Child abuse potential among mothers of substance-exposed and nonexposed infants and toddlers     

Hogan TM  Myers BJ  Elswick RK 《Child abuse & neglect》2006,30(2):145-156

OBJECTIVE: The purpose of this longitudinal study was to determine whether there were differences in child abuse potential among mothers who were nonusers, drug users who accepted treatment, and drug users who rejected offers of treatment, over the first 2 years of their children's lives. METHOD: Participants were mothers of 140 infants, classified into Nonuser (n = 48), Treatment (n = 72), or Refuser (n = 20) groups. The Child Abuse Potential (CAP) Inventory [Milner, J. S. 1980. The Child Abuse Potential Inventory: Manual. Webster, NC: Psytec Corporation] was administered when infants were 4, 9, 12, 18, and 24 months. RESULTS: Results of mixed-model analyses of variances showed no group differences on CAP Inventory abuse scale scores. There were significant group differences in lie scale scores on the CAP Inventory, such that lie scale scores for the Nonuser group were significantly higher than lie scale scores for the Treatment group. CONCLUSIONS: Overall, results support the position that low-income women with many risk factors in their lives are at high risk for potential child abuse, but that their drug use status and drug treatment status does not differentiate them from their nonuser peers from a similar social and demographic background.  相似文献   

Stimulus space complexity determines the ratio of specialist and generalist neurons during pattern recognition     

Aaron Montero  Ramon Huerta  Francisco B. Rodriguez 《Journal of The Franklin Institute》2018,355(5):2951-2977

Neural processing layers built on divergent connectivity patterns display two types of stimulus-dependent responses: neurons that react to a few stimuli, specialists, and other ones that respond to a wide range of inputs, generalists. Specialists are essential for the discrimination of stimuli and generalists extract common and generic properties from them. This neural heterogeneity could have emerged because of animal adaptation to the environment. Thus, we suggest that there is a relationship between the percentage of specialists and generalists and the stimulus complexity. In order to study this possible relationship, we use patterns with different complexities in a bio-inspired neural network and calculate their classification errors for different ratios of these types of neurons. This study shows that, when the complexity of the stimuli is low, the minimum classification error is achieved with almost any specialist-generalist ratio. Thus, in this case, the role of these neurons during pattern recognition is unspecific. When this complexity is intermediate, both are needed to minimize the classification error, usually in a similar proportion. For increasing stimulus complexity, the importance of generalists decreases, until their relevance is fully nullified when the complexity is high. Therefore, if we adjust the specialist-generalist ratio to the complexity of patterns, we can build more effective neural networks for pattern recognition. Finally, we propose an estimation of stimulus complexity based on the proportion of these types of neurons observed by neural recordings. This offers the possibility to evaluate the stimulus complexity to which animals are adapted.  相似文献   

The physical profile of adult male basketball players: Differences between competitive levels and playing positions     

Davide Ferioli  Ermanno Rampinini  Andrea Bosio  Antonio La Torre  Matteo Azzolini  Aaron J. Coutts 《Journal of sports sciences》2018,36(22):2567-2574

This study examined the physical differences in adult male basketball players of different competitive level and playing position using a large cohort. In the middle of the regular season, 129 players from four different Divisions completed a Yo-YoIR1 and, after 3-to-8 days, they performed a 6-min continuous running test (Mognoni’s test), a counter-movement jump (CMJ) test and a 5-min High-intensity Intermittent running test (HIT). Magnitude-based inferences revealed that differences in HIT were very likely moderate between Division I and II and likely small between Division II and III. The differences in absolute peak power and force produced during CMJs between Division I and II and between Division II and III were possibly small. Differences in Yo-YoIR1 and Mognoni’s test were very likely-to-almost certain moderate/large between Division III and VI. We observed possibly-to-likely small differences in HIT and Mognoni’s test between guards and forwards and almost certainly moderate differences in absolute peak power and force during CMJs between guards and centres. The ability to sustain high-intensity intermittent efforts (i.e. HIT) and strength/power characteristics can differentiate between competitive level, while strength/power characteristics discriminate guards from forwards/centres. These findings inform practitioners on the development of identification programs and training activities in basketball.  相似文献   

Measurement in physical education and exercise science: A brief report on 2017     

Nicholas D. Myers  Seungmin Lee  Kimberly T. Kostelis 《Measurement in physical education and exercise science》2018,22(1):1-10

  相似文献   

The impact of COVID-19 on A Level exams in England: Students as consumers     

Kalwant Bhopal  Martin Myers 《British Educational Research Journal》2023,49(1):142-157

The recent global outbreak of the COVID-19 pandemic created significant challenges for society, not least for education. England went into lockdown in March 2020; following this, A Level exams were cancelled and the Department for Education announced that results were to be determined by teacher-assessed grades. This paper draws upon research conducted during this time with A Level students. It is based on a total of 53 Skype interviews with students who had their A Level exams cancelled, most of whom had ambitions to start university in September 2020. A number of striking findings emerged from the study. Students were well-informed about the changes to the A Level exam assessment and the impact structural inequalities were likely to have on assessed grades. White students and those from independent fee-paying schools were consistently more satisfied with the measures put in place to assess their grades compared to students from Black and minority ethnic backgrounds. However, all students—regardless of their background—identified patterns of unfairness which were based on structural inequalities. We conclude that these findings point to students adopting some of the attributes of the ‘student as consumer’, not by concentrating on choices associated with free market economies such as ‘good value’, but rather by identifying more ethical ‘values’ within education.  相似文献