Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 84
Filtrar
1.
Artigo em Inglês | MEDLINE | ID: mdl-38183461

RESUMO

Self-regulation (SR) difficulties are implicated in a wide range of disorders which develop in childhood, including attention deficit hyperactivity disorder (ADHD), oppositional defiance disorder (ODD), anxiety and depression. However, the integration of the existing research evidence is challenging because of varying terminology and the wide range of tasks used, as well as the heterogeneity and comorbidity within and across diagnostic categories. The current study used the Research Domain Criteria (RDoC) framework to guide the examination of different SR processes in young children showing a wide range of symptomatology. Children (aged 4-8) referred by teachers for moderate-to-high conduct, hyperactivity and/or emotional problems at school (assessed using the Strengths and Difficulties Questionnaire (SDQ) subscales; n = 212), and children in SDQ typical ranges (n = 30) completed computerised cognitive control and decision-making tasks. Parents completed questionnaires to assess ADHD, ODD, anxiety and depression symptoms (n = 191). Compared to children with no teacher-reported difficulties, those with moderate-to-high problems showed poorer visuomotor control and decision-making. A factor analysis revealed that task variables adhered to RDoC dimensions and predicted variance in specific disorders: difficulties in cognitive control predicted ADHD symptoms, low reward-seeking was associated with depression and high reward-seeking was associated with ODD. This study highlights how the assessment of cognitive processes positioned within the RDoC framework can inform our understanding of disorder-specific and transdiagnostic difficulties in SR which are associated with diverse clinical symptoms in children.

2.
Annu Rev Psychol ; 73: 353-377, 2022 01 04.
Artigo em Inglês | MEDLINE | ID: mdl-34587779

RESUMO

Early-onset disruptive, aggressive, and antisocial behavior is persistent, can become increasingly serious as children grow older, and is difficult to change. In 2007, our group proposed a theoretical model highlighting the interplay between neurobiological deficits and cognitive and emotional functioning as mediators of the link between genetic influences and early social adversity, on the one hand, and antisocial behavioral problems in childhood, on the other. In this article, we review the post-2007 evidence relevant to this model. We discuss research on genetics/epigenetics, stress/arousal regulation, and emotion and executive functioning in support of the argument that antisocial children, especially those who persist in engaging in antisocial behavior as they grow older, have a range of neuropsychological characteristics that are important in explaining individual differences in the severity and persistence of antisocial behavior. Current clinical practice tends not to acknowledge these individual neuropsychological risk factors or to target them for intervention. We argue that aggressive and disruptive behavior in childhood should be regarded as a neurodevelopmental problem and that intervening at the level of mediating neuropsychological processes represents a promising way forward in tackling these serious behavioral problems.


Assuntos
Agressão , Transtorno da Personalidade Antissocial , Agressão/fisiologia , Transtorno da Personalidade Antissocial/genética , Transtorno da Personalidade Antissocial/psicologia , Criança , Emoções , Função Executiva , Humanos
3.
Eur Child Adolesc Psychiatry ; 32(10): 2077-2088, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35861892

RESUMO

Many children with anxiety disorders exhibit significant and persistent impairments in their social and interpersonal functioning. Two components essential for successful social interaction are empathy and theory of mind (ToM). Both constructs develop rapidly in childhood, but no study has simultaneously examined these skills in young children with emerging mental health problems, including those with symptoms of anxiety. This study investigated empathy and ToM in children with anxiety symptomatology and examined their relationship with anxiety severity. A cross-sectional study was carried out with 174 children aged 4-8 years with emerging mental health difficulties who were referred by school teachers for an assessment because of emotional, cognitive, or behavioural problems at school. Participants completed empathy and ToM tasks. Parents were interviewed and rated children's emotional and behavioural problems. Correlational analyses indicated that elevated anxiety was associated with better cognitive ToM and worse affective empathy; there were no associations between anxiety and either cognitive empathy or affective ToM. Subsequent regression analyses demonstrated that whilst enhanced cognitive ToM was explained by age and verbal IQ, anxiety symptoms uniquely predicted impaired affective empathy. These results indicate that children with symptoms of anxiety have difficulty in sharing in other people's emotions. As a result, they may find it difficult to behave in socially adequate ways in interactions with others that involve affective sharing. These findings encourage the use of early and targeted interventions that improve affective empathy development in children with anxiety symptoms.


