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Selected AbstractsMeasured partitioning coefficients for parent and alkyl polycyclic aromatic hydrocarbons in 114 historically contaminated sediments: Part 1.ENVIRONMENTAL TOXICOLOGY & CHEMISTRY, Issue 11 2006KOC values Abstract Polycyclic aromatic hydrocarbon (PAH) partitioning coefficients between sediment organic carbon and water (KOC) values were determined using 114 historically contaminated and background sediments collected from eight different rural and urban waterways in the northeastern United States. More than 2,100 individual KC values were measured in quadruplicate for PAHs ranging from two to six rings, along with the first reported KOC values for alkyl PAHs included in the U.S. Environmental Protection Agency's (U.S. EPA) sediment narcosis model for the prediction of PAH toxicity to benthic organisms. Sediment PAH concentrations ranged from 0.2 to 8,600 ,g/g (U.S. EPA 16 parent PAHs), but no observable trends in KOC values with concentration were observed for any of the individual PAHs. Literature KOC values that are commonly used for environmental modeling are similar to the lowest measured values for a particular PAH, with actual measured values typically ranging up to two orders of magnitude higher for both background and contaminated sediments. For example, the median log KOC values we determined for naphthalene, pyrene, and benzo[a]pyrene were 4.3, 5.8, and 6.7, respectively, compared to typical literature KOC values for the same PAHs of 2.9, 4.8, and 5.8, respectively. Our results clearly demonstrate that the common practice of using PAH KOC values derived from spiked sediments and modeled values based on n -octanol,water coefficients can greatly overestimate the actual partitioning of PAHs into water from field sediments. [source] Adolescent personality, problem behaviour and the quality of the parent,adolescent relationship,EUROPEAN JOURNAL OF PERSONALITY, Issue 3 2006Willeke A. Manders Abstract The relationship between adolescent personality and problem behaviour has been well established. However, relatively little attention has been given to the role of the social environment in the association between adolescent personality and problem behaviour. We tested the mediating and moderating role of the quality of the parent,adolescent relationship in the associations between adolescents' personality traits and problem behaviour. The sample consisted of 140 adolescents (11 to 18 years of age) and both their parents. Results supported a mediating role of the father/mother,adolescent relationship in the associations between Agreeableness, Emotional Stability, and Conscientiousness and externalizing problem behaviour. The father/mother,adolescent relationships did not mediate the associations between personality traits and internalizing problem behaviour. We also found support for a moderating role of the father/mother,adolescent relationships in the association between Emotional Stability and both externalizing and internalizing problem behaviours. Other moderated effects were specific for parent, personality trait and type of problem behaviour. Copyright © 2006 John Wiley & Sons, Ltd. [source] Attachment and sensitivity in family context: the roles of parent and infant genderINFANT AND CHILD DEVELOPMENT, Issue 4 2006Sarah J. Schoppe-Sullivan Abstract This study examined the role of child gender in fathers' and mothers' sensitivity to and attachment relationships with their infants from a family systems perspective. Eighty-seven 1-year-olds participated in the Strange Situation with each parent. Parental sensitivity was examined during a competing demands task. Results indicated that fathers and mothers were equally sensitive to sons, but fathers were less sensitive than mothers to daughters, and mothers were more sensitive to daughters than to sons. Although mothers and fathers within the same families were similarly sensitive to daughters and sons, daughters' attachment security with fathers and mothers was similar whereas sons' was not. Further analyses revealed that fathers were more sensitive to sons with an insecure relationship with their mothers. Results of this investigation suggest that child gender is relevant for parent,infant, especially father,infant, attachment relationships. Copyright © 2006 John Wiley & Sons, Ltd. [source] Afraid in the hospital: Parental concern for errors during a child's hospitalization,,§JOURNAL OF HOSPITAL MEDICINE, Issue 9 2009Beth A. Tarini MD Abstract OBJECTIVE: (1) To determine the proportion of parents concerned about medical errors during a child's hospitalization; and (2) the association between this concern and parental self-efficacy with physician interactions. STUDY DESIGN: Cross-sectional survey. SETTING: Tertiary care children's hospital. PARTICIPANTS: Parents of children admitted to the general medical service. OUTCOME MEASURE: Parental concern about medical errors. METHODS: Parents were asked their agreement with the statement "When my child is in the hospital I feel that I have to watch over the care that he/she is receiving to make sure that mistakes aren't made." We used multivariate logistic regression to examine the association between parents' self-efficacy with physician interactions and the need "to watch over a child's care," adjusting for parent and child demographics, English proficiency, past hospitalization, and social desirability bias. RESULTS: Of 278 eligible parents, 130 completed surveys and 63% reported the need to watch over their child's care to ensure that mistakes were not made. Parents with greater self-efficacy with physician interactions were less likely to report this need (odds ratio [OR], 0.83; 95% confidence interval [CI], 0.72-0.92). All parents who were "very uncomfortable" communicating with doctors in English reported the need to watch over their child's care to prevent mistakes. CONCLUSIONS: Nearly two-thirds of surveyed parents felt the need to watch over their child's hospital care to prevent mistakes. Parents with greater self-efficacy with physician interactions were less likely to report the need to watch over their child's care while parents with lower English proficiency were more likely to report this need. Journal of Hospital