Child care availability and first-birth timing in Norway

Both sociological and economic theories posit that widely available, high-quality, and affordable child care should have pronatalist effects. Yet to date, the empirical evidence has not consistently supported this hypothesis. We argue that this previous empirical work has been plagued by the inability to control for endogenous placement of day care centers and the possibility that people migrate to take advantage of the availability of child care facilities. Using Norwegian register data and a statistically defensible fixed-effects model, we find strong positive effects of day care availability on the transition to motherhood.     

The failure of the “localisationist project” in mental medicine in nineteenth century France and the emergence of the neurological clinic

During the nineteenth century, neuroanatomical knowledge and the clinical practice of treating mental illnesses develop at the same time. Some practitioners of mental medicine try to combine the clinical practice of treating mental diseases with neuroanatomical knowledge using the idea of cerebral localisations. This point of view is advocated by Gall and the field of phrenology. But there is no obvious success of such a “localisationist project” before Broca and Wernicke’s works on aphasia. This discovery will provoke a revival of the desire to localise the cerebral zones involved in mental diseases. However, the cerebral localisation project progressively decreases during the end of the nineteenth century while neurological clinical practice emerges. Moreover, neurological clinical practice aims to localise anatomical lesions through clinical examination. From a philosophy of science point of view, this segment of history brings into question the relation between a scientific object (the cerebral localisation of zones involved in diseases) and a scientific subject (psychiatry and neurology). It stresses how a scientific project can migrate from one subject to another.     

Does the Brain’s Reward Response Occur Even Without Actual Reward? A Response to Fielding et al. (2017)

A recent paper by Fielding et al. (J Gamb Stud, 2017) argued that the brain’s reward response could occur without the presentation of actual reward. We suggest that since (a) the event-related potentials reported in this paper are atypical of the previous literature, and, (b) a simpler account of the data in terms of sensitivity to outcome frequency cannot be ruled out, the extent to which the brain’s reward response can occur without the presentation of actual reward should remain an open question.     

Household Income and Trajectories of Marital Satisfaction in Early Marriage

Are the marriages of lower income couples less satisfying than the marriages of more affluent couples? To address this question, we compared trajectories of marital satisfaction among couples with a wide range of household incomes. The marital satisfaction of 862 Black, White, and Latino newlywed spouses (N = 431 couples) was assessed five times, each 9 months apart, during the first 4 years of marriage. Lower income couples did not have less satisfying marriages on average, nor did their satisfaction decline more steeply on average. They did, however, experience (a) significantly greater fluctuations in marital satisfaction across assessments and (b) significantly more variability between husbands and wives. If efforts to support the marriages of low‐income couples are to address the unique characteristics of their marital development, these findings suggest that efforts to stabilize their marriages may be more effective than efforts to improve their satisfaction alone.     

FORWARD GUIDANCE AND THE STATE OF THE ECONOMY

This paper analyzes forward guidance in a nonlinear model with a zero lower bound (ZLB) on the nominal interest rate. Forward guidance is modeled with news shocks to the monetary policy rule, which capture innovations in expectations from central bank communication about future policy rates. Whereas most studies use quasi‐linear models that disregard the expectational effects of hitting the ZLB, we show how the effectiveness of forward guidance nonlinearly depends on the state of the economy, the speed of the recovery, the degree of uncertainty, the policy shock size, and the forward guidance horizon when households account for the ZLB. (JEL E43, E58, E61)     

Self-healing umbrella sampling: convergence and efficiency

The Self-Healing Umbrella Sampling (SHUS) algorithm is an adaptive biasing algorithm which has been proposed in Marsili et al. (J Phys Chem B 110(29):14011–14013, 2006) in order to efficiently sample a multimodal probability measure. We show that this method can be seen as a variant of the well-known Wang–Landau algorithm Wang and Landau (Phys Rev E 64:056101, 2001a; Phys Rev Lett 86(10):2050–2053, 2001b). Adapting results on the convergence of the Wang-Landau algorithm obtained in Fort et al. (Math Comput 84(295):2297–2327, 2014a), we prove the convergence of the SHUS algorithm. We also compare the two methods in terms of efficiency. We finally propose a modification of the SHUS algorithm in order to increase its efficiency, and exhibit some similarities of SHUS with the well-tempered metadynamics method Barducci et al. (Phys Rev Lett 100:020,603, 2008).     

Is Stepfamily Status Associated With Cohabiting and Married Women’s Fertility Behaviors?

Children from prior relationships potentially complicate fertility decision-making in new cohabitations and marriages. On the one hand, the “value of children” perspective suggests that unions with and without stepchildren have similar—and deliberate—reasons for shared childbearing. On the other hand, multipartnered fertility (MPF) research suggests that childbearing across partnerships is often unintended. Using the 2006–2010 National Survey of Family Growth and event-history models, I examine the role of stepfamily status on cohabiting and married women’s fertility and birth intendedness, with attention to union type and stepfamily configuration. Adjusting for covariates, women in stepfamily unions are more likely to have a first shared birth in a union than women in unions in which neither partner has children from past relationships, but stepfamily births are less likely to be intended than unintended. Further, this association varies by union type: married women have similar birth risks across stepfamily status, but births are less likely to be intended in marital stepfamilies. For cohabitors, women in a stepfamily are more likely to have a birth than women in nonstepfamily unions, with no differences in intendedness. Configuration (whose children and how many) also matters; for instance, women with one child from a past relationship are more likely to have a birth and to have an intended than unintended birth than women with other stepfamily configurations. It appears that children from either partner’s prior relationships influences subsequent fertility decision-making, undermining the utility of the “value of children” perspective for explaining childbearing behaviors in complex families.