Assuntos
Emoções , Empatia , Humanos , Criança , Pré-Escolar , Estudos Transversais , Testes Neuropsicológicos , Ansiedade , Transtornos de Ansiedade , Cognição
4.
Eur Child Adolesc Psychiatry ; 32(1): 87-99, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34228226

RESUMO

Children adopted from public care are more likely to experience emotional and behavioural problems. We investigated two aspects of emotion recognition that may be associated with these outcomes, including discrimination accuracy of emotions and response bias, in a mixed-method, multi-informant study of 4-to-8-year old children adopted from local authority care in the UK (N = 42). We compared adopted children's emotion recognition performance to that of a comparison group of children living with their birth families, who were matched by age, sex, and teacher-rated total difficulties on the Strengths and Difficulties Questionnaire (SDQ, N = 42). We also examined relationships between adopted children's emotion recognition skills and their pre-adoptive histories of early adversity (indexed by cumulative adverse childhood experiences), their parent- and teacher-rated emotional and behavioural problems, and their parents' coded warmth during a Five Minute Speech Sample. Adopted children showed significantly worse facial emotion discrimination accuracy of sad and angry faces than non-adopted children. Adopted children's discrimination accuracy of scared and neutral faces was negatively associated with parent-reported behavioural problems, and discrimination accuracy of angry and scared faces was associated with parent- and teacher-reported emotional problems. Contrary to expectations, children who experienced more recorded pre-adoptive early adversity were more accurate in identifying negative emotions. Warm adoptive parenting was associated with fewer behavioural problems, and a lower tendency for children to incorrectly identify faces as angry. Study limitations and implications for intervention strategies to support adopted children's emotion recognition and psychological adjustment are discussed.


Assuntos
Criança Adotada , Reconhecimento Facial , Criança , Humanos , Pré-Escolar , Criança Adotada/psicologia , Reconhecimento Facial/fisiologia , Emoções , Pais , Adoção
5.
Dev Psychopathol ; 34(1): 85-93, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-33432899

RESUMO

An impairment in recognizing distress is implicated in the development and severity of antisocial behavior. It has been hypothesized that a lack of attention to the eyes plays a role, but supporting evidence is limited. We developed a computerized training to improve emotion recognition in children and examined the role of eye gaze before and after training. Children referred into an intervention program to prevent antisocial outcomes completed an emotion recognition task with concurrent eye tracking. Those with emotion recognition impairments (n = 54, mean age: 8.72 years, 78% male) completed the training, while others (n = 38, mean age: 8.95 years, 84% male) continued with their usual interventions. Emotion recognition and eye gaze were reassessed in all children 8 weeks later. Impaired negative emotion recognition was significantly related to severity of behavioral problems at pretest. Children who completed the training significantly improved in emotion recognition; eye gaze did not contribute to impairment or improvement in emotion recognition. This study confirms the role of emotion recognition in severity of disruptive behavior and shows that a targeted intervention can quickly improve emotion impairments. The training works by improving children's ability to appraise emotional stimuli rather than by influencing their visual attention.


Assuntos
Reconhecimento Facial , Comportamento Problema , Transtorno da Personalidade Antissocial , Criança , Emoções , Expressão Facial , Feminino , Fixação Ocular , Humanos , Masculino
6.
Dev Psychopathol ; 34(3): 936-945, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-33926601

RESUMO

Impaired facial emotion recognition is a transdiagnostic risk factor for a range of psychiatric disorders. Childhood behavioral difficulties and parental emotional environment have been independently associated with impaired emotion recognition; however, no study has examined the contribution of these factors in conjunction. We measured recognition of negative (sad, fear, anger), neutral, and happy facial expressions in 135 children aged 5-7 years referred by their teachers for behavioral problems. Parental emotional environment was assessed for parental expressed emotion (EE) - characterized by negative comments, reduced positive comments, low warmth, and negativity towards their child - using the 5-minute speech sample. Child behavioral problems were measured using the teacher-informant Strengths and Difficulties Questionnaire (SDQ). Child behavioral problems and parental EE were independently associated with impaired recognition of negative facial expressions specifically. An interactive effect revealed that the combination of both factors was associated with the greatest risk for impaired recognition of negative faces, and in particular sad facial expressions. No relationships emerged for the identification of happy facial expressions. This study furthers our understanding of multidimensional processes associated with the development of facial emotion recognition and supports the importance of early interventions that target this domain.


