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Importance sampling is a popular Monte Carlo method used in a variety of areas in econometrics. When the variance of the importance sampling estimator is infinite, the central limit theorem does not apply and estimates tend to be erratic even when the simulation size is large. The authors consider asymptotic trimming in such a setting. Specifically, the authors propose a bias-corrected tail-trimmed estimator such that it is consistent and has finite variance. The authors show that the proposed estimator is asymptotically normal, and has good finite-sample properties in a Monte Carlo study.

The variance targeting estimator (VTE) for generalized autoregressive conditionally heteroskedastic (GARCH) processes has been proposed as a computationally simpler and misspecification-robust alternative to the quasi-maximum likelihood estimator (QMLE). In this paper we investigate the asymptotic behavior of the VTE when the stationary distribution of the GARCH process has infinite fourth moment. Existing studies of historical asset returns indicate that this may be a case of empirical relevance. Under suitable technical conditions, we establish a stable limit theory for the VTE, with the rate of convergence determined by the tails of the stationary distribution. This rate is slower than that achieved by the QMLE. The limit distribution of the VTE is nondegenerate but singular. We investigate the use of subsampling techniques for inference, but find that finite sample performance is poor in empirically relevant scenarios.

As numerous scholars have noted, the law takes a strikingly incoherent approach to adolescent reproduction. States overwhelmingly allow a teenage girl to independently consent to pregnancy care and medical treatment for her child, and even to give up her child for adoption, all without notice to her parents, but require parental notice or consent for abortion. This chapter argues that this oft-noted contradiction in the law on teenage reproductive decision-making is in fact not as contradictory as it first appears. A closer look at the law’s apparently conflicting approaches to teenage abortion and teenage childbirth exposes common ground that scholars have overlooked. The chapter compares the full spectrum of minors’ reproductive rights and unmasks deep similarities in the law on adolescent reproduction – in particular an undercurrent of desire to punish (female) teenage sexuality, whether pregnant girls choose abortion or childbirth. It demonstrates that in practice, the law undermines adolescents’ reproductive rights, whichever path of pregnancy resolution they choose. At the same time that the law thwarts adolescents’ access to abortion care, it also fails to protect adolescents’ rights as parents. The analysis shows that these two superficially conflicting sets of rules in fact work in tandem to enforce a traditional gender script – that self-sacrificing mothers should give birth and give up their infants to better circumstances, no matter the emotional costs to themselves. This chapter also suggests novel policy solutions to the difficulties posed by adolescent reproduction by urging reforms that look to third parties other than parents or the State to better support adolescent decision-making relating to pregnancy and parenting.

On the occasion of the publication of the 20th volume of the Advances in Gender Research series, this chapter reviews the series goals and previous volumes and introduces the themes and chapters of the current one.

The chapter shows both continuity and change in approaches to theories, research methods, pedagogy, and praxis in gender studies.

Newer approaches, gender-centered, intersectional and global, offer a critique of older ways of gathering and understanding data, ways that respond to and are impacted by social change.

The chapter and the volume are intended to encourage further advances in gender research.

This chapter develops a predictive approach to Granger causality (GC) testing that utilizes k -fold cross-validation and posterior simulation to perform out-of-sample testing. A Monte Carlo study indicates that the cross-validation predictive procedure has improved power in comparison to previously available out-of-sample testing procedures, matching the performance of the in-sample F-test while retaining the credibility of post- sample inference. An empirical application to the Phillips curve is provided evaluating the evidence on GC between inflation and unemployment rates.

The COVID-19 pandemic imposed significant and abrupt lifestyle changes on the pediatric population. Major lifestyle changes that occur during children’s and adolescents’ vital developmental years have the potential to introduce stressors, which have both immediate and long-term effects on physical and mental health. The aspects of the COVID-19 pandemic that impacted pediatric mental health included school closures, quarantine, increases in screen time, changes to Labor & Delivery unit COVID-19 policies, and changes to the delivery of clinical mental health care, including telehealth. In addition, pediatric mental health was deeply impacted by the ongoing challenges to health equity associated with health disparities and racism as a health crisis. Pediatric mental health declined since the start of the pandemic, school closures and quarantine affected rates of food insecurity and physical activity levels, and the COVID-19 pandemic exacerbated pre-existing health disparities and mental health conditions among the pediatric population. Recommendations for building more resilient public health systems are explored.

Scanning both the academic and popular business literature of the last 40 years puzzles the alert reader. The variety of prescriptions of how to be successful (effective, performing, etc.) 1 Organizational performance, organizational success and organizational effectiveness will be used interchangeably throughout this paper.1 in business is hardly comprehensible: “Being close to the customer,” Total Quality Management, corporate social responsibility, shareholder value maximization, efficient consumer response, management reward systems or employee involvement programs are but a few of the slogans introduced as means to increase organizational effectiveness. Management scholars have made little effort to integrate the various performance-enhancing strategies or to assess them in an orderly manner.

This study classifies organizational strategies by the importance each strategy attaches to different constituencies in the firm’s environment. A number of researchers divide an organization’s environment into various constituency groups and argue that these groups constitute – as providers and recipients of resources – the basis for organizational survival and well-being. Some theoretical schools argue for the foremost importance of responsiveness to certain constituencies while stakeholder theory calls for a – situation-contingent – balance in these responsiveness levels. Given that maximum responsiveness levels to different groups may be limited by an organization’s resource endowment or even counterbalanced, the need exists for a concurrent assessment of these competing claims by jointly evaluating the effect of the respective behaviors towards constituencies on performance. Thus, this study investigates the competing merits of implementing alternative business philosophies (e.g. balanced versus focused responsiveness to constituencies). Such a concurrent assessment provides a “critical test” of multiple, opposing theories rather than testing the merits of one theory (Carlsmith, Ellsworth & Aronson, 1976).

In the high tolerance level applied for this study (be among the top 80% of the industry) only a handful of organizations managed to sustain such a balanced strategy over the whole observation period. Continuously monitoring stakeholder demands and crafting suitable responsiveness strategies must therefore be a focus of successful business strategies. While such behavior may not be a sufficient explanation for organizational success, it certainly is a necessary one.