scholarly journals Impacts of Access to Contraception and Abortion Services on Men’s Life Course Outcomes: Results of Add Health Analyses

2021 ◽  
Author(s):  
Jason Fletcher
Keyword(s):  
Birth Control ◽  
Young Women ◽  
Statistical Power ◽  
Full Range ◽  
Add Health ◽  
Spillover Effects ◽  
Future Research ◽  
Adult Health ◽  
Data Limitations ◽  
Access To Contraception

A great deal of research demonstrates effects of access to contraception and abortion for women and their children, but much less research has considered the impacts of these developments for men. In this analysis, we leverage data from the National Longitudinal Study of Adolescent to Adult Health (Add Health) to explore the possibility of “spillover” effects on male high school classmates related to women’s access to contraception during adolescence and young adulthood. We use school-based surveys of sexual activity and use of birth control pills to ask whether males who attend schools with higher proportions of contracepting young women classmates have different adult outcomes than those attending schools with lower proportions. We hypothesized that higher rates of birth control use would lower the likelihood of pregnancy during the adolescent years, which would in turn increase young men’s future education levels, income levels, and age at first birth.Our analyses did not reveal statistically significant associations between birth control use and young men's longer-term education, income, and family formation outcomes. However, we speculate that these null results are more likely to reflect low statistical power and data limitations than a true lack of association between these factors. Specifically, because surveys only gather information on birth control use when women report being sexually active, the measure may not fully reflect the range of contraceptive users. Additionally, findings of “spillover” effects are expected to be smaller than main effects of contraception for women, limiting our ability to uncover these effects in modest-sized samples. Future research should explore whether larger samples allow more precision in estimates, but most data may suffer from an inability to measure “peer” young women of men under study. Nonetheless, it is important to continue examining the role of contraceptive access in men’s lives as it is a potentially important element to understanding the full range of impacts of contraceptive access on people’s life outcomes.

Does Self-control Predict Crime, Delinquency, and Victimization in Immigrants? A Longitudinal Analysis

2020 ◽  
pp. 088626052097621
Author(s):  
Makpal Kundakova ◽  
Dzhansarayeva Rima ◽  
Gulzagira Atakhanova ◽  
Nuraisha Temirbolat ◽  
Kevin M. Beaver
Keyword(s):  
Statistical Models ◽  
Empirical Support ◽  
Add Health ◽  
Self Control ◽  
Future Research ◽  
Adult Health ◽  
National Longitudinal Study ◽  
Low Levels ◽  
Low Self Control ◽  
Do So

Gottfredson and Hirschi’s theory of low self-control has generated a considerable amount of research and the results of these studies have shown that low levels of self-control are consistently associated with involvement in antisocial outcomes. Despite the empirical support for this theory, there still remain areas of it that need to be more fully evaluated. Once such area is whether self-control is associated with antisocial outcomes in samples of immigrants. The current study sought to address this gap in the literature. To do so, data drawn from the National Longitudinal Study of Adolescent to Adult Health (Add Health) were analyzed. The results of the statistical models revealed that low levels of self-control were associated with increases in self-reported delinquency, being arrested, being convicted of a crime, being sentenced to probation, being incarcerated, and being victimized. Taken together, the results of this study show that self-control is a robust predictor of antisocial outcomes among immigrants. We conclude by identifying limitations of the current study and directions for future research.

Power of Modified Brown-Forsythe and Mixed-Model Approaches in Split-Plot Designs

Methodology ◽  
2017 ◽  
Vol 13 (1) ◽  
pp. 9-22 ◽  
Author(s):  
Pablo Livacic-Rojas ◽  
Guillermo Vallejo ◽  
Paula Fernández ◽  
Ellián Tuero-Herrero
Keyword(s):  
Repeated Measures ◽  
Statistical Power ◽  
Mixed Model ◽  
Covariance Structure ◽  
Simulation Method ◽  
Future Research ◽  
Repeated Measures Design ◽  
Fixed And Random Effects ◽  
Split Plot ◽  
High Level