Assuntos
Reconhecimento Facial , Comportamento Problema , Criança , Emoções , Expressão Facial , Humanos , Pais , Reconhecimento Psicológico
7.
Artigo em Inglês | MEDLINE | ID: mdl-36163417

RESUMO

Peer problems are frequently associated with difficulties in recognizing and appraising the emotions of others. It has been argued that facial responsiveness to others' emotions-or motor empathy-is a precursor of emotion processing and affective empathy. Although mimicry impairments have been observed in studies of young people with conduct problems, to our knowledge no study has examined facial responsiveness to others' expressions in young children and examined how this relates to peer relationship problems. Four- to 7-year-old children (n = 91) with or without teacher-reported peer relationship problems (Strength and Difficulties Questionnaire) viewed three dynamic film clips depicting a sad, happy, or scared child, while their spontaneous facial emotional responses were assessed using iMotions software that codes the movement of facial muscles. Children displayed facial expressivity that was congruent with the emotional expressions in the clips. Groups with and without peer problems did not differ in their responses to seeing a happy child. However, children with peer problems exhibited reduced or atypical facial emotional responses to the negative emotional clips. Decreased or atypical facial expressivity to negative emotions was also associated with severity of peer problems; atypical facial responsivity to sadness and reduced facial responsivity to fear predicted peer problems independently of one another. We conclude that reduced or atypical facial expressiveness in response to other children's dynamic facial expressions is associated with problematic peer relations in young children. The implications for early identification and interventions to support prosocial development are discussed.

8.
Eur Child Adolesc Psychiatry ; 30(11): 1769-1777, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32997168

RESUMO

Impaired emotion recognition is a transdiagnostic risk factor for a range of psychiatric disorders. It has been argued that improving emotion recognition may lead to improvements in behaviour and mental health, but supportive evidence is limited. We assessed emotion recognition and mental health following a brief and targeted computerised emotion recognition training in children referred into an intervention program because of severe family adversity and behavioural problems (n = 62; aged 7-10). While all children continued to receive their usual interventions, only children impaired in emotion recognition (n = 40) received the emotion training. Teachers blind to whether or not children had received the training rated children's mental health problems before and 6 months after the training. Participants who received the emotion training significantly improved their recognition of negative and neutral facial expressions. Although both groups showed improved behaviour at follow-up, the reduction in behavioural problems was only significant in children who received the emotion training. Post-training emotion recognition scores predicted mental health problems 6 months later independently of initial emotion recognition ability and severity of behavioural problems. The results are consistent with the view that targeting emotion recognition can improve longer term functioning in individuals with disruptive behaviour, although further research using fully randomised designs is needed before causal conclusions can be drawn with confidence.


Assuntos
Emoções , Comportamento Problema , Reconhecimento Psicológico , Criança , Expressão Facial , Humanos , Saúde Mental , Comportamento Problema/psicologia
9.
Dev Psychobiol ; 62(6): 871-881, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-31998974

RESUMO

Impaired empathy has been associated with aggression in children, adolescents and adults, but results have been contradictory for the preschool period. Impaired inhibitory control also increases the risk of aggression, and possibly moderates empathy-aggression associations. The current study investigated whether empathy and inhibitory control are associated with aggression in toddlerhood. Furthermore, we aimed to clarify the role of inhibitory control in empathy and aggression, specifically, whether inhibitory control moderates the association between empathy and aggression. During a laboratory visit at age 30 months (N = 103), maternal reports of physical aggression were obtained and child inhibitory control was examined using a gift delay task. Empathy was examined by obtaining behavioral observations and recording physiological responses (heart rate response and respiratory sinus arrhythmia response) to an empathy-eliciting event (i.e., simulated distress). Reduced inhibitory control was associated with more aggression. Behavioral and physiological indicators of empathy were not associated with aggression. Hierarchical regression analyses revealed an interaction effect of heart rate response to distress simulation with inhibitory control in the prediction of aggression. Post hoc analyses indicated a negative association between heart rate response and aggression when inhibitory control was high, but a positive association was found in toddlers who demonstrated low inhibitory control. These results suggest that children are less aggressive when they have both high levels of empathy and inhibitory control. Therefore, both empathy and inhibition are important targets for interventions aiming to reduce or prevent aggression at a young age.


