Findings

Being there

Kevin Lewis

June 20, 2013

The Effects of Paternal Disengagement on Women's Sexual Decision Making: An Experimental Approach

Danielle DelPriore & Sarah Hill
Journal of Personality and Social Psychology, forthcoming

Abstract:
An abundance of research demonstrates a robust association between father absence - or low-quality paternal involvement - and daughters' accelerated sexual development, promiscuity, and sexual risk taking. Although recent natural experiments provide support for fathers playing a causal role in these outcomes, these effects have not been examined using a randomized experimental design to eliminate genetic and environmental confounds inherent in previous studies. We redressed this empirical gap by experimentally testing the effects of primed paternal disengagement cues on women's sexual decision making. Across 5 experiments, reminders of paternal disengagement increased women's activation of sexual thoughts (Experiment 1), sexual permissiveness (Experiments 2-4), and negativity toward condom use (Experiment 5). Moreover, these effects were specific to women's sexual decision making, as paternal disengagement cues failed to influence women's willingness to take nonsexual risks (Experiment 4) or men's risky sexual attitudes (Experiment 5). These results provide the first true experimental evidence supporting a causal relationship between paternal disengagement and changes in women's psychology that promote risky sexual behavior.

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Career, Family, and the Well-Being of College-Educated Women

Marianne Bertrand
American Economic Review, May 2013, Pages 244-250

Abstract:
I report on measures of life satisfaction and emotional well-being across groups of college-educated women, based on whether they have a career, a family, both, or neither. The biggest premium to life satisfaction is associated with having a family. While there is also a life satisfaction premium associated with having a career, women do not seem able to "double up" on these premiums. A qualitatively similar picture emerges from the emotional well-being data. Among college-educated women with family, those with a career spend a larger share of their day unhappy, sad, stressed and tired.

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Fathers and the Flexibility Stigma

Scott Coltrane et al.
Journal of Social Issues, June 2013, Pages 279-302

Abstract:
Women face an earnings penalty associated with motherhood but researchers have paid scant attention to how fatherhood might influence men's long-term earnings. Using multiple waves of the National Longitudinal Survey of Youth and employing ordinary least squares regression and fixed effects models we investigate what happens to men who modify their employment for family reasons. Previous research shows that men work longer hours and earn more after becoming fathers, but if men are unemployed or reduce work hours for family reasons, they could experience a "flexibility stigma" depressing earnings and limiting future career opportunities. We find strong support for the flexibility stigma hypothesis. Controlling for the effects of age, race, education, intelligence, occupation, job tenure, work hours, health limitations, marital status, and number of children, we find that men who ever quit work or are unemployed for family reasons earn significantly less than others in the future. Theoretical reasons for observed findings are discussed.

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Harsh Parenting and Adolescent Health: A Longitudinal Analysis With Genetic Moderation

Gene Brody et al.
Health Psychology, forthcoming

Objective: This study was designed to examine the prospective relations of harsh parenting during preadolescence, anger across adolescence, and a health phenotype at late adolescence among African American youths living in the rural South. A second purpose was to determine whether, for genetic reasons, some youths will be more sensitive than others to a harsh parenting to anger to poor health pathway.

Method: Participants were 368 youths (age 11.2 at the first assessment) who provided data on receipt of harsh parenting during preadolescence (ages 11 to 13), anger across adolescence (ages 16 to 18), and a health phenotype consisting of C Reactive Protein, depressive symptoms, and health problems at age 19. Youths were genotyped at the 5-HTTLPR at age 16.

Results: The data analysis revealed that (a) harsher parenting was associated positively across time with anger and poor health, (b) anger across adolescence also was associated positively across time with poor health, (c) anger served as a mediator connecting harsh parenting and poor health, and (d) the harsh parenting to anger to poor health pathway was significant only for youths carrying one or two copies of a short allele at the 5-HTTLPR.

