Estimation of body density in adolescent athletes

National samples of 141 male and 133 female highly-trained adolescent athletes were studied to derive anthropometric-based equations predicting body density. Anthropometric measures included skinfold thicknesses at seven sites, circum- ferences at 14 sites, and diameters at nine sites. Criterion measures of body density were determined by underwater weighing with corrections for residual lung vol- ume based on the oxygen dilution method. Variable selection procedures included factor analysis followed by forward-stepping regression and polynomial analysis. For both the male and female samples, two quadratic equations utilizing either the sum of three or seven skinfold measures were derived. Within the male sample, high validity coefficients (R = 0.81 - 0.82) and low standard errors (SEE = 0.0055 - 0.0056 g-ml !) were shown with these equations. Similar results were demon- strated with the equations for females (R = 0.82 and SEE = 0.0060 g-ml~ l). Cross- validation on independent samples of male (n = 66) and female (n = 46) adolescent athletes further confirmed these findings. In the cross-validation sample of males, predicted scores were highly correlated with actual body density (r = 0.86 - 0.87) and the total error of prediction ranged from 0.0057 to 0.0061 g-ml~ l. Among the females, these values were r = 0.82 - 0.83 and total error = 0.0058 to 0.0063 g*ml-1. These results indicate that within reasonable limits of error, the sum of three or seven skinfolds may be used to make estimates of the body density of adolescent male or female athlete

Three essays on personality characteristics and financial satisfaction

Doctor of PhilosophyDepartment of Human Ecology-Personal Financial PlanningMartin SeayLittle is known about the relationships between personality characteristics and financial satisfaction. This dissertation examines three questions. First, what are the relationships between personality characteristics and financial satisfaction at the American state level? Second, what are the relationships between personality characteristics and financial satisfaction at the individual level? Third, what are the relationships between personality characteristics and financial satisfaction among financially strained households? Essay one utilizes data aggregated at the state level from two nationally representative datasets in order to examine the relationships between Big Five personality traits (openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism) and financial satisfaction at the American state level. Results from bivariate analyses and a two-block hierarchical regression model indicate that conscientiousness is negatively associated with financial satisfaction and extraversion is positively associated with financial satisfaction at the American state level. Essay two utilizes data from the 2012 wave of the Health and Retirement Study (HRS) to examine relationships between personality characteristics (Big Five personality traits and positive/negative affect) and financial satisfaction at the individual level. Results from a three-block ordinal logistic regression model indicate that personality characteristics are important predictors of financial satisfaction. Extraversion is positively associated with financial satisfaction while neuroticism and agreeableness are negatively associated with financial satisfaction when Big Five personality traits were the only personality characteristics incorporated into the model. However, when positive affect and negative affect were added to the model, only agreeableness remained negatively associated with financial satisfaction, while both positive and negative affect were positively and negatively associated with financial satisfaction, respectively. Essay three utilizes data from the 2012 wave of the HRS to examine relationships between personality characteristics (Big Five personality traits and positive/negative affect) and financial satisfaction among individuals in households exhibiting both objective and subjective indicators of financial strain. Results from a series of ordinal logistic regressions indicate that individual level associations between personality characteristics and financial satisfaction remained largely the same among households exhibiting financial strain, though evidence suggests that interventions aimed at influencing positive affect may be an effective means to enhancing well-being among financially strained populations. Overall, personality characteristics were found to be important predictors of financial satisfaction which have been largely overlooked in prior models of financial satisfaction. Going forward, a better understanding of the relationships between personality characteristics and subjective measures of economic well-being will be needed in order to determine how consumer well-being can be most effectively promoted

Developmental Outcomes of Using Physical Violence Against Dates and Peers

The negative impact on adolescents of being a victim of violence is well documented, but the impact of being a perpetrator of violence is less well known. Knowing the negative outcomes of being a perpetrator could inform clinical interactions with adolescents, development of violence prevention strategies, and estimates of the societal burden of violence. This longitudinal study examined the effects of physical dating violence (DV) and peer violence (PV) perpetration on internalizing symptoms, relationships with friends and family, academic aspirations and grades, and substance use

Roles of residues 3 and 4 in cyclic tetrapeptide ligand recognition by the Κ -opioid receptor

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75723/1/j.1399-3011.2005.00220.x.pd

Familial Influences on Dating Violence Victimization Among Latino Youth

Despite theoretical and empirical evidence suggesting that the family environment plays a central role in Latino youth development, relatively little is known about how family processes influence dating violence victimization among Latino adolescents. To address this gap in the literature, we used data from 210 Latino parents and their 13- to 15-year-old adolescents to examine associations between several different family processes, including both parenting practices (parent monitoring, parent–adolescent communication) and aspects of the family relational climate (family cohesion, family conflict, acculturation conflict) and psychological, physical, and sexual dating violence victimization. Consistent with expectations, lower levels of family cohesion and higher levels of family and acculturation conflict were associated with risk for dating violence victimization, although associations varied depending on victimization type. In contrast, neither parental monitoring nor parent–adolescent communication was significantly associated with any type of dating violence victimization. In addition, we found that parent, but not teen, Anglo-American acculturation was associated with higher dating violence victimization risk. Findings suggest that family-based dating abuse prevention programs for Latino youth should seek to increase family cohesion and decrease family conflict, including acculturation-based conflict

A Framework for Improving the Teaching of Mathematics to Bi/Multilingual Learners

To teach mathematics well to bi/multilingual learners, we propose that mathematics teachers should consider the following five elements: know the content, know the language, know the learner, engage the community and assess meaningfully. This chapter defines each of these elements, explores how they are put into practice, and shares the responses of teachers who have participated in online professional development organized around each element. By approaching mathematics teaching with these elements in mind, teachers can more effectively support high levels of learning and achievement for bi/multilingual learners across levels of English proficiency and grade levels

Mild place illusion: a virtual reality factor to spark creativity in writing

Developments in Virtual Reality (VR) technology have modified the creative potential of each individual. We introduce a new con cept, called "mild place illusion", as a new paradigm for designing VR-based user interfaces targeted at stimulating creativity. We show that for creative tasks - such as creative writing, new product ideation, and brainstorming - a "just-enough" amount of place illu sion leads to a greater self-perception of creativity, as opposed to a "full-level" place illusion. This is a somewhat unexpected result since one would suppose, a priori, to have the full-level place illu sion as the optimal setup for stimulating creativity. We considered that the methodology in this work was fairly complex, but our re sults show – through a data triangulation approach – that we were able to identify more consistent and personal creative experiences. Therefore, the main contribution of this paper is a new paradigm for designing VR user interfaces targeted at stimulating creativity by showing that a “one-illusion interspace” leads to a greater self perception of creativity.info:eu-repo/semantics/publishedVersio

Substance Use and Physical Dating Violence: The Role of Contextual Moderators

Theoretic models suggest that associations between substance use and dating violence perpetration may vary in different social contexts, but few studies have examined this proposition. The current study examined whether social control and violence in the neighborhood, peer, and family contexts moderate the associations between substance use (heavy alcohol use, marijuana, and hard drug use) and adolescent physical dating violence perpetration