Lipid peroxidation of fish oils

Fish and fish oils are the richest sources of ω-3 fatty acids. However, they are susceptible to lipid peroxidation due to their high degree of unsaturation. In the present study, the level of thiobarbituric acid reactive material in various fish oils available in the market with and without added Vitamin E was determined. The peroxide levels in fish oil heated to food frying temperature of 180°C and the effect of addition of vitamin E has also been studied. The results indicate that the peroxide levels in almost all the products available in the market were abnormally high irrespective of their Vitamin E content. This might be due to the inefficient methods used for processing and storage of fish oils. Addition of vitamin E was found to have a significant effect in lowering the rate of peroxidation of fish oil during thermal stress, showing that association of antioxidants with ω-3 fatty acids lowers the rate of lipid peroxidation.     

Engagement with online self-tests as a predictor of student success

Online self-testing as part of the online learning environment (OLE) provides practice questions on key concepts with immediate feedback – in a ‘no-risk’ environment. OLE activity was analysed for 471 on-site and distance students enrolled in health science courses to determine total activity on the OLE and usage of online self-tests. The study also aimed to determine whether utilisation of self-tests differed by final grade, particularly between students who just pass (C grades and Restricted pass) and those who fail (D and E grades). Results indicated that on-site students were significantly more active on the OLE compared to distance students. However, these groups engaged similarly with self-tests and achieved a similar distribution of grades. A significant positive relationship was found between final grade achieved and percentage of self-tests attempted. This relationship was significant regardless of study status (on-site or distance), course studied or total activity logged. A more targeted analysis of C?+?R vs. D?+?E students showed that although these two groups were similar on overall usage of the OLE, C?+?R students utilised self-tests to a significantly greater extent. Recommendations from this study are that students (particularly those struggling to achieve academic success) should be directed towards online self-tests.     

Attachment and Temperament in the Early Life Course: A Meta‐Analytic Review

This meta‐analytic review examines the association between early attachment (assessed at 1–5 years) and child temperament (assessed at birth–12 years), and compares the strength of this association with recently documented meta‐analytic associations between early attachment and social competence, externalizing behavior, and internalizing symptoms. Based on 109 independent samples (N = 11,440) of diverse socioeconomic and ethnic backgrounds, temperament was weakly associated with attachment (in)security (d = .14, CI [0.08, 0.19]) but modestly associated with resistant attachment (d = .30, CI [0.21, 0.40]). Temperament was not significantly associated with avoidant (d = .10, CI [?0.02, 0.19]) or disorganized (d = .11, CI [?0.03, 0.25]) attachment. Across developmental domains, early attachment security was more strongly associated with social competence and externalizing behaviors than internalizing symptoms and temperament.     

The Spockian Mother: Images of the “Good” Mother in Dr. Spock’s The Common Sense Book of Baby and Child Care, 1946–1992

Dr. Spock’s, The Common Sense Book of Baby and Child Care, one of the best-selling self-help texts of all-time, “second only to the Bible in popularity” (Meakin & Tattersall, 2004) was one of the most influential childcare books in American culture. The author has been both heralded and disparaged as instrumental in the shaping of untold generations. In the present study, we address the rhetorical construction of the Spockian Mother as she is developed during Spock’s tenure from 1946–1992. We employ a feminist rhetorical perspective to examine the progression of Spock’s texts in order to understand how patriarchal images of motherhood are constructed and maintained through Spock’s lifetime and the first 46 years of its publication. We argue that Spock both reinforced and challenged the institution of motherhood; he challenged institutionalized motherhood by encouraging mothers to “trust themselves” while simultaneously conforming to a patriarchal model of motherhood which is at odds with empowered mothering.     

A Seat at the Table: How the Work of Teaching Impacts Teachers as Policy Agents

Policy reflects and shapes society's beliefs about schools, teachers, children, learning, and society, as well as the power structures embedded in our communities and decision-making processes. Although teachers may be central to the implementation of education policy, they are marginal to the design of policy agendas and text, especially around issues of teaching and learning. Their absence in the policymaking process creates a disconnect between the goals and design of education policy and the actual lived challenges of implementation. In examining the dynamics in this critical disconnect, we address the following research questions: How do institutional norms and routines affect teachers' agency in the policymaking process? Following this research question is our action question: How do we support conditions that support teachers as policy agents? We draw on qualitative data from two sites (West Virginia and Wisconsin) where K–12 teachers partnered with university researchers in a range of capacity-building efforts. Analysis illustrates how teachers interact with certain institutional norms that make it hard to engage in policy design. Based on our findings, we discuss how a teacher–university partnership can better support the conditions that facilitate greater teacher agency in thinking, talking, and acting on policy.     

Child emotional aggression and abuse: definitions and prevalence

Objective

Research on and intervention for child emotional abuse and emotional aggression toward children have been severely hampered because there have been no agreed-upon, clinically usable definitions.

Methods

We have (a) proposed and field-tested a set of criteria to operationally define child emotional abuse for clinical settings and (b) used these criteria to design a parent-report measure of parental emotional aggression and child emotional abuse that could be used in research. In this paper, we review the development and field trials of these criteria for making substantiation decisions.

Results

Agreement between master reviewers and field decisions was extremely high in a 5-site development trial (96% agreement, κ = .89) and a 41-site dissemination trial (90% agreement, κ = .73). We compare these criteria to other research criteria in the literature. We then present data collected using a self-report measure designed to parallel these criteria from an anonymous online survey of US Air Force personnel and their spouses. The final sample (N = 52,780) was weighted to be representative of the United States civilian population. The prevalence of parents’ emotionally aggressive acts was much higher than the prevalence of emotional abuse (acts plus impact), but rates of parents’ acts of emotional aggression were lower than those typically reported in the literature. Additional analyses tested for differential effects due to gender of perpetrator (i.e., mothers or fathers), age of victim, and clustering within families. These factors did not drive rates of aggression or abuse.

Conclusions

In sum, the criteria developed and proposed appear to support reliable clinical decision making regarding child emotional abuse and can be translated to research survey tools that better capture the continuum of parents’ emotional aggression and child emotional abuse than the measures that are currently available, advancing the state of the science with respect to child emotional abuse.