Conclusions: These findings are consistent with the hypothesis that harsh parent-child interactions presage health through effects on emotion regulation, particularly anger. This mediational pathway pertained only to youths carrying a gene that confers sensitivity and reactivity to harsh family processes and the negative emotional states they occasion.

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Ordered Delinquency: The "Effects" of Birth Order on Delinquency

Patrick Cundiff
Personality and Social Psychology Bulletin, forthcoming

Abstract:
Juvenile delinquency has long been associated with birth order in popular culture. While images of the middle child acting out for attention or the rebellious youngest child readily spring to mind, little research has attempted to explain why. Drawing from Adlerian birth order theory and Sulloway's born-to-rebel hypothesis, I examine the relationship between birth order and a variety of delinquent outcomes during adolescence. Following some recent research on birth order and intelligence, I use new methods that allow for the examination of between-individual and within-family differences to better address the potential spurious relationship. My findings suggest that contrary to popular belief, the relationship between birth order and delinquency is spurious. Specifically, I find that birth order effects on delinquency are spurious and largely products of the analytic methods used in previous tests of the relationship. The implications of this finding are discussed.

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Association of Sibling Aggression With Child and Adolescent Mental Health

Corinna Jenkins Tucker et al.
Pediatrics, forthcoming

Objective: Sibling aggression is common but often dismissed as benign. We examine whether being a victim of various forms of sibling aggression is associated with children's and adolescents' mental health distress. We also contrast the consequences of sibling versus peer aggression for children's and adolescents' mental health.

Methods: We analyzed a national probability sample (n = 3599) that included telephone interviews about past year victimizations conducted with youth aged 10 to 17 or an adult caregiver concerning children aged 0 to 9.

Results: Children ages 0 to 9 and youth ages 10 to 17 who experienced sibling aggression in the past year (ie, psychological, property, mild or severe physical assault), reported greater mental health distress. Children ages 0 to 9 showed greater mental health distress than did youth aged 10 to 17 in the case of mild physical assault, but they did not differ for the other types of sibling aggression. Comparison of sibling versus peer aggression generally showed that sibling and peer aggression independently and uniquely predicted worsened mental health.

Conclusions: The possible importance of sibling aggression for children's and adolescents' mental health should not be dismissed. The mobilization to prevent and stop peer victimization and bullying should expand to encompass sibling aggression as well.

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Common Genes or Exogenous Shock? Disentangling the Causal Effect of Paternal Unemployment on Children's Schooling Efforts

Signe Hald Andersen
European Sociological Review, June 2013, Pages 477-488

Abstract:
A number of studies analyse the relationship between parents' labour market status and various child outcomes, without considering if the relationship is causal. However, within this field of study, the question of causality is of substantial interest, as it shows if the unemployment makes the difference or if the child would have experienced the observed outcome regardless of its parents' employment status. Therefore, this study analyses if the relationship between a father's unemployment and a child's schooling ambitions is causal. The study uses data from the British Household Panel Survey and analyses these with a fixed effects ordered logit. The results show that the father's unemployment does in fact have a causal effect on the child's schooling ambitions.

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Inheritances, Intergenerational Transfers, and the Accumulation of Health

Katherine Grace Carman
American Economic Review, May 2013, Pages 451-455

Abstract:
This paper considers the mechanisms behind a positive correlation between inheritances and health. First, there may merely be a correlation: those from families with enough wealth to provide an inheritance tend to have better health. Second, financial resources could be used to purchase inputs to health. Third, bequests may signal a stronger interest in one's child. This reminder to the child could improve their emotional well-being. On average, the positive correlation suggests merely correlation. However, among subsets of the population, particularly men and those expecting to receive an inheritance, there is a causal relationship likely driven by the third mechanism.

