The Utility of the Level of Personality Functioning Scale in Maternal Samples: A Brief Report.

Maternal personality plays a role in how a mother parents her children and adolescents. Current trait-based measures of personality are acceptable for use in maternal samples, but the presence or absence of given personality traits might not be enough to describe how personality relates to parenting. The Level of Personality Functioning Scale (LPFS) could serve as a solution, as it was designed to capture level of dysfunction in personality without being reliant on specific personality traits. Research, however, has yet to demonstrate the LPFS as a useful measure of personality in maternal samples, thus the goal of this study. A sample of 123 mothers reported on behavioral problems in their adolescent-aged children and their own personality using both a trait-based measure and the LPFS. Our data showed that maternal reports on the LPFS were associated with maternal perceptions of adolescent behavioral problems, in addition to being an acceptable measure of personality in our maternal sample. We also provide support for incremental validity of the LPFS in our sample, as the LPFS uniquely predicted maternal perceptions of adolescent behavioral problems even after controlling for maternal personality traits. Our results are discussed in light of the limitations of the extant work on maternal personality and add to the literature by demonstrating that the LPFS is an acceptable and ubiquitous measure of personality in maternal samples.

Vocabulary size predicts behavioral problems in emotionally reactive children.

Internalizing and externalizing behavioral problems place children at an increased risk for low academic achievement and socioemotional maladjustment. Children's language skills and level of emotional reactivity have been shown to predict behavioral problems later in development. Yet, there is an absence of research investigating vocabulary by negative emotionality interactions with respect to the development of behavioral problems during early childhood. Our study sought to fill this gap by examining whether the relation between preschool (age 3) vocabulary size and internalizing/externalizing problems during the early school years (age 6) is moderated by preschool negative emotional reactivity, even after controlling for preschool behavioral problems as well as children's socioeconomic background. Longitudinal data was collected from 256 typically developing children (129 girls, 75% White) and their mothers (64% held a college degree). Linear regression analyses revealed moderate rank-order stability in children's internalizing and externalizing problems across this period of development. Evidence of an interaction effect emerged in both the internalizing and externalizing problems regression models. That is, age 3 vocabulary was negatively related to age 6 behavioral problems, but only among children exhibiting higher levels of negative emotional reactivity. Our results indicate that early vocabulary acquisition may serve as a buffer against adverse behavioral outcomes in children with a natural propensity toward expressing negative emotions. These findings point to a more nuanced picture of the relations between language, emotional reactivity, and behavioral problems in childhood, which are discussed in greater detail to inform future intervention and educational research.

From terrible twos to sassy sixes: The development of vocabulary and executive functioning across early childhood.

Across the early childhood period of development, young children exhibit considerable growth in their executive functioning (EF) and vocabulary abilities. Understanding the developmental trajectory of these seemingly interrelated processes is important as both early vocabulary and EF have been shown to predict critical academic and socio-emotional outcomes later in childhood. Although previous research suggests that EF and vocabulary are correlated in early childhood, much of the existing longitudinal research has focused on unidirectional relations among preschool child samples. The current large-scale study, therefore, sought to examine whether children's vocabulary and EF abilities are bidirectionally related over time across four measurement waves in early childhood (i.e., at ages 2, 3, 4, and 6). At each timepoint, children's vocabulary skills were positively correlated with their concurrent EF abilities. After controlling for child sex and maternal education status, the best-fitting, cross-lagged panel model was a unidirectional model whereby children's early vocabulary scores predicted their later EF performance at each timepoint. Although age 2 EF significantly predicted age 3 vocabulary size, this association was no longer significant after accounting for maternal education status. Our results illustrate that vocabulary size plays an important role in predicting children's later EF performance across various timepoints in early childhood, even after controlling for children's initial EF scores. These findings have important implications for intervention research as fostering early vocabulary acquisition may serve as a possible avenue for improving EF outcomes in young children. RESEARCH HIGHLIGHTS: Children's vocabulary size is positively correlated with their concurrent executive functioning skill at ages 2, 3, 4, and 6 Young children's early vocabulary scores predict their later EF performance across measurement waves, even after controlling for initial EF skill There is stability in children's relative vocabulary size and executive functioning performance over time in early childhood.

Developmental patterns of children's shyness: Relations with physiological, emotional, and regulatory responses to being treated unfairly.

