The Use of Capacitive Touch Sensors for Temporal Measurements

Purpose

Physical activity participation in physical education is compromised when students nonsuit. We investigated: (a) reasons for nonsuiting/support of policy change and whether they differed by gender, ethnicity, or grade; and (b) the likelihood of nonsuiting based on the same demographics.

Method

Participants (N = 627) were 6th and 7th graders attending 1 urban middle school located in San Diego, CA. Students completed a questionnaire composed of 4 demographic items, level of agreement with 15 reasons for nonsuiting, and level of support of 6 proposed policy changes. Exploratory and confirmatory factor analyses were used to classify reasons for nonsuiting items and policy change items. Demographic differences among resultant factor scores and individual items were analyzed using t tests. Associations between factors/items and nonsuit frequency and demographics were analyzed using multinomial logistic regression.

Results

Girls, Latinos, and 7th graders were more likely habitual nonsuits ( ≥ 4 nonsuits) compared with their respective counterparts. Statistically significant factor scores (reasons for nonsuiting; emotional excuses, utilitarian excuses) were higher among habitual nonsuits but were not different based on gender, grade, and ethnicity. Seventh graders and girls had statistically significantly higher policy change factor scores compared with their respective counterparts.

Conclusion

Acting on student input toward reformulating suiting-out policy as well as addressing emotional excuse reasons, which are primarily under teacher control, may result in lower incidence of habitual nonsuiting.     

Ground Reaction Force Symmetry during Walking and Running

Abstract

The purpose of this study was to determine the effect of triathlon training using multiple, short cycle-run sequences (multicycle-run training) on cycle-run performance. Twelve competitive triathletes, randomized into two groups, underwent multicycle-run training or normal training for 6 weeks. During this period, baseline training remained the same for both groups, and only the high-intensity component differed. The differentiated exercises were performed at or above 100% maximal aerobic velocity. The improvements in overall cycle-run performance were similar (3.3 ± 1.4 % and 6.1 ± 1.7 % rise in performance in multicycle-run and normal training, respectively). However, the improvement in performance was significantly greater for the multicycle-run training (- 11.2 ± 6.8 s versus ?1.2 ± 7.7 s for multicycle-run training and normal training, respectively) during both the cycle-run change and the first 333-m lap, which together are termed the cycle-run transition. We concluded that 6 weeks of multicycle-run training did not induce greater improvement in cycle-run performance than did normal training in competitive triathletes. However, it did induce significant improvement in the cycle-run transition. This finding indicates that multicycle-run training may help competitive triathletes to develop greater skill and better physiological adaptations during this critical transition period of the triathlon race.     

Cognitive modelling and the behaviour genetics of reading

While it is well known that reading is highly heritable, less has been understood about the bases of these genetic influences. In this paper, we review the research that we have been conducting in recent years to examine genetic and environmental influences on the particular reading processes specified in the dual‐route cognitive model of reading. We argue that a detailed understanding of the role of genetic factors in reading acquisition requires the delineation and measurement of precise phenotypes, derived from well‐articulated models of the reading process. We report evidence for independent genetic influences on the lexical and nonlexical reading processes represented in the dual‐route model, based on studies of children with particular subtypes of dyslexia, and on univariate and multivariate genetic modelling of reading performance in the normally reading population.     

Genetic and environmental bases of reading and spelling: A unified genetic dual route model

We develop and test a dual-route model of genetic effects on reading aloud and spelling, based on irregular and non-word reading and spelling performance assessed in 1382 monozygotic and dizygotic twins. As in earlier research, most of the variance in reading was due to genetic effects. However, there were three more specific conclusions: the first was that most of the genetic effect is common to both regular and irregular reading. In addition to this common variance evidence was found for distinct genes influencing the acquisition of a lexicon of stored words, and additional genetic effects influencing the acquisition of grapheme–phoneme correspondence rules. The third conclusion, from a combined model of reading and spelling, is that reading and spelling have a common genetic basis. Models that did not distinguish lexical and non-lexical performance fit significantly worse than dual route genetic models. An implication of the research is that models of reading, whether connectionist or dual-route, must allow for the genetic independence of neurological processes underlying the decoding of non-words and irregular words.     

The impact of institutional factors on student academic results: implications for ‘quality’ in universities

This paper situates the topic of student assessment and the moderation of assessment within a broader context of policy debates about the quality of teaching and learning in universities. The focus and discussion grew out of a research project that aimed to investigate factors related to academic success and failure in a Faculty of Arts. The study, initially, identified a range of student demographic and biographical factors significantly related to academic success and failure. However, there was also evidence of pronounced differences in grading practices between different components (courses, programs, schools) within the institution. The paper explores the implications of such inconsistencies for the institutional mechanisms and processes that have typically been advocated as sufficient safeguards of quality. It concludes that the tendency of governments and other stakeholders to now champion performance indicators, along with the shifting focus towards quality ‘outcomes’, are likely to increasingly throw the strengths and weaknesses of institutional assessment practices into stark relief.     

Mother-child interaction at age two years and perceived difficult temperament

The current study investigated a hypothesized link between early child temperament and later problem behavior. Early temperament was assessed at ages 6, 13, and 24 months via mother ratings on age-appropriate versions of the Infant Characteristics Questionnaire. The 24-month form was developed in this study. Factor analyses of the questionnaire indicated a clear difficultness factor that was similar in content across all 3 ages. The 6-, 13-, and 24-month difficultness factors were correlated with home observation measures of mother-toddler interaction at age 24 months. Home observation indexes focused on situations where the mother tried to control the toddler's "trouble" behavior. Children rated by their mothers as difficult at 24 months were found to approach "mild trouble" more frequently than children perceived as easy or average. Furthermore, their mothers used intrusive control tactics more frequently than mothers of easy or average children. Analysis of behavior sequence variables showed that difficult children resisted their mothers' control attempts significantly more often than easy or average children, that is, had more conflict with the mothers. The 6- and 13-month difficultness scores predicted both the 2-year-old difficultness rating and the observed conflict indexes. It is suggested that the conflict observed in the interaction between the difficult 2-year-olds and their mothers is conceptually similar to the conflictual behavior characteristic of older, clinically referred, socially aggressive children and their mothers. Thus, the conflicted interactions found at age 2 years may represent an empirically based link between difficult infant temperament and the development of childhood problem behavior.     

Development of the California school climate and safety survey‐short form

Planning is essential to creating safe schools and it is required by the Federal No Child Left Behind legislation (U.S. Department of Education, 2004) and implemented via district local education action plans. The implementation of these plans involves continuous monitoring and reevaluation of information pertinent to each campus. As such, this process is facilitated by the availability of measures that are simple to administer, inexpensive, and whose psychometric properties have been evaluated. The California School Climate and Safety Survey (CSCSS), originally developed by M.J. Furlong, R. Morrison, and S. Boles (1991), was specifically developed for these purposes. The CSCSS is a student self‐report questionnaire created to measure general school climate and personal safety‐related experiences. In this article, we present the results of an evaluation of the CSCSS including exploratory and confirmatory factor analyses. These analyses reduced the original CSCSS research version from 102 items to 54 items. The psychometric properties of this CSCSS‐SF (Short Form) are presented. © 2005 Wiley Periodicals, Inc. Psychol Schs 42: 137–149, 2005.