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When Equal Isn't Really Equal: The Masculine Dilemma of Seeking Work Flexibility

Joseph Vandello et al.
Journal of Social Issues, June 2013, Pages 303-321

Abstract:
Two studies explored gender-relevant expectations and consequences of seeking flexible work arrangements. Study 1 examined preferences and expectations of students nearing the job market. While men and women valued work flexibility and work-life balance equally, women reported greater intentions to seek flexibility in their careers. Intentions were predicted by projected perceptions on gender-relevant traits. In Study 2, participants evaluated hypothetical targets who sought a flexible work arrangement after the birth of a child. Flexibility seekers were given lower job evaluations than targets with traditional work arrangements; however, they were also seen as warmer and more moral. Men may be particularly penalized at the character level, as flexibility seekers were seen as less masculine and rated lower on masculine prescriptive traits and higher on feminine prescriptive traits. Together these studies suggest that while men value work flexibility they may be reluctant to seek it because of (potentially well-founded) fears of stigmatization.

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Latino Parents' Plans to Communicate About Sexuality With their Children

Maureen Kenny & Sandy Wurtele
Journal of Health Communication, forthcoming

Abstract:
This study investigated 86 Latino parents' intentions to communicate about sexuality issues with their children. They reported on their history of sexuality education, when they would first discuss sexuality-related topics, and their perceived effectiveness of each topic. Compared with a sample of Caucasian parents, Latino parents intended to discuss sexual abuse/molestation at an earlier age, but planned to discuss human reproduction, intercourse, and AIDS at significantly later ages. Suggestions for assisting Latino parents with communications regarding sexuality topics are provided.

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Low Birth Weight and Parental Investment: Do Parents Favor the Fittest Child?

Jamie Lynch & Ryan Brooks
Journal of Marriage and Family, June 2013, Pages 533-543

Abstract:
Do parents contribute to birth weight disparities in status attainment? This study uses a nationally representative sample of 8,550 children and 1,450 twins from the Early Childhood Longitudinal Study-Birth Cohort to investigate whether, as recent studies have suggested, parents favor healthier children. Children with poor health are found to receive fewer parental investments, including breast-feeding and quality parent-child interaction, but results from between- and within-family regression models, using low birth weight as a proxy for child health, find no evidence that parents compensate for or reinforce child health endowments. Instead, birth-weight disparities in parental investment are linked with observable family, maternal, and child sociodemographic characteristics. Our results raise doubts about the utility of human capital models to explain health disparities in parental investment and shed new light on the broad spectrum of disadvantage faced by children with poor health.

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Birth Weight and Family Status Revisited: Evidence from Austrian Register Data

Wolfgang Frimmel & Gerald Pruckner
Health Economics, forthcoming

Abstract:
In this paper, we study the socio-economic determinants of birth weight, with a focus on the mother's family status. We use Austrian birth register data covering all births between 1984 and 2007 and find that a mother's marriage is associated with a higher birth weight of the newborn, in the range of 40 to 60 g. The significant impact is retained if we include mother fixed effects or use an instrumental variable approach to account for unobserved mother heterogeneity. However, the magnitude of the causal effect (37 g) clearly indicates the importance of selection into marriage. Divorce around pregnancy results in significantly lower birth weights than the birth weights of babies born to single mothers. Family status effects in the 2000s are stronger than they were in the 1980s, and quantile regressions suggest that family effects are more pronounced at the lower quantiles of the birth weight distribution and less pronounced at higher quantiles. We conclude that the life situation of expectant mothers has an important influence on the birth weight of newborns, especially at the lower tail of the birth weight distribution.

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Center-Based Child Care and Cognitive Skills Development: Importance of Timing and Household Resources

Elizabeth Votruba-Drzal et al.
Journal of Educational Psychology, forthcoming

Abstract:
Growing evidence has linked center-based early care and education settings to improvements in children's cognitive skills. Additional research is needed to more carefully delineate when and for whom these associations are most pronounced. Using data from the Early Childhood Longitudinal Study, Birth Cohort (N ≈ 6,350; Flanagan & West, 2004), this study examined whether the beneficial effects of center-based care settings for children's cognitive skills at age 5 differ by the age at which children experience these settings and for subgroups based on household income, parental education, and quality of the home learning environment. The results suggest that center-based preschool was supportive of the math and reading skills development of the sample as a whole. However, both center- and home-based care for 2-year-olds as well as 4-year-olds were beneficial for children from lower income, less educated, and less enriching family contexts, helping to diminish the cognitive skills gap between more and less advantaged children.