Medicine 2009;4:521,527. © 2009 Society of Hospital Medicine. [source] Parent , Adolescent Relationships and Girls' Unhealthy Eating: Testing Reciprocal EffectsJOURNAL OF RESEARCH ON ADOLESCENCE, Issue 4 2002Andrea Bastiani Archibald This longitudinal study tested the direction of associations between parent ,adolescent relationships and adolescent girls' unhealthy eating. Girls (N= 184) were seen at Time 1 (M age = 14.30 years), and then again 2 years later (Time 2; M age = 16.04 years). At both assessment periods, they completed measures that assessed their eating attitudes and behaviors, relationships with their parents, height, weight, and age of menarche. Whereas unhealthy family relationships have been hypothesized as a precursor to unhealthy eating attitudes and behaviors, it is also possible that increases in these behaviors contribute to more negative relationships within the family. Structural equation modeling was employed to simultaneously investigate the longitudinal influence of parent , adolescent relationships on girls' unhealthy eating, and girls' unhealthy eating on parent , adolescent relationships. The model was tested with the following controls: body mass (kg/m2), pubertal timing and age. A longitudinal direct effect was found for unhealthy eating on parent, adolescent relationships; however, no direct effect was found for parent, adolescent relationships on unhealthy eating over time. For middle, and late,adolescent girls, it appears that unhealthy eating behaviors and attitudes are predictive of less positive parent , adolescent relationships over time. [source] A comparison of mothers' and fathers' experience of parenting stress and attributions for parent,child interaction outcomesOCCUPATIONAL THERAPY INTERNATIONAL, Issue 2 2003AccOT, SROT, Susan A. Esdaile Ph.D. Abstract Parents of children with disabilities are vulnerable to parenting stress, which may place them at physical and psychological risk. However, it is not clear whether fathers experience stress differently to mothers, or whether their experiences are reported less frequently. Additionally, there is little reported on the relationships and gender differences between mothers' and fathers' attributions for parent,child interaction outcomes. Parenting stress was assessed in this study using Abidin's (1990) Parenting Stress Index (PSI), and parenting attributions were assessed using the original (Bugental et al., 1989; Bugental and Shennum, 1984), and modified versions of the Parenting Attribution Test, also known as the Child Interaction Survey (CIS) (M-CIS: Esdaile and Greenwood, 1995b). Participants were 53 mothers and 25 fathers of children with disabilities. Having a child with a disability was associated with elevated scores on the PSI; some gender differences were found. Only one significant outcome was found on the assessment of parenting attributions. Thus, the findings suggest that further research is indicated to explore differences in mothers' and fathers' experiences of parenting stress, and the assessment of parenting attributions. The fact that having a child with a disability was associated with elevated scores on the PSI for both mothers and fathers indicates the importance of considering stress management as an integral part of occupational therapy programmes that involve parents of children with special needs. Therapists also need to consider possible gender differences when planning stress management programmes including both mothers and fathers of children with disabilities. Copyright © 2003 Whurr Publishers Ltd. [source] Short-term fitness benefits of physiological integration in the clonal herb Hydrocotyle peduncularisAUSTRAL ECOLOGY, Issue 6 2002Andrew G. Peterson Abstract We test whether physiological integration enhances the short-term fitness of the clonal herb Hydrocotyle peduncularis (Apiaceae, R. Brown ex A. Richards) subjected to spatial variation in water availability. Our measures of fitness and costs and benefits are based on the relative growth rate of fragmented genets. Physiological integration over a gradient in soil moisture resulted in a highly significant net benefit to genet growth of 0.015 g g,1 day,1. This net benefit represents a significant enhancement of the average fitness of fragmented genets spanning the moisture gradient relative to the average of those growing in homogeneous moist or dry conditions. Sections of genet fragments growing in dry conditions in spatially heterogeneous treatments had significantly higher growth than the sections they were connected to that were growing in moist conditions. Within fragments, older (parent) sections growing in moist conditions experienced significant costs from connection to younger (offspring) sections growing in dry conditions. In contrast, offspring sections with ample water did not experience any costs when connected to parent sections growing in dry conditions. However, the net benefit of physiological integration was similar for parent and offspring sections, suggesting that parent and offspring sections contributed equally to the net benefit of physiological integration to genet growth and short-term fitness. [source] "It's 10 O'Clock: Do You Know Where Your Children Are?"CHILD DEVELOPMENT PERSPECTIVES, Issue 1 2008Adolescents' Information Management, Recent Advances in Understanding Parental Monitoring ABSTRACT,Recent research has challenged the established conclusion that vigilant parental monitoring is associated with less externalizing behavior among adolescents. Measures of parental monitoring typically have focused on parents' knowledge of their children's whereabouts, not on parents' active surveillance. Recent research, which controls for parent,adolescent relationships, finds that adolescents' voluntary disclosure to parents about their activities, associates, and whereabouts is more important than previously recognized in predicting parental knowledge and, in turn, reducing teens' involvement in risky behavior. This article reviews recent research on how parents obtain knowledge of their adolescents' activities and how adolescents manage that information. The article also highlights the importance of reciprocal parent,adolescent processes. Directions for future research are discussed. [source] |