Abstract. Low precision of the inferences of data analyzed with univariate or multivariate models of the Analysis of Variance (ANOVA) in repeated-measures design is associated to the absence of normality distribution of data, nonspherical covariance structures and free variation of the variance and covariance, the lack of knowledge of the error structure underlying the data, and the wrong choice of covariance structure from different selectors. In this study, levels of statistical power presented the Modified Brown Forsythe (MBF) and two procedures with the Mixed-Model Approaches (the Akaike’s Criterion, the Correctly Identified Model [CIM]) are compared. The data were analyzed using Monte Carlo simulation method with the statistical package SAS 9.2, a split-plot design, and considering six manipulated variables. The results show that the procedures exhibit high statistical power levels for within and interactional effects, and moderate and low levels for the between-groups effects under the different conditions analyzed. For the latter, only the Modified Brown Forsythe shows high level of power mainly for groups with 30 cases and Unstructured (UN) and Autoregressive Heterogeneity (ARH) matrices. For this reason, we recommend using this procedure since it exhibits higher levels of power for all effects and does not require a matrix type that underlies the structure of the data. Future research needs to be done in order to compare the power with corrected selectors using single-level and multilevel designs for fixed and random effects.

The Limits of Ego Depletion

2019 ◽  
Vol 50 (5-6) ◽  
pp. 292-304 ◽  
Author(s):  
Mario Wenzel ◽  
Marina Lind ◽  
Zarah Rowland ◽  
Daniela Zahn ◽  
Thomas Kubiak
Keyword(s):  
Research Agenda ◽  
Statistical Power ◽  
Interindividual Variability ◽  
Ego Depletion ◽  
Crossover Design ◽  
Effect Sizes ◽  
Future Research ◽  
Future Research Agenda ◽  
Depletion Effect ◽  
Within Subjects

Abstract. Evidence on the existence of the ego depletion phenomena as well as the size of the effects and potential moderators and mediators are ambiguous. Building on a crossover design that enables superior statistical power within a single study, we investigated the robustness of the ego depletion effect between and within subjects and moderating and mediating influences of the ego depletion manipulation checks. Our results, based on a sample of 187 participants, demonstrated that (a) the between- and within-subject ego depletion effects only had negligible effect sizes and that there was (b) large interindividual variability that (c) could not be explained by differences in ego depletion manipulation checks. We discuss the implications of these results and outline a future research agenda.

Depressive Traits and Theory of Mind in Healthy Individuals: A Mediation Study

2018 ◽  
Author(s):  
Nicholas James Rowark
Keyword(s):  
Theory Of Mind ◽  
Executive Functions ◽  
Executive Control ◽  
Statistical Power ◽  
Social Cognitive ◽  
Clinical Sample ◽  
Small Sample ◽  
Future Research ◽  
Healthy Individuals ◽  
Prepotent Response

Depression has been associated with poor social cognitive functioning, including impaired performance on measures of theory of mind. However, the association between depression and theory of mind performance has been removed when controlling for differences in executive functioning, which is also impacted by depression. Among these executive functions, inhibition of prepotent response has been demonstrated as enabling success on theory of mind tests. In the context of these findings, the current investigation tested whether a relationship could be found between depressive traits and theory of mind in a non-clinical sample, and whether this relationship was mediated by differences in executive control of inhibition. Theory of mind was assessed in 31 healthy individuals using an audio-presented false-belief reasoning task, which also tested baseline performance in non-mental-state reasoning. Inhibition of prepotent response was assessed with interference measures on a Stroop colour-word task, and depressive traits were self-reported through the second version of the Beck Depression Inventory. Mediation analysis revealed that executive control of inhibition did not significantly mediate an indirect effect of depressive traits on theory of mind. It was interpreted that relationships previously found between major depression, executive and social-cognitive functions do not generalise beyond clinical boundaries. However, these findings are discussed in terms of the small sample size, limiting statistical power, and several methodological limitations. Future research should assess the relationship between depressive traits and theory of mind using alternative measures of mental representation, or include a neurocognitive battery assessing executive functions other than inhibition.

Investments by Emerging-Market Multinationals in Other Emerging Markets

2018 ◽  
pp. 630-656
Author(s):  
Jing Li ◽  
Daniel Shapiro
Keyword(s):  
Sustainable Development ◽  
Corporate Governance ◽  
Emerging Economies ◽  
Multinational Enterprises ◽  
Emerging Market ◽  
Institutional Development ◽  
Spillover Effects ◽  
Investment Strategy ◽  
Future Research ◽  
Foreign Direct Investments

This chapter reviews the literature on foreign direct investments among emerging economies (E-E FDI), focusing on the motivations behind E-E FDI, country-specific advantages and firm-specific advantages associated with emerging-economy multinational enterprises (EMNEs), and spillover effects of E-E FDI on host-country economic and institutional development. We identify the following topics as posing important questions for future research: EMNEs’ ability to leverage home-government resources and diplomatic connections to promote investment in other emerging economies; nonmarket strategies of EMNEs in emerging economies; ownership and corporate governance affecting investment strategy and performance of EMNEs; E-E FDI contributions to sustainable development in host countries. Future studies should also consider potential heterogeneity among EMNEs by integrating insights from institutional theory, network theory, political science, corporate governance, corporate social responsibility, and sustainable-development research.