Assuntos
Agressão/fisiologia , Comportamento Infantil/fisiologia , Desenvolvimento Infantil/fisiologia , Empatia/fisiologia , Frequência Cardíaca/fisiologia , Inibição Psicológica , Arritmia Sinusal Respiratória/fisiologia , Adolescente , Adulto , Pré-Escolar , Feminino , Humanos , Masculino , Adulto Jovem
10.
Dev Psychobiol ; 62(4): 454-470, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31489632

RESUMO

Although emotional responses are theorized to be important in the development of empathy, findings regarding the prediction of early empathic behavior by infant behavioral and physiological responses are mixed. This study examined whether behavioral and physiological responses to mild emotional challenge (still face paradigm and car seat task) in 118 infants at age 6 months predicted empathic distress and empathic concern in response to an empathy-evoking task (i.e, experimenter's distress simulation) at age 20 months. Correlation analyses, corrected for sex and baseline levels of physiological arousal, showed that stronger physiological and behavioral responses to emotional challenge at age 6 months were positively related to observed empathic distress, but not empathic concern, at age 20 months. Linear regression analyses indicated that physiological and behavioral responses to challenge at 6 months independently predicted empathic distress at 20 months, which suggests an important role for both physiological and behavioral emotional responses in empathy development. In addition, curvilinear regression analyses showed quadratic associations between behavioral responses at 6 months, and empathic distress and empathic concern at 20 months, which indicates that moderate levels of behavioral responsivity predict the highest levels of empathic distress and empathic concern.


Assuntos
Sistema Nervoso Autônomo/fisiologia , Desenvolvimento Infantil/fisiologia , Emoções/fisiologia , Empatia/fisiologia , Comportamento do Lactente/fisiologia , Arritmia Sinusal Respiratória/fisiologia , Feminino , Seguimentos , Humanos , Lactente , Masculino
11.
Eur Child Adolesc Psychiatry ; 29(3): 363-371, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31154516

RESUMO

Childhood disruptive behaviour has been linked to later antisocial and criminal behaviour. Emotion recognition and empathy impairments, thought to be caused by inattention to the eye region, are hypothesised to contribute to antisocial and criminal behaviour. This is the first study to simultaneously examine emotion recognition and empathy impairments, their relationship, and the mechanism behind these impairments, in children with disruptive behaviour. We hypothesised that children with disruptive behaviour would exhibit negative emotion recognition and cognitive and affective empathy impairments, but that these impairments would not be due to reduced attention to the eye region. We expected these emotion impairments to be driven by disruptive behaviour. We also expected a relationship between emotion recognition and cognitive empathy only. Ninety-two children with disruptive behaviour, who were participating in a police crime prevention programme and rated by their schoolteacher using the Strengths and Difficulties Questionnaire (DB; mean age 8.8 years, 80% male), took part. There was a comparison group of 58 typically developing children (TD; mean age 9.7 years, 78% male). All children completed emotion recognition and empathy tasks, both with concurrent eye tracking to assess social attention. Not only were DB children significantly impaired in negative emotion and neutral emotion recognition, and in cognitive and affective empathy compared to the TD children, but severity of disruptive behaviour also predicted intensity of emotion impairments. There were no differences in social attention to the eye region. Negative emotion recognition and empathy impairments are already present in an identifiable group of children displaying disruptive behaviour. These findings provide evidence to encourage the use of targeted interventions.


Assuntos
Transtornos do Comportamento Infantil/psicologia , Crime/prevenção & controle , Emoções/fisiologia , Empatia/fisiologia , Criança , Feminino , Humanos , Masculino
12.
Dev Psychopathol ; 31(4): 1255-1269, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30319083