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Workplace Mistreatment of Middle Class Workers Based on Sex, Parenthood, and Caregiving

Jennifer Berdahl & Sue Moon
Journal of Social Issues, June 2013, Pages 341-366

Abstract:
Research suggests that women, but not men suffer negative professional consequences if they have children. These unequal consequences can be attributed to stereotypes about women's and men's roles as caregivers and breadwinners for their families, respectively. Two field studies of workplace mistreatment among middle-class employees examined whether fathers who violate these gender stereotypes by actively caregiving for their families suffer negative consequences at work. Study 1 (N = 232) examined not man enough harassment (being derogated as insufficiently masculine) and Study 2 (N = 451) examined general forms of mistreatment. Results showed that caregiving fathers experience more harassment and mistreatment than traditional fathers and than men without children. Women without children experience more harassment and mistreatment than mothers, and mothers who spend less time on caregiving experience more harassment and mistreatment than mothers who spend more time on caregiving. We discuss implications for theory and practice.

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Impact of divorce and loss of parental contact on health complaints among adolescents

Simone Frizell Reiter et al.
Journal of Public Health, June 2013, Pages 278-285

Background: Mental health consequences related to divorce have been documented, but might be caused by concomitant factors such as conflicts and loss of parental contact (PC). We investigated these relationships and mental health among adolescents.

Methods: The study was based on data from four cross-sectional surveys carried out between 1997 and 2009 among tertiary school students in Førde, Norway. We established two groups according to divorce experience (DE) with or without loss of PC. Frequencies of DEs were calculated with 95% confidence intervals. The group with no DE was used as reference group in all the analyses.

Results: The divorce rate increased by 34% (6.8% absolute increase) between 1997 and 2009, but no sign of attenuated effects on emotional health was observed. Mental complaints were not attenuated as time since divorce increased. A majority of those losing contact with parents had no contact with their fathers. The study revealed only a modest increase of health complaints if PC was preserved, but a marked increase when the adolescents experienced loss of PC following the divorce. Interaction analyses showed no gender differences, and parental support and confidence in parent(s) did not mediate the associations between divorce and distress.

Conclusions: Emotional distress after divorce is not attenuated as divorce prevalence increases, but the deleterious effects of divorce on the well-being of adolescents seem to be confined to those experiencing a concomitant loss of PC. Efforts aiming at reducing parental hostility and improving mutual parental responsibility and care therefore seem important.

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Education, Birth Order, and Family Size

Jesper Bagger et al.
NBER Working Paper, June 2013

Abstract:
We introduce a general framework to analyze the trade-off between education and family size. Our framework incorporates parental preferences for birth order and delivers theoretically consistent birth order and family size effects on children's educational attainment. We develop an empirical strategy to identify these effects. We show that the coefficient on family size in a regression of educational attainment on birth order and family size does not identify the family size effect as defined within our framework, even when the endogeneity of both birth order and family size are properly accounted for. Using Danish administrative data we test the theoretical implications of the model. The data does not reject our theory. We find significant birth order and family size effects in individuals' years of education thereby confirming the presence of a quantity-quality trade off.

