Correction: Using machine learning to understand age and gender classification based on infant temperament.

[This corrects the article DOI: 10.1371/journal.pone.

Infant gut microbiota and negative and fear reactivity.

Background: Studies indicate that gut microbiota is related to neurodevelopmental and behavioral outcomes. Accordingly, early gut microbiota composition (GMC) has been linked to child temperament, but research is still scarce. The aim of this study was to examine how early GMC at 2.

Neurocognitive Outcomes in Deformational Plagiocephaly: Is There an Association between Morphologic Severity and Results?

Background: The neurodevelopmental effects of skull asymmetry and orthotic helmet therapy for deformational plagiocephaly (DP) have had limited investigation. This study assessed the long-term neurocognitive outcomes in patients with DP and their association with orthotic helmet therapy and head shape abnormality.

Methods: A total of 138 school-age children with a history of DP, 108 of whom received helmet therapy, were tested with a neurocognitive battery assessing academic achievement, intelligence quotient, and visual-motor function.

Context Matters: Preliminary Evidence That the Association between Positive Affect and Adiposity in Infancy Varies in Social vs. Non-Social Situations.

Previous studies have suggested that infants high in negative affect have higher levels of adiposity, arising in part via changes in nutrition (e.g., “feeding to soothe”).

Prolonged Infant Crying: Caregiving Quality and Child Physical Abuse Risk.

Research suggests that prolonged infant crying may increase risk for child physical abuse (CPA). However, few studies have examined behavioral responses to infant crying among parents at risk for CPA. The present study sought to fill this gap by using a simulated infant to examine how mothers and fathers with varying degrees of CPA risk respond to prolonged infant crying.

Associations between local COVID-19 case rates, pandemic-related financial stress and parent and child functioning.

The COVID-19 global crisis led to unprecedented disruption of family routines and heightened family stress. This study examines the effects of local COVID-19 case rates and pandemic-related financial stress on family processes (e.g.

Using machine learning to understand age and gender classification based on infant temperament.

Age and gender differences are prominent in the temperament literature, with the former particularly salient in infancy and the latter noted as early as the first year of life. This study represents a meta-analysis utilizing Infant Behavior Questionnaire-Revised (IBQ-R) data collected across multiple laboratories (N = 4438) to overcome limitations of smaller samples in elucidating links among temperament, age, and gender in early childhood. Algorithmic modeling techniques were leveraged to discern the extent to which the 14 IBQ-R subscale scores accurately classified participating children as boys (n = 2,298) and girls (n = 2,093), and into three age groups: youngest (< 24 weeks; n = 1,102), mid-range (24 to 48 weeks; n = 2,557), and oldest (> 48 weeks; n = 779).

Neonatal amygdala volumes and the development of self-regulation from early infancy to toddlerhood.

At the broadest level, self-regulation (SR) refers to a range of separate, but interrelated, processes (e.g., working memory, inhibition, and emotion regulation) central for the regulation of cognition, emotion, and behavior that contribute to a plethora of health and mental health outcomes.

Long-Term Neurocognitive Outcomes in Sagittal Synostosis: The Impact of Reoperation.

Introduction: Optimal age at surgery in nonsyndromic sagittal craniosynostosis continues to be debated. Previous reports suggest that earlier age at whole vault cranioplasty more frequently requires reoperation. It is unknown, however, whether reoperation affects neurocognitive outcome.

Trajectories of maternal pre- and postnatal anxiety and depressive symptoms and infant fear: Moderation by infant sex.

Background: Prior work has examined the links between pre- and postnatal maternal distress and infant negative affectivity; however, there is little understanding about how the continuity of infant exposure to pre- and postnatal maternal distress relates to infant development. This study investigated the continuity of maternal pre- and postnatal depressive and anxiety symptoms and their relations with infant fear among 391 mother-infant dyads. An additional aim was to consider infant sex as a moderating factor.

Toddlers' impulsivity, inhibitory control, and maternal eating-related supervision in relation to toddler body mass index: Direct and interactive effects.

Previous studies have noted that child temperament characteristics, such as aspects of self-regulation, as well as parental feeding practices contribute to children's body mass index (BMI), and have implications for identifying children who may be at risk of being overweight or obese. While studies have considered children's temperament or maternal feeding practices separately, few have considered these correlates of children's BMI jointly or in interaction in relation to children's BMI. The current study included 179 mother-child dyads participating in a longitudinal study.

Perceived Executive Functioning in Parents at Risk for Child Physical Abuse.

Research suggests that deficits in executive functioning are associated with negative parenting behaviors. However, limited research has examined the link between executive functioning and risk for child physical abuse (CPA) perpetration. Early studies examining executive functioning in parents at risk for perpetrating CPA relied on performance-based measures, which are designed to occur under carefully controlled conditions and may not capture difficulties experienced under less optimal conditions (e.