RESUMO

We tested the hypothesis that high activity levels in infancy would predict self-regulatory problems and later symptoms of attention deficit and hyperactivity disorder (ADHD) in a longitudinal study of British families (N = 321). Infants' activity levels were assessed at 6 months, using 3 informants' reports from the Infant Behavior Questionnaire (IBQ) and ActiGraphs during baseline, attention, and restraint tasks. At a mean of 33 months, the children were assessed on self-regulatory tasks; at a mean of 36 months, 3 informants reported symptoms of ADHD. At a mean of 7.0 years, the children were assessed on executive function tasks; 3 informants reported on the child's symptoms of ADHD; and diagnoses of disorder were obtained using the Preschool Age Psychiatric Assessment. Informants' reports of high activity levels at 6 months predicted ADHD symptoms in early childhood and diagnoses of ADHD with clinical impairment at age 7. The IBQ activity scale was also associated with the children's later performance on self-regulation tasks in early and middle childhood. Activity level in infancy reflects normal variation and is not a sign of psychopathology; however, these findings suggest that further study of the correlates of high activity level in infancy may help identify those children most at risk for disorder.

13.
Infancy ; 24(5): 807-826, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32677274

RESUMO

Prenatal risk and a lack of inhibitory control have consistently been related to the development of physical aggression in older children. This study examined whether inhibitory control mediated the relation between prenatal risk and aggression in infants and toddlers. The role of gender in this mediation model was also examined. The sample consisted of 161 mother-child dyads (83 boys). A prenatal cumulative risk score was created from a number of well-established risk factors including maternal psychopathology, substance use, and social and socioeconomic disadvantages. At 12 months, children performed an inhibitory control task. Physical aggression was assessed through maternal reports at 12 and 20 months of age. Results showed that higher prenatal risk was associated with more physical aggression. Inhibitory control mediated this association at both 12 and 20 months: higher prenatal risk was related to lower inhibitory control, which in turn led to higher aggression. At 20 months, gender moderated the mediation effect: the mediating role of inhibitory control was only found for girls. These results suggest that even before 2 years of age, inhibitory control is an important construct involved in the relation between prenatal risk and physical aggression.

14.
J Exp Child Psychol ; 166: 251-265, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28946045

RESUMO

This study examined the influence of younger siblings on children's understanding of second-order false belief. In a representative community sample of firstborn children (N=229) with a mean age of 7years (SD=4.58), false belief was assessed during a home visit using an adaptation of a well-established second-order false belief narrative enacted with Playmobil figures. Children's responses were coded to establish performance on second-order false belief questions. When controlling for verbal IQ and age, the existence of a younger sibling predicted a twofold advantage in children's second-order false belief performance, yet this was the case only for firstborns who experienced the arrival of a sibling after their second birthday. These findings provide a foundation for future research on family influences on social cognition.


Assuntos
Compreensão , Cultura , Irmãos/psicologia , Fatores Etários , Ordem de Nascimento , Criança , Pré-Escolar , Feminino , Humanos , Masculino
15.
J Int Neuropsychol Soc ; 23(1): 23-33, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27866504

RESUMO

OBJECTIVES: Previous studies have found that oxytocin (OXT) can improve the recognition of emotional facial expressions; it has been proposed that this effect is mediated by an increase in attention to the eye-region of faces. Nevertheless, evidence in support of this claim is inconsistent, and few studies have directly tested the effect of oxytocin on emotion recognition via altered eye-gaze Methods: In a double-blind, within-subjects, randomized control experiment, 40 healthy male participants received 24 IU intranasal OXT and placebo in two identical experimental sessions separated by a 2-week interval. Visual attention to the eye-region was assessed on both occasions while participants completed a static facial emotion recognition task using medium intensity facial expressions. RESULTS: Although OXT had no effect on emotion recognition accuracy, recognition performance was improved because face processing was faster across emotions under the influence of OXT. This effect was marginally significant (p<.06). Consistent with a previous study using dynamic stimuli, OXT had no effect on eye-gaze patterns when viewing static emotional faces and this was not related to recognition accuracy or face processing time. CONCLUSIONS: These findings suggest that OXT-induced enhanced facial emotion recognition is not necessarily mediated by an increase in attention to the eye-region of faces, as previously assumed. We discuss several methodological issues which may explain discrepant findings and suggest the effect of OXT on visual attention may differ depending on task requirements. (JINS, 2017, 23, 23-33).