The dysregulation of social fear has been widely studied in children's shyness, but we know little about how shy children regulate during unfair treatment. We first characterized developmental patterns of children's shyness (N = 304, ngirls = 153; 74% White, 26% Other) across 2 (Mage = 2.07), 3 (Mage = 3.08), 4 (Mage = 4.08), and 6 (Mage = 6.58) years of age. Data collection occurred from 2007 to 2014. At age 6, the high stable group had higher cardiac vagal withdrawal and lower expressed sadness and approach-related regulatory strategy than the low stable group when being treated unfairly. Although shy children may be more physiologically impacted by being treated unfairly, they may mask their sadness to signal appeasement.

Fearful temperament in middle childhood predicts adolescent attention bias and anxiety symptoms: The moderating role of frontal EEG asymmetry.

The current study provided first analyses of the moderating effect of baseline-to-task frontal EEG asymmetry on the associations between 9-year fearful temperament and adolescent attention bias to threat as well as anxiety symptoms. Participants include a community sample of 122 children (60 boys, 62 girls; Mage = 14.66 years; Range = 11.82-18.13 years). Baseline-to-task frontal EEG asymmetry at age 9 moderated the relation between fearful temperament at age 9 and adolescent anxiety symptoms. Specifically, fearful temperament predicted adolescent anxiety symptoms when children showed greater right activation from baseline to an executive function task, but not greater left activation. Baseline-to-task frontal EEG asymmetry moderated the association between fearful temperament and sustained (i.e., stimulus onset asynchrony is 1250 ms) but not automatic attention bias (i.e., stimulus onset asynchrony is 500 ms). Children with greater left frontal activation from baseline to task more efficiently direct attention away from threat. Adolescent automatic attention bias to threat was related to concurrent anxiety symptoms. These findings illustrate the importance of considering frontal EEG asymmetry to shape how fearful children process threat and to influence their behavioral problems.

Setting the stage: Biopsychosocial predictors of early childhood externalizing behaviors.

Research has indicated that biological (self-regulation), psychological (temperament), and social (maternal parenting behaviors) factors predict childhood externalizing behaviors. Few studies, however, have evaluated psychological, biological, and social factors in conjunction as predictors of childhood externalizing behaviors. Further, limited research has examined whether these biopsychosocial predictors during infancy and toddlerhood predict the onset of externalizing behaviors in early childhood. The present study aimed to examine the longitudinal relations between biopsychosocial predictors of child externalizing behaviors. Children and their mothers (n = 410) participated when children were 5, 24, and 36 months old. Child self-regulation was assessed via baseline respiratory sinus arrhythmia (RSA) at age 5 months, and child psychology was measured via maternal report of effortful control at age 24 months. Additionally, maternal intrusiveness was assessed during a mother-child interaction at age 5 months. At 36 months, mothers reported on child externalizing behaviors. Longitudinal path modeling was used to examine the direct and indirect effects of maternal intrusiveness and child effortful control on child externalizing behavior, as well as whether these effects were conditional upon child baseline RSA. Results showed a significant indirect effect of maternal intrusiveness on externalizing behavior through effortful control, and this pathway was moderated by baseline RSA after controlling for orienting regulation at age 5 months. These results suggest that early childhood externalizing behaviors are jointly affected by biological, psychological, and social factors during toddlerhood.

Expressive language in infancy and toddlerhood: The roles of child temperament and maternal parenting behaviors.

Prompt, appropriate, and contingent maternal behaviors play a role in early language acquisition, as do individual differences in children's temperament. However, little work has investigated the combined influence of maternal psychosocial and child biological factors on expressive language development. The purpose of this study was to evaluate the concurrent and longitudinal contributions of responsive/intrusive parenting and child temperament to multiple expressive language outcomes at 10 and 24 months of age. Participants included 407 mothers and children (209 girls). Mothers completed questionnaires about their infant's temperament and language, and maternal parenting was coded during mother-child interaction tasks. Dependent variables included (1) gestures at 10 months, (2) vocabulary at 24 months, (3) mean length of utterance at 24 months, and (4) sentence complexity at 24 months. After controlling for child sex and maternal education, child temperament was associated with language outcomes at 10 and 24 months, whereas intrusive, but not responsive, parenting related to only 24 month language outcomes. Longitudinally, infant negative affectivity predicted sentence complexity in toddlerhood. These findings elucidate the presence of both psychological and biological predictors as they differentially influence various aspects of expressive language development across the first two postnatal years.

Child emotion inhibition mediates the effect of parent's adaptive cognitive emotion regulation on child frontal EEG asymmetry during reappraisal.

