Convergence of the moment generating function of standardized quantiles

A sequence of independent, identically distributed random variables is considered. Given a simple local condition on the distribution of these random variables, we give necessary and sufficient conditions on the tails of the distribution for the moment generating function of a standardized quantile of the first n observations to converge to the moment generating function of an appropriate normal distribution as n →infinity;. This result is actually a special case of a more general result which can also be used to show convergence in distribution and convergence of moments of standardized quantiles.     

Sequential analysis of 3m supersaturated factorial experiments

In this paper, designs that allow for the estimation of all main effects, and the detection and estimation of significant interactions in fewer runs than used in traditional approaches are examined. Specifically, a method for sequentially analyzing data from 3m fractional factorial experiments is presented. The procedure is illustrated through two examples.     

“Taking Mama Steps” Toward Authority,Alternatives, and Advocacy

Ten years ago, the task of blending work and motherhood was arduous, lonely, and painstaking. Most settled for face-to-face interactions or phone calls to friends and family for support. Sadly, frustrated conversations are still happening due to a lack of cultural acceptance, policies, and laws focused on blending work and family life. However, some women are turning to online spaces for social support. In 1991, Donna Haraway posited that online, affinity-based groups contain the potential for activism. Buoyed by digital social media possibilities for social support, we assessed feminist activism within a motherhood support group populated by women from various countries around the world. We found that consciousness-raising can further feminist activism within an online motherhood Facebook group by helping others learn to negotiate their choices, but economic stratification and educational divides still constrain social support; this suggests that digital connections influence affinity-based identities and feminist activism.     

Author disincentives and open access

Abstract

All parties in the scholarly-information marketplace agree that any Open Access (OA) system will have to account for the costs of disseminating scholarly information and of editing, publishing and distributing it. There has been less discussion of the fact that for an OA forum to succeed, it will have to be accepted and supported by authors. Author charges, a relative lack of prestige, and the required abdication of copyright are three characteristics of many currently emerging OA models that may pose significant barriers to author acceptance. These will have to be addressed if OA providers wish to be competitive with non-OA providers.     

YOUTH DEPRESSION AND FUTURE CRIMINAL BEHAVIOR

While the contemporaneous association between mental health problems and criminal behavior has been explored in the literature, the long‐term consequences of such problems, depression in particular, have received much less attention. Using data from the National Longitudinal Study of Adolescent Health (Add Health), we examine the effect of depression during adolescence on the probability of engaging in a number of criminal behaviors later in life. In our analysis, we control for a rich set of individual‐, family‐, and neighborhood‐level factors to account for conditions that may be correlated with both childhood depression and adult criminality. One novelty in our approach is the estimation of school and sibling fixed effects models to account for unobserved heterogeneity at the neighborhood and family levels. Furthermore, we exploit the longitudinal nature of our data set to account for baseline differences in criminal behavior. The empirical estimates show that adolescents who suffer from depression face a substantially increased probability of engaging in property crime. We find little evidence that adolescent depression predicts the likelihood of engaging in violent crime or the selling of illicit drugs. Our estimates imply that the lower‐bound economic cost of property crime associated with adolescent depression is approximately 227 million dollars per year. (JEL I10, K42)     

Temporal Ordering of Intimate Relationship Efficacy and Conflict

Drawing from social cognitive theory (Bandura, 1986) and data from 1,640 couples who remained together over the first 4 waves of the German Panel Analysis of Intimate Relationships and Family Dynamics (Pairfam) project, the authors examined the temporal ordering between each partner's relationship efficacy and conflict (constructive behaviors and frequency of negative exchanges) assessed at the dyadic and individual levels. The results revealed that each partner's constructive conflict behaviors and negatively valenced conflict frequency at the couple level temporally preceded relationship efficacy for male and female partners. There was no support for the reverse order or bidirectional linkages over time. These results challenge the prevailing theoretical and empirical suppositions regarding associations between relationship efficacy and couple interactions. The discussion theorizes a more complex efficacy process in couple relations, whereas specific efficacy beliefs shape behaviors in that domain, which subsequently inform each partner's global relationship efficacy over time.