Assuntos
Expressão Facial , Fixação Ocular/efeitos dos fármacos , Ocitocina/farmacologia , Reconhecimento Visual de Modelos/efeitos dos fármacos , Reconhecimento Psicológico/efeitos dos fármacos , Adulto , Análise de Variância , Atenção/efeitos dos fármacos , Método Duplo-Cego , Emoções/efeitos dos fármacos , Face , Fixação Ocular/fisiologia , Humanos , Masculino , Testes Neuropsicológicos , Estimulação Luminosa , Saliva/metabolismo , Fatores de Tempo , Adulto Jovem
16.
Dev Psychopathol ; 29(3): 759-773, 2017 08.
Artigo em Inglês | MEDLINE | ID: mdl-27581204

RESUMO

This study examined whether risk status and cumulative risk were associated with autonomic nervous system reactivity and recovery, and emotion regulation in infants. The sample included 121 6-month-old infants. Classification of risk status was based on World Health Organization criteria (e.g., presence of maternal psychopathology, substance use, and social adversity). Heart rate, parasympathetic respiratory sinus arrhythmia, and sympathetic preejection period were examined at baseline and across the still face paradigm. Infant emotion regulation was coded during the still face paradigm. Infants in the high-risk group showed increased heart rate, parasympathetic withdrawal, and sympathetic activation during recovery from the still face episode. Higher levels of cumulative risk were associated with increased sympathetic nervous system activation. Moreover, increased heart rate during recovery in the high-risk group was mediated by both parasympathetic and sympathetic activity, indicating mobilization of sympathetic resources when confronted with socioemotional challenge. Distinct indirect pathways were observed from maternal risk to infant emotion regulation during the still face paradigm through parasympathetic and sympathetic regulation. These findings underline the importance of specific measures of parasympathetic and sympathetic response and recovery, and indicate that maternal risk is associated with maladaptive regulation of stress early in life reflecting increased risk for later psychopathology.


Assuntos
Sistema Nervoso Autônomo/fisiologia , Emoções/fisiologia , Frequência Cardíaca/fisiologia , Mães , Arritmia Sinusal Respiratória/fisiologia , Sistema Nervoso Autônomo/fisiopatologia , Feminino , Humanos , Lactente , Masculino , Sistema Nervoso Parassimpático/fisiologia , Risco , Sistema Nervoso Simpático/fisiologia , Adulto Jovem
17.
Eur Child Adolesc Psychiatry ; 26(7): 805-813, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28181041

RESUMO

To improve outcome for children with antisocial and aggressive behavior, it is important to know which individual characteristics contribute to reductions in problem behavior. The predictive value of a parent training (Parent Management Training Oregon; PMTO), parenting practices (monitoring, discipline, and punishment), and child neurobiological function (heart rate, cortisol) on the course of aggression was investigated. 64 boys with oppositional defiant disorder or conduct disorder (8-12 years) participated; parents of 22 boys took part in PMTO. All data were collected before the start of the PMTO, and aggression ratings were collected three times, before PMTO, and at 6 and 12 month follow-up. Parent training predicted a decline in aggression at 6 and 12 months. Child neurobiological variables, i.e., higher cortisol stress reactivity and better cortisol recovery, also predicted a decline in aggression at 6 and 12 months. Heart rate and parenting practices were not related to the course of aggression. These results indicate that child neurobiological factors can predict persistence or reduction of aggression in boys with ODD/CD, and have unique prognostic value on top of the parent training effects.


Assuntos
Agressão/psicologia , Transtornos de Deficit da Atenção e do Comportamento Disruptivo/psicologia , Transtorno da Conduta/psicologia , Neurobiologia/métodos , Criança , Feminino , Seguimentos , Humanos , Masculino
18.
J Child Psychol Psychiatry ; 57(4): 472-80, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26395975

RESUMO

BACKGROUND: There is a known strong genetic contribution to aggression in those with ADHD. In a previous investigation of a large population cohort, impaired 'emotional/social cognitive' processing, assessed by questionnaire, was observed to mediate the link between COMT Val158Met and aggression in individuals with ADHD. We set out to replicate and extend this finding in a clinical sample, using task-based and physiological assessments of emotional and cognitive processing. Our aim was to test the hypothesis that directly assessed emotional processing mediates the link between COMT Val158Met and aggression in young people with ADHD. METHODS: Males aged 10-17 years with ADHD were recruited from UK community clinics (n = 194). Research diagnostic interviews (parent and child) were used to assess psychopