Perceived parental social support and psychological control predict depressive symptoms for lesbian,gay, bisexual,transgender, queer,or questioning youth in the United States

Salient practices in the parenting literature—support and control—have seldom been applied to understanding lesbian, gay, bisexual, transgender, queer, or questioning (LGBTQ) youth mental health. We examine associations among perceived parental social support, psychological control, and depressive symptoms for LGBTQ youth in the United States (n = 536; M_age = 18.98; 48.1% women; 25.2% Black or African American; 37.1% Hispanic or Latino/a/x). Data were collected in 2011–2012. Results indicated joint effects of social support and psychological control predicting youth depressive symptoms. Multiple group analysis yielded a significant interaction of parenting practices for youth whose parent(s) did not know their LGBTQ identity. Findings support further consideration of parental support and control in relation to LGBTQ youth well-being.     

A comparative study of baseball bat performance

The results of a comparative study of five aluminum and one wood baseball bats are presented. The study includes an analysis of field data, high-speed laboratory testing, and modal analysis. It is found that field performance is strongly correlated with the ball–bat coefficient of restitution (BBCOR) and only weakly correlated with other parameters of the bat, suggesting that the BBCOR is the primary feature of a bat that determines its field performance. It is further found that the instantaneous rotation axis of the bat at the moment of impact is very close to the knob of the bat and that the rotational velocity varies inversely with the moment of inertia of the bat about the knob. A swing speed formula is derived from the field data and the limits of its validity are discussed. The field and laboratory measurements of the collision efficiency are generally in good agreement, as expected on theoretical grounds. Finally, the BBCOR is strongly correlated with the frequency of the lowest hoop mode of the hollow bats, as predicted by models of the trampoline effect.     

The Course Experience Questionnaire: a Rasch Measurement Model Analysis

The Course Experience Questionnaire (CEQ) is applied to graduating students of Australian universities. Data from a selected university for graduates from 1994 to 1996 were analysed using a Rasch measurement model. The whole scale and each of the five sub‐scales were analysed for each year separately, to investigate its conceptual design and validity. The results show that, taken together, at least 17 of the 25 items con form a valid scale measuring graduate perceptions of their courses for each of the three data groups. Of the five sub‐scales, Good Teaching and Generic Skills are only moderately valid and reliable for use and interpretation separately from the main scale.     

Progression in primary school children's conceptions of burning: Toward an understanding of the concept of substance

Children's conceptions of burning were explored through observation and discussion or a number of challenging phenomena. Analysis of written responses showed that children's conceptions are both specific and contextually based, and that there is little coherence in the use of any one conception across phenomena. Progression across the primary school years can be described, however, in terms of children's growing confidence with the idea of transformation of substances and the analysis relates this to a model based on changing commitments to the notion of substance defined by properties, rather than history. The conceptual trajectories described in the study are broadly consistent with previous studies of secondary school children.     

Ethics and paediatric exercise science: issues and making a submission to a local ethics and research committee.

Research with children presents issues beyond those normally encountered in adult exercise science research. This paper explores the specific ethical issues that are encountered when conducting paediatric research in the exercise sciences. We identify the historical, moral and philosophical underpinnings of ethical conduct. The issue of consent and children's ability to provide informed consent is discussed, as is the nature of therapeutic and non-therapeutic research. Finally, we examine the information that is required by a local ethics and research committee and provide guidance material to help in the formulation of an application to such a committee.     

Don't Forget Us!Messages from the Mental Health Foundation Committee's Report on Services for Children with Learning Disabilities and Severe Challenging Behaviour

Philippa Russell (Director of the Council for Disabled Children) who chaired the Mental Health Foundation Committee on Services for Children with Learning Disabilities and Severe Challenging Behaviour, provides an overview of the evidence received and summarises its report's recommendations.