Small-Scale Deliberation and Mass Democracy: A Systematic Review of the Spillover Effects of Deliberative Minipublics

2021 ◽  
pp. 003232172110072
Author(s):  
Ramon van der Does ◽  
Vincent Jacquet
Keyword(s):  
Systematic Review ◽  
Empirical Evidence ◽  
Empirical Research ◽  
Spillover Effects ◽  
Future Research ◽  
Small Scale ◽  
Long Term Effects ◽  
Current Crisis ◽  
Mass Democracy

Deliberative minipublics are popular tools to address the current crisis in democracy. However, it remains ambiguous to what degree these small-scale forums matter for mass democracy. In this study, we ask the question to what extent minipublics have “spillover effects” on lay citizens—that is, long-term effects on participating citizens and effects on non-participating citizens. We answer this question by means of a systematic review of the empirical research on minipublics’ spillover effects published before 2019. We identify 60 eligible studies published between 1999 and 2018 and provide a synthesis of the empirical results. We show that the evidence for most spillover effects remains tentative because the relevant body of empirical evidence is still small. Based on the review, we discuss the implications for democratic theory and outline several trajectories for future research.

An Examination of How DUI-Child Endangerment Laws Are Used in Court

2021 ◽  
pp. 036119812110252
Author(s):  
Eduardo Romano ◽  
Tara Kelley-Baker ◽  
Eileen P. Taylor
Keyword(s):  
Drunk Driving ◽  
Driving Under The Influence ◽  
Future Research ◽  
Data Limitations ◽  
Mothers Against Drunk Driving

Each year, about 200 children aged 14 years old (y/o) or less die and another 4,000 are physically injured while being driven by an adult that has been drinking (aged 21 y/o or more). Concerned by this phenomenon, there are a growing number of States implementing Driving Under the Influence – Child Endangerment (DUI-CE) laws to prevent adults from driving under the influence with children. These laws however, have failed to reduce the rates of DUI-CE injuries and fatalities. It has been hypothesized that such a failure occurs, at least in part, because these laws are being pled-down in courts, this study examines this hypothesis. We analyzed DUI-CE related court information collected by court monitors available in the Court Monitoring Database (CMD) provided by the Mothers Against Drunk Driving (MADD). Despite investigating data that included only DUI offenders who were driving with at least one child passenger at the time of the arrest, only 10% of those charged with a DUI felony and 11% of those charged with a misdemeanor were also found guilty of a DUI-CE violation. These findings support the hypothesis that DUI-CE offenses are being pled down in court and probably contribute to the ineffectiveness of DUI-CE laws. Unfortunately, data limitations preclude any decisive conclusions. Future research should focus on increasing our understanding of the DUI-CE problem and understanding why DUI-CE laws are not working toward the goal of deterring and punishing those who endanger the lives of children.

‘I told him I’m gonna get it’: intimate partner birth control communication among homeless young women

2022 ◽  
pp. 1-17
Author(s):  
Olivia N. Kachingwe ◽  
Danielle R. Phillips ◽  
Michelle Jasczynski ◽  
Emily Hillig ◽  
Rebecca Chavez ◽  
...  
Keyword(s):  
Birth Control ◽  
Young Women ◽  
Intimate Partner

scholarly journals Power analyses for moderator effects with (non)randomly varying slopes in cluster randomized trials

Methodology ◽  
2021 ◽  
Vol 17 (2) ◽  
pp. 92-110
Author(s):  
Nianbo Dong ◽  
Jessaca Spybrook ◽  
Benjamin Kelcey ◽  
Metin Bulus
Keyword(s):  
Statistical Power ◽  
Randomized Trials ◽  
Future Research ◽  
Size Difference ◽  
Detectable Effect ◽  
Cluster Randomized Trials ◽  
Individual Level ◽  
Moderator Effects ◽  
Cluster Randomized ◽  
Power Analyses