Cognitive reappraisal is considered an adaptive emotion regulation strategy, but little is known regarding children's ability to effectively implement cognitive reappraisal. Some research indicates that parenting contributes to child cognitive reappraisal ability, with parent's own adaptive cognitive emotion regulation strategies playing a role. Minimal research attempts to examine how child and parenting factors work together to affect child cognitive reappraisal. We examined this association through mediation analyses to determine whether child emotion coping and emotion inhibition would mediate the relation between parent's adaptive cognitive emotion regulation and children's cognitive reappraisal implementation. Children were instructed to implement cognitive reappraisal during a sad film, while electroencephalogram (EEG) was collected. Left frontal EEG asymmetry was conceptualized as effective cognitive reappraisal implementation. Our model supported full mediation for child emotion inhibition. Parent's adaptive cognitive emotion regulation was positively associated with children's emotion inhibition, which was then positively linked to children's left frontal EEG asymmetry during cognitive reappraisal. The model with child emotion coping as a mediator was not supported. Our findings highlight the importance of examining multiple pathways that may impact children's adaptive cognitive reappraisal ability.

Examining the bidirectional relationships between maternal intrusiveness and child internalizing symptoms in a community sample: A longitudinal study from infancy to middle childhood.

BACKGROUND: Myriad parenting behaviors have been linked to the development of internalizing disorders in children. Intrusive parenting, characterized by autonomy-limiting behaviors that hold the parent's agenda above that of the child, may uniquely contribute to the development of child internalizing symptoms. The current study investigates bidirectional effects between maternal intrusiveness and internalizing symptomology from infancy to middle childhood. METHODS: Participants were a community sample of 218 infant-mother dyads assessed at 7 time points (5 and 10 months; 2, 3, 4, 6, and 9 years). Maternal intrusiveness was behaviorally coded at all timepoints; mothers completed the CBCL for their child at ages 3, 4, 6, and 9 years. The empirically derived Internalizing subscale was used to assess child internalizing symptoms. RESULTS: About 1/3 to ½ of mothers displayed maternal intrusiveness across infancy and childhood, with the exception of ages 2-3 years, when an increase in the number of mothers displaying intrusiveness was observed. A cross-lagged panel model showed that intrusiveness and internalizing symptoms were concurrently related at 3 years, but this relationship disappeared when we controlled for maternal education. There was no evidence of prospective relationships between our constructs. CONCLUSIONS: Mothers in a community-based sample may increase intrusiveness in the toddler and early preschool years as children strive for more autonomy. Intrusiveness may play more of a maintenance role in child internalizing symptoms, and associations between maternal intrusiveness and child internalizing symptomatology may be weaker than hypothesized, varying by maternal education. Suggestions for assessing intrusive parenting in future studies are discussed.

Temperamental Shyness and Anger/Frustration in Childhood: Normative Development, Individual Differences, and the Impacts of Maternal Intrusiveness and Frontal Electroencephalogram Asymmetry.

This study used latent growth curve modeling to identify normative development and individual differences in the developmental patterns of shyness and anger/frustration across childhood. This study also examined the impacts of maternal intrusiveness and frontal electroencephalogram (EEG) asymmetry at age 4 on the developmental patterns of shyness and anger/frustration. 180 children (92 boys, 88 girls; Mage = 4.07 years at baseline; 75.6% White, 18.3% Black, 6.1% multiracial/other) participated in the study. Normative development included significant linear decreases in shyness and anger/frustration. Individual variation existed in the developmental patterns. Children with left frontal EEG asymmetry showed a faster decreasing pattern of shyness. Children who experienced higher maternal intrusiveness and had left frontal EEG asymmetry showed a slower decreasing pattern of anger/frustration.

Frontal EEG asymmetry moderates the associations between negative temperament and behavioral problems during childhood.

Fearful inhibition and impulsivity-anger significantly predict internalizing and externalizing problems, respectively. An important moderator that may affect these associations is frontal EEG asymmetry (FA). We examined how temperament and FA at 6 years interactively predicted behavioral problems at 9 years. A community sample of 186 children (93 boys, 93 girls) participated in the study. Results indicated that the effect of fearful inhibition on parent-reported internalizing problems increased as children exhibited greater right FA. The effect of impulsivity-anger on parent-reported externalizing problems increased as children showed greater left FA. Because FA was allowed to vary rather than children being dichotomized into membership in left FA and right FA groups, we observed that children's FA contributed to the resilience process only when FA reached specific asymmetry levels. These findings highlight the importance of considering the different functions of FA in combination with specific dimensions of temperament in predicting children's socioemotional outcomes. Clinical implications include providing suggestions for intervention services by demonstrating the role of FA in developing behavioral problems and inspiring research on whether it is possible to alter EEG activation and thus potentially improve developmental outcomes.

