming. In addition, we offer an analytical rationale for the multi-age-groupings and potential alternatives. We examined the top 100 US swim performances for three years (2005, 2006, and 2007) for girls and boys in 15 age-groups (7 to 20 years and a singular group of 21 years and older). Data for each age and sex were pooled over the three years and means were calculated for each of seven competitive swim events. Swim times differed among each age up to the 14-year age-group in girls (F _14,30885 = 183.9, P < 0.01, Cohen's d = 1.19–3.72, large effect) and 16-year age-group in boys (F _14,30885 = 308.7, P < 0.01, Cohen's d = 0.81–3.64, large effect) for all events. Age-related differences in swim times continued later in boys than girls likely due to differences between the sexes in timing of growth and maturation. Because of the differences in swim performance in contemporary multi-age-groups, stratifying swimmers by a single age is the best means to ensure competitive fairness and equality, although there is no rationale for swimmers under the age of 8 years to compete in separate unisex competitive groups.     

Testing a student generated hypothesis using student data

We describe an activity that allows students to experience the full process of a statistical investigation, from generating the research question, to collecting data and testing a hypothesis. Implementation of the activity is described both with and without use of clickers, handheld remotes that allow instant data collection.     

Excluding students from classroom: Teacher techniques that promote student responsibility

Students who continuously misbehave are frequently excluded from class, allowing them time to reflect on their inappropriate behavior. This paper examines students’ perceptions of the teacher’s behavior toward them prior to, during, and after the exclusion, focusing on teachers’ explanations, punishments, and follow-up conversations. The results indicate that students who do not accept responsibility for being excluded think that their teachers’ are to blame. To convince students to accept responsibility for their acts, teachers must explain why the exclusion is necessary, warn and punish before excluding a student, and hold a follow-up conversation, highlighting the impact of the misbehavior on classmates.     

Examination of Middle-School Students' Independent Use of a Complex Mnemonic System

The purpose of the present 2-experiment study was to determine whether a recently developed mnemonic numeric strategy could be used more independently by middle school students. In the context of associating various 18th-, 19th-, and 20th-century inventions with their dates, the authors found that students could successfully implement the strategy in a group-instructional context (as opposed to the one-on-one individual administrations of earlier investigations). The students were not, however, able to take the basic components of the strategy and effectively apply them without complete mnemonic pictorial support. That is, students did not create their own memory-enhancing visual images in the absence of instructor-provided interactive line drawings. The results are consistent with those of previous research documenting that less sophisticated learners (including middle school students) are unable to apply complex mnemonic strategies independently unless they are provided with sufficient auxiliary support to reduce information-processing demands.     

Special education students in the labour market: four case studies

ABSTRACT

This paper examines the employment status of 10 young men 10 years after leaving classes for the socially maladjusted. On the basis of their work careers, they were placed in one of 4 labour market sectors using the criteria (1) employed/unemployed at the time of the interview, and (2) history of long‐term/short‐term employment. Half of the young men were unemployed, 4 were working and 1 in prison. The large percentage of unemployed respondents was due to the exceptionally difficult economic situation prevailing in Finland at the time the interviews were carried out, as a result of which the national unemployment rate approached almost 20 per cent. Despite a lack of vocational education, all the young men but one had a positive attitude towards work, and those unemployed were actively seeking a job. There was almost no relation between the young men's school career and their work career, since those who had the longest‐lasting jobs were those young men who had had the most difficulties in school. When measured in terms of length of employment, the attachment of these young men to working life differed greatly: one had been for the entire postschool period (almost 10 years) in the service of the same employer, while another had had several jobs of a few months’ duration interspersed with periods of unemployment.     

The Effect of Mother–Child Reading Time on Children's Reading Skills: Evidence From Natural Within-Family Variation

Children's exposure to book reading is thought to be an influential input into positive cognitive development. Yet there is little empirical research identifying whether it is reading time per se, or other factors associated with families who read, such as parental education or children's reading skill, that improves children's achievement. Using data on 4,239 children ages 0–13 of the female respondents of the 1979 National Longitudinal Survey of Youth, this study applies two different methodologies to identify the causal impact of mother–child reading time on children's achievement scores by controlling for several confounding child and family characteristics. The results show that a 1 SD increase in mother–child reading time increases children's reading achievement by 0.80 SDs.     

Perceptions and Evaluations of Child Transgressions and Disciplinary Techniques in High- and Low-Risk Mothers and Their Children

Perceptions and evaluations of children's transgressions (moral, conventional, personal), parental disciplinary actions (power assertion, love withdrawal, induction), and expected outcomes (compliance) were assessed in matched high- and low-risk (for physical abuse) mothers and their children. High-risk mothers and their children evaluated conventional and personal transgressions as more wrong than low-risk mothers and their children. Although both high- and low-risk mothers and their children varied disciplinary responses according to the type of transgression, high-risk mothers used power assertion (verbal and physical force) more often and induction (reasoning and explanation) less often. High-risk mothers also perceived the use of power assertion by others as more appropriate. With respect to outcomes, high-risk mothers, compared to low-risk mothers, expected less compliance following moral transgressions and more compliance after personal transgressions. Children of both high-and low-risk mothers made compliance predictions following moral and personal transgressions that were similar to the low-risk mothers' predictions.     

American children's fiction of the eighties: Continuity and innovation

Joel D. Chaston teaches children's and young adult literature at Southwest Missouri State University. He has co-authoredGrowing Into Whole Language: An Odyssey in Theme Exploration (forthcoming from Scholastic of Canada/Heinemann) and has recently published articles on contemporary children's writers such as Katherine Paterson and Lois Lowry.