Editorial: Out of Control: More Evidence That Both Family Ecology and Genetic Influences Contribute to the Origins of Poor Self-Control Among Adolescents.

Poor self-control, and poor self-regulation more broadly, plays a notable role in myriad outcomes of concern to our field and to society. Poor self-control has been implicated in criminality, academic difficulties, occupational challenges, problematic interpersonal relationships, lower income, and financial problems, and has been identified as a transdiagnostic risk factor for psychiatric difficulties across the life span. Poor self-control also has been associated with health outcomes such as elevated risk for obesity.

Cross-Cultural Differences in Temperament: Comparing Paternal ratings of US and Dutch infants.

This study conducted longitudinal comparisons of US and Dutch paternal ratings of temperament, measured via the Infant Behaviour Questionnaire-Revised, at 4 months (US = 99; Dutch 127) and 12 months (US = 66; Dutch 112) of age. US fathers rated their infant higher in the broad temperament trait Surgency, and its subscales vocal reactivity, high-intensity pleasure, and activity level. US fathers also rated their infants higher in Negative Emotionality, and its subscales of sadness, distress to limitations, and fear.

Maternal positive responses to a distressed infant simulator predict subsequent negative affect in infants.

Existing evidence indicates that maternal responses to infant distress, specifically more sensitive and less inconsistent/rejecting responses, are associated with lower infant negative affect (NA). However, due to ethical and methodological constraints, most existing studies do not employ methods that guarantee each mother will be observed responding to infant distress. To address such limitations, in the current study, a distressed infant simulator (SIM), programmed to be inconsolable, was employed to ensure that mothers (N = 150; 4 months postpartum) were observed responding to infant distress.

Contributions of mothers' and fathers' parenting to children's self-regulation: Evidence from an adoption study.

The origins of top-down self-regulation are attributed to genetic and socialization factors as evidenced by high heritability estimates from twin studies and the influential role of parenting. However, recent evidence suggests that parenting behavior itself is affected by parents' own top-down self-regulation. Because children's top-down self-regulation is influenced by genetic factors and parenting is influenced by top-down self-regulation, the effects of parenting on children's top-down self-regulation identified in prior studies may partially reflect passive gene-environment correlation.

Executive Functioning Predicts Reflective Functioning in Mothers.

Parental reflective functioning (PRF) describes a parent's capacity for considering both their own their child's thoughts, feelings, and behaviors, which can help parents to guide interactions with children. Given the cognitive demands of keeping infants in mind whilst caregiving, we examined the association between aspects of executive function (i.e.

Negative (but not Positive) Parenting Interacts with Infant Negative Affect to Predict Infant Approach: Evidence of Diathesis-Stress.

Temperament by parenting interactions may reflect that individuals with greater risk are more likely to experience negative outcomes in adverse contexts (diathesis-stress) or that these individuals are more susceptible to contextual influences in a 'for better or for worse' pattern (differential susceptibility). Although such interactions have been identified for a variety of child outcomes, prior research has not examined approach characteristics - excitement and approach toward pleasurable activities - in the first year of life. Therefore, the current study investigated whether 6-month maternal reported infant negative affect - a phenotypic marker of risk/susceptibility - interacted with 8-month observed parenting behaviors (positive parenting, negative parenting) to predict 12-month infant behavioral approach.

Do emotion regulation difficulties explain the association between executive functions and child physical abuse risk?

This study examined the associations between executive functioning problems, emotion regulation difficulties, and risk for perpetrating child physical abuse (CPA). It was hypothesized that: (a) poor executive functions (i.e.

Maternal Emotion Regulation Strategies, Internalizing Problems and Infant Negative Affect.

Recent work has identified links between mothers' self-regulation and emotion regulation (ER) and children's social-emotional outcomes. However, associations between maternal ER strategies (e.g.

Latent profile and cluster analysis of infant temperament: Comparisons across person-centered approaches.

There is renewed interest in person-centered approaches to understanding the structure of temperament. However, questions concerning temperament types are not frequently framed in a developmental context, especially during infancy. In addition, the most common person-centered techniques, cluster analysis (CA) and latent profile analysis (LPA), have not been compared with respect to derived temperament types.

Heart rate variability indices as bio-markers of top-down self-regulatory mechanisms: A meta-analytic review.

Theoretical perspectives posit that heart-rate variability (HRV) reflects self-regulatory capacity and therefore can be employed as a bio-marker of top-down self-regulation (the ability to regulate behavioral, cognitive, and emotional processes). However, existing findings of relations between self-regulation and HRV indices are mixed. To clarify the nature of such relations, we conducted a meta-analysis of 123 studies (N=14,347) reporting relations between HRV indices and aspects of top-down self-regulation (e.