Memory binding and theta EEG during middle childhood.

The ability to bind together the contextual details associated with an event undergoes dramatic improvement during childhood. However, few studies have examined the neural correlates of memory binding encoding and retrieval during middle childhood. We examined age-related encoding and retrieval differences using continuous electroencephalogram (EEG) measures in a sample of 6- and 8-year-olds. For the memory binding task, children were tested on memory for individual items (i.e., objects and backgrounds only) and combined object-backgrounds pairings (combination condition). Memory for individual item information was comparable across both age groups. However, younger children experienced greater difficulty (i.e., higher false alarm rate) in the combination condition. Theta (4-7 Hz) neuronal oscillations were analyzed to compare memory encoding and retrieval processes. Widespread retrieval-related increases in theta band EEG power (compared with baseline and encoding-related activation) were evident in both 6- and 8-year-olds. Regression analyses revealed that parietal theta EEG power during retrieval accounted for variability in memory binding performance. These findings suggest that theta rhythms are intricately linked to memory binding processes during middle childhood.

Consistency of EEG asymmetry patterns in infants of depressed mothers.

We evaluated frontal electroencephalogram (EEG) asymmetry across multiple contexts as an index of a general affective response predisposition in 12-month-old infants whose mothers were at elevated risk for perinatal depression due to their mother's history of depression. We further examined mothers' prenatal, postnatal, and concurrent depressive symptom levels in relation to infants' frontal EEG asymmetry consistency. Mothers (n = 132) with a history of depression prior to pregnancy completed depressive symptom scales repeatedly during pregnancy and the first year postpartum. Their 12-month-old infants' frontal EEG asymmetry was recorded across five contexts (baseline/bubbles, peek-a-boo, play, feeding, and distract). Frontal EEG asymmetries showed small to moderate correlations across contexts. Mothers' prenatal depression symptom levels (not postnatal or concurrent) were associated with infants having consistent right, rather than left, frontal EEG asymmetry, even after controlling for infants' observed affect. These findings demonstrate the consistency of EEG asymmetry scores across contexts in 12-month-old infants at risk for the development of psychopathology, providing support for relative right frontal EEG asymmetry as a trait marker of vulnerability to depression. Findings also suggest the importance of mothers' prenatal, rather than postnatal or concurrent depression, in predicting infants' consistent patterns of relative right frontal EEG asymmetry across contexts.

Private Speech and the Development of Self-Regulation: The Importance of Temperamental Anger.

In this study (N=160), we observed children's private (i.e., self-directed) speech (PS) during a challenging puzzle task at age 3 and assessed whether the amount and maturity of their PS predicted their inhibitory control (IC) at age 4 and indirectly emotion regulation at age 9. Additionally, we examined whether the direct and indirect effects of PS were moderated by children's temperament. As expected, the maturity of children's PS was positively associated with IC and this association was stronger when children were reported as higher in anger reactivity by mothers (the interaction accounting for 11% of the explained variance). Children low in temperamental anger tend to have good IC and may not need to use PS. When children were at or above the mean on anger reactivity, PS maturity was indirectly associated with better emotion regulation at age 9 through an influence on IC at age 4 (index of moderated mediation =1.03 [.10, 3.60]). Findings suggest that PS is an important self-regulatory tool for 3-year-olds who typically experience and express anger.

Modeling development of frontal electroencephalogram (EEG) asymmetry: Sex differences and links with temperament.

Asymmetric patterns of frontal brain electrical activity reflect approach and avoidance tendencies, with stability of relative right activation associated with withdrawal emotions/motivation and left hemisphere activation linked with approach and positive affect. However, considerable shifts in approach/avoidance-related lateralization have been reported for children not targeted because of extreme temperament. In this study, dynamic effects of frontal electroencephalogram (EEG) power within and across hemispheres were examined throughout early childhood. Specifically, EEG indicators at 5, 10, 24, 36, 48, and 72 months-of-age (n = 410) were analyzed via a hybrid of difference score and panel design models, with baseline measures and subsequent time-to-time differences modeled as potentially influencing all subsequent amounts of time-to-time change (i.e., predictively saturated). Infant sex was considered as a moderator of dynamic developmental effects, with temperament attributes measured at 5 months examined as predictors of EEG hemisphere development. Overall, change in left and right frontal EEG power predicted declining subsequent change in the same hemisphere, with effects on the opposing neurobehavioral system enhancing later growth. Infant sex moderated the pattern of within and across-hemisphere effects, wherein for girls more prominent left hemisphere influences on the right hemisphere EEG changes were noted and right hemisphere effects were more salient for boys. Largely similar patterns of temperament prediction were observed for the left and the right EEG power changes, with limited sex differences in links between temperament and growth parameters. Results were interpreted in the context of comparable analyses using parietal power values, which provided evidence for unique frontal effects.