Researchers often apply moderation analyses to examine whether the effects of an intervention differ conditional on individual or cluster moderator variables such as gender, pretest, or school size. This study develops formulas for power analyses to detect moderator effects in two-level cluster randomized trials (CRTs) using hierarchical linear models. We derive the formulas for estimating statistical power, minimum detectable effect size difference and 95% confidence intervals for cluster- and individual-level moderators. Our framework accommodates binary or continuous moderators, designs with or without covariates, and effects of individual-level moderators that vary randomly or nonrandomly across clusters. A small Monte Carlo simulation confirms the accuracy of our formulas. We also compare power between main effect analysis and moderation analysis, discuss the effects of mis-specification of the moderator slope (randomly vs. non-randomly varying), and conclude with directions for future research. We provide software for conducting a power analysis of moderator effects in CRTs.

scholarly journals Interspecific Interactions: A Case Study using the Tuatara-Fairy Prion Association

2021 ◽  
Author(s):  
◽  
Ilse Corkery
Keyword(s):  
Body Temperature ◽  
Interspecific Interactions ◽  
Full Range ◽  
Laboratory Data ◽  
Temperate Climate ◽  
Future Research ◽  
Positive Interactions ◽  
Lifetime Reproductive Success ◽  
Body Temperatures ◽  
Burrow Use

<p>Some of the key relationships in the life of an organism are interactions with individuals of other species within the community, for example, negative interactions such as predation and competition are well known to shape natural communities. Positive interactions also have well documented influences, such as intertidal seaweed canopies extending the distribution of many organisms to higher tidal heights, by reducing thermal and desiccation stresses. However, investigating interactions and measuring their significance for fitness is notoriously difficult. For example, several groups of fish are known to ‘clean’ other fish species by feeding on their ectoparasites, a mutually beneficial arrangement. However, foraging by cleaners can damage scales of their hosts and this interaction can become parasitic in times of low ectoparasite abundance. Using both field and laboratory data, I investigated factors that influenced the dynamics of an unusual vertebrate association, the cohabitation of tuatara and fairy prions in a burrow. The end goal was to contribute to the understanding of the classification of this association. The fairy prion is a seabird that comes to land only for the breeding season and the tuatara is a burrowing reptile, active primarily at night in a temperate climate. Specifically, I measured the effects that this association had on tuatara thermoregulation, and demonstrated the difficulty in applying that information to categorize a complex interaction. Investigations into the temporal and spatial habitat of the tuatara, and the degree to which this influenced thermal opportunities, revealed that mean tuatara body temperatures were always within mean environmental temperatures. Males and females did not differ in mean body temperature or effectiveness of thermoregulation. Body size did not predict body temperature or cooling rates, but heating rates were influenced, with larger animals heating faster than smaller individuals. The presence of a fairy prion in a burrow increased humidity within the burrow, and tuatara that occupied burrows containing a fairy prion were able to maintain up to 1.8°C higher body temperatures through the night during the austral summer months. Thus, burrow use behaviour and burrow selection had greater influences on tuatara body temperature than an individual’s sex or size. Experimental evidence revealed that tuatara are capable of adjusting their habitat selection behaviour in response to different humidity constraints. More time was spent outside the burrows and tuatara were more active under humid laboratory conditions. Use of the burrow by tuatara almost halved the time that fairy prions spent at the burrow with their chick, indicating that tuatara were having a negative effect on fairy prions’ use of their burrow. There was no evidence to support the fact that fairy prions were gaining any fitness benefits from their association with tuatara. Thus, we cannot call this interaction a commensalism or a mutualism. In certain instances, it may be that this interaction is best classed as a parasitism with the tuatara benefitting from burrow use and easy predation opportunities, to the detriment of the lifetime reproductive success of the fairy prion. In other instances it may simply be a case of competition for a limited resource (a burrow) with the outcome varying depending on the individuals and the circumstances involved. Being able to categorize interactions between species of high conservation value or at least to have an understanding of the costs and benefits associated with the interaction is desirable for conservation purposes, as failure to consider the ecological network within which a threatened species is embedded, may lead to counterproductive management measures. Further, these results can be used to develop future research into how climatic changes in temperature and rainfall may interact with habitat availability to influence the full range of natural outcomes of the tuatara-fairy prion association.</p>

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