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Breastfeeding and early white matter development: A cross-sectional study

Sean Deoni et al.
NeuroImage, forthcoming

Abstract:
Does breastfeeding alter early brain development? The prevailing consensus from large epidemiological studies posits that early exclusive breastfeeding is associated with improved measures of IQ and cognitive functioning in later childhood and adolescence. Prior morphometric brain imaging studies support these findings, revealing increased white matter and sub-cortical gray matter volume, and parietal lobe cortical thickness, associated with IQ, in adolescents who were breastfed as infants compared to those who were exclusively formula-fed. Yet it remains unknown when these structural differences first manifest and when developmental differences that predict later performance improvements can be detected. In this study, we used quiet magnetic resonance imaging (MRI) scans to compare measures of white matter microstructure (mcDESPOT measures of myelin water fraction) in 133 healthy children from 10 months through 4 years of age, who were either exclusively breastfed a minimum of 3 months; exclusively formula-fed; or received a mixture of breast milk and formula. We also examined the relationship between breastfeeding duration and white matter microstructure. Breastfed children exhibited increased white matter development in later maturing frontal and association brain regions. Positive relationships between white matter microstructure and breastfeeding duration are also exhibited in several brain regions, that are anatomically consistent with observed improvements in cognitive and behavioral performance measures. While the mechanisms underlying these structural differences remains unclear, our findings provide new insight into the earliest developmental advantages associated with breastfeeding, and support the hypothesis that breast milk constituents promote healthy neural growth and white matter development.

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Impact of Neonatal Growth on IQ and Behavior at Early School Age

Lisa Smithers et al.
Pediatrics, forthcoming

Objectives: The objective was to examine associations of neonatal weight gain (NWG) and head circumference gain (HCG) with IQ scores and behavior at early school age.

Methods: We used data from the Promotion of Breastfeeding Intervention Trial, involving Belarusian infants born full term and weighing ≥2500 g. NWG and HCG were measured as the percentage gain in weight and head circumference over the first 4 weeks relative to birth size. IQ and behavior were measured at 6.5 years of age by using the Wechsler Abbreviated Scales of Intelligence and the Strengths and Difficulties Questionnaire (SDQ), respectively, with SDQ collected from parents and teachers. The associations between the exposures (NWG, HCG) and children's IQ and SDQ were examined by using mixed models to account for clustering of measurements, and adjustment for potentially confounding perinatal and socioeconomic factors.

Results: Mean NWG was 26% (SD 10%) of birth weight. In fully adjusted models, infants in the highest versus lowest quartile of NWG had 1.5-point (95% confidence interval [CI] 0.8 to 2.2) higher IQ scores (n = 13 840). A weak negative (protective) association between NWG and SDQ total difficulties scores was observed for the teacher-reported (β = -0.39, 95% CI -0.71 to -0.08, n = 12 016), but not the parent-reported (β = -0.12, 95% CI -0.39 to 0.15, n = 13 815), SDQ. Similar associations were observed with HCG and IQ and behavior.

Conclusions: Faster gains in weight or head circumference in the 4 weeks after birth may contribute to children's IQ, but reverse causality (brain function affects neonatal growth) cannot be excluded.

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Repartnering Following Divorce: Implications for Older Fathers' Relations With Their Adult Children

Claire Noël-Miller
Journal of Marriage and Family, June 2013, Pages 697-712

Abstract:
This study examined the implications of postdivorce fathers' new unions and additional (step)children for two aspects of older fathers' relations with adult children born from a prior relationship: frequency of social contact and fathers' financial transfers. Data from multiple waves of the Health and Retirement Study (N = 13,017 observations on 4,997 adult children belonging to 1,917 ever-divorced fathers) were used to estimate multilevel models. The results indicated that divorced fathers who go on to form a new union have weaker relations with adult children from a prior union than their postdivorce counterparts who remain single. This finding partly reflects the detrimental effects of repartnered older fathers' new biological children and stepchildren. There is no difference between older remarried and cohabiting fathers' intergenerational ties. Moreover, fathers' additional biological children and stepchildren have similarly negative effects on fathers' relations with adult children from a previous union.