Relations between frontal EEG maturation and inhibitory control in preschool in the prediction of children's early academic skills.

Maturation of the prefrontal cortex (PFC) across the first few years of life is thought to underlie the emergence of inhibitory control (IC) abilities, which may play an important role in children's early academic success. In this growth curve modeling study (N = 364), we assessed developmental change in children's resting-state electroencephalogram (EEG) activity (6-9 Hz 'alpha' power) from 10 months to 4 years and examined whether the initial levels or amount of change in frontal alpha power were associated with children's IC at age 4 and indirectly academic skills at age 6. Results indicated that greater increases in frontal alpha power across the study period were associated with better IC, and indirectly with better performance on Woodcock-Johnson tests of reading and math achievement at age 6. Similar associations between change in EEG and age 4 vocabulary were observed but did not mediate an association with academic skills. Similar analyses with posterior alpha power showed no associations with IC. Findings underscore the significance of frontal lobe maturation from infancy to early childhood for children's intellectual development.

Context of Maternal Intrusiveness During Infancy and Associations with Preschool Executive Function.

The relation between maternal behavior and neurocognitive development is complex and may depend on the task context. We examined 5-month-old infant frontal EEG, maternal intrusiveness (MI) evaluated during two play contexts at 5 and 10 months, and a battery of executive function (EF) tasks completed at 48 months to evaluate if MI during infancy and infant neural function interacted to predict later cognition. Infant frontal EEG was a predictor of 4-year EF. MI during structured play at both 5 and 10 months predicted preschool EF, and MI during unstructured did not have a main effect on EF but showed a potential moderating effect of infant EEG on later EF. The pattern changed between ages, with MI during structured play at 5 months showing a positive association with age 4 EF, whereas MI during structured play at 10 months had a negative association with age 4 EF. We demonstrate differences in the context of maternal behavior used to predict childhood EF, highlighting the importance of considering parenting context in EF development.

Parenting and Children's Executive Function Stability Across the Transition to School.

When children transition to school between the ages of 4 and 6 years, they must learn to control their attention and behavior to be successful. Concurrently, executive function (EF) is an important skill undergoing significant development in childhood. To understand changes occurring during this period, we examined the role of parenting in the development of children's EF from 4 to 6 years old. Participants were mother and child dyads (N = 151). Children completed cognitive tasks to assess overall EF at age 4 and age 6. At both time points, mothers and children completed interaction tasks which were videotaped and coded to assess various parenting dimensions. Results indicated that children with high EF at age 4 were more likely to have high EF at age 6. In addition, results suggested that higher levels of positive parenting across the transition to school promote stability of individual differences in EF.

Attention and executive functioning in infancy: Links to childhood executive function and reading achievement.

This study provides the first analyses connecting individual differences in infant attention to reading achievement through the development of executive functioning (EF) in infancy and early childhood. Five-month-old infants observed a video, and peak look duration and shift rate were video coded and assessed. At 10 months, as well as 3, 4, and 6 years, children completed age-appropriate EF tasks (A-not-B task, hand game, forward digit span, backwards digit span, and number Stroop). Children also completed a standardized reading assessment and a measure of verbal intelligence (IQ) at age 6. Path analyses on 157 participants showed that infant attention had a direct statistical predictive effect on EF at 10 months, with EF showing a continuous pattern of development from 10 months to 6 years. EF and verbal IQ at 6 years had a direct effect on reading achievement. Furthermore, EF at all time points mediated the relation between 5-month attention and reading achievement. These findings may inform reading interventions by suggesting earlier intervention time points and specific cognitive processes (i.e. 5-month attention).

Commonality between executive functioning and effortful control related to adjustment.

This study examined the association between executive functioning (EF) and effortful control (EC), and tested whether cognitive control as the commonality of EF and EC, predicted competence and internalizing and externalizing symptomatology in children (N = 218, 6-8 years) and adolescents (N = 157, 13-14 years). Confirmatory factor analyses suggested cognitive control-inhibitory control and attentional control-as a significant overlap between EF and EC. Structural equation modeling analyses indicated that the cognitive control latent factor was associated with competence and internalizing and externalizing symptomatology among children and externalizing symptomatology among adolescents. The results provide evidence that inhibitory control and attentional control are the commonality between EF and EC and highlight that they are linked with positive and negative adjustment outcomes.