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Tweens at Risk: Examining Car Safety Practices in Four Economically Disadvantaged Urban Elementary Schools in Virginia

Kelli England Will, Krystall Dunaway & Edward Lorek
Journal of Safety Research, September 2013, Pages 77-82

Introduction: Children aged 8- to 12-years-old ("tweens") are at high risk for crash injury, and motor vehicle crashes are their leading cause of death.

Method: Data are presented from behavioral observations (N = 243), surveys (N = 677), and focus groups (N = 26) conducted with tweens attending four urban elementary schools in Virginia. The populations assessed were predominantly Black (77.9%) and economically disadvantaged (61.9%).

Results: Focus groups revealed a number of inconsistencies in and misconceptions about safety practices. Among the 677 tweens who completed anonymous surveys, the majority (58.1%) reported wearing their seat belts "not very much at all" or "never." Many students (47.8%) reported usually sitting in the front seat or sitting in the front and back seats equally. This is despite the fact that most (92.0%) knew that the back seat was the safest place to sit. Of the 243 tweens observed in vehicles, 65.0% were unrestrained and 60.1% were seated in the front passenger seat.

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Monoamine Oxidase A Genotype, Childhood Trauma, and Subclinical Atherosclerosis: A Twin Study

Jinying Zhao et al.
Psychosomatic Medicine, June 2013, Pages 471-477

Objective: A functional promoter polymorphism in the monoamine oxidase A (MAOA) gene has been implicated in neuropsychiatric disorders and also moderates the association between early-life stress and mental disorders, which often co-occur with cardiovascular disease. No study has examined the relationship between MAOA genotype, childhood trauma, and subclinical atherosclerosis. The objective of this investigation was to examine whether childhood trauma moderates the association between MAOA genotype and subclinical atherosclerosis.

Methods: A sample including 289 middle-aged male twin pairs was studied. Subclinical atherosclerosis was assessed by brachial flow-mediated dilation (FMD) using ultrasound. Childhood trauma, before age 18 years, was measured with the Early Trauma Inventory and included physical, emotional, and sexual abuse as well as general trauma. Generalized estimating equation models were used to test the main and interactive effects of the MAOA genotype and each domain of childhood trauma on FMD, adjusting for known risk factors.

Results: General trauma was the most prevalent childhood trauma (28.4%), followed by physical abuse (25.0%), emotional abuse (19.4%), and sexual abuse (11.6%). MAOA genotype was not associated with any domain of childhood trauma. There was no significant evidence for a main effect for the MAOA genotype (β = .02, p = .82) or childhood trauma (.005 < β < .10, p > .54) FMD. However, a significant interaction was observed between MAOA genotype and physical (βinteraction = .37, p = .026) or emotional abuse (βinteraction = .43, p = .025) on subclinical atherosclerosis.

Conclusions: Childhood trauma modulates the impact of MAOA variant on subclinical atherosclerosis, independent of traditional cardiovascular risk factors.

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The Association Between Prepregnancy Parental Support and Control and Adolescent Girls' Pregnancy Resolution Decisions

Aubrey Spriggs Madkour, Yiqiong Xie & Emily Harville
Journal of Adolescent Health, forthcoming

Purpose: To examine the influence of prepregnancy parental support and control on adolescent girls' pregnancy resolution decisions.

Methods: Data from the National Longitudinal Study of Adolescent Health were analyzed. Girls whose first pregnancy reported in wave IV occurred after wave I and before age 20 were included (n = 1,107). Participants self-reported pregnancy disposition (abortion, ectopic or tubal pregnancy, miscarriage, stillbirth, live birth) for each pregnancy; responses were dichotomized as abortion versus other. Girls' perceptions of parental support and control were measured at wave I. Controls were included for wave I age, age at pregnancy, year at the end of pregnancy, race/ethnicity, and parent characteristics (i.e., education, religious affiliation, age at first marriage, and educational expectations). Weighted multivariable logistic regression models were performed.
Results: Approximately 18% of girls reporting a teen pregnancy reported having an abortion. In crude analyses, parental support was marginally negatively related to abortion (odds ratio [OR] = .83, p = .06) and parental control was significantly negatively related to abortion (OR = .78, p = .02). In multivariable analyses, higher parental control was significantly negatively related to abortion versus other pregnancy outcomes (adjusted OR .80, 95% confidence interval .66-.98). Perceived parental support was unassociated with pregnancy resolution decisions. The only other factor associated with abortion decisions was parent education: odds of choosing abortion versus other pregnancy outcomes were significantly higher for adolescent girls whose parents had a bachelor's degree or greater versus those with lower educational attainment.

Conclusions: Pregnant adolescents with less educated parents or parents exercising greater control were less likely to have an abortion.

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Penalizing Men Who Request a Family Leave: Is Flexibility Stigma a Femininity Stigma?

Laurie Rudman & Kris Mescher
Journal of Social Issues, June 2013, Pages 322-340

Abstract:
Men who request a family leave are viewed as poor organizational citizens and ineligible for rewards. In addition to a poor worker stigma, we found that male leave requesters suffer femininity stigma. Compared with control targets, male leave requesters were viewed as higher on weak, feminine traits (e.g., weak and uncertain), and lower on agentic masculine traits (e.g., competitive and ambitious). Perceptions of weakness uniquely predicted greater risk for penalties (e.g., being demoted or downsized) and fully accounted for the effect of poor worker stigma on male leave requesters' penalties. By contrast, the poor worker stigma and both agency and weakness perceptions contributed to their reward recommendations. Results were comparable regardless of the reason given for requesting a family leave, target race (White or Black), and participant gender. The implications of these findings for work-life balance and gender equality are discussed.

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Nonmaternal Care's Association With Mother's Parenting Sensitivity: A Case of Self-Selection Bias?

Kei Nomaguchi & Alfred DeMaris
Journal of Marriage and Family, June 2013, Pages 760-777

Abstract:
Although attachment theory posits that the use of nonmaternal care undermines quality of mothers' parenting, empirical evidence for this link is inconclusive. Using data from the National Institute of Child Health and Human Development Study of Early Child Care and Youth Development (N = 1,233), the authors examined the associations between nonmaternal care characteristics and maternal sensitivity during the first 3 years of children's lives, with special attention to selection effects and moderation by resource levels. Findings from fixed-effects regression models suggested that, on average, there is little relationship between nonmaternal care characteristics and maternal sensitivity, once selection factors are held constant. Some evidence of moderation effects was found, however. Excellent-quality care is related to more sensitivity for mothers with lower family income. Poor-quality care is related to lower sensitivity for single mothers, but not partnered mothers. In sum, nonmaternal care characteristics do not seem to have as much influence on mothers' parenting as attachment theory claims.

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Neuroendocrine coupling across adolescence and the longitudinal influence of early life stress

Paula Ruttle et al.
Developmental Psychobiology, forthcoming

Abstract:
Drawing on conceptual models illustrating the advantages of a multisystemic, interactive, developmental approach to understanding development, the present study examines the covariation of stress and sex hormones across the adolescent transition and the effect of early life stress (ELS) on neuroendocrine coupling to gain insight into atypical development. Morning levels of cortisol, testosterone, and dehydroepiandrosterone (DHEA) were assessed at ages 11, 13, and 15; ELS was assessed during the infancy and preschool periods. Hierarchical linear modeling revealed that cortisol-DHEA coupling patterns progressed to tight, positive coupling across adolescence. Cortisol-testosterone coupling was positive at age 11 but became more negative at ages 13 and 15. Exposure to ELS resulted in more adultlike neuroendocrine coupling patterns earlier in life than non-exposed youth; however the effect of ELS on cortisol-testosterone coupling was unique to girls. Results illustrate trajectories of neuroendocrine coupling that may be unique to adolescence. Moderation by ELS suggests that early stress exposure may prompt earlier adultlike neuroendocrine coupling, particularly within girls, which may contribute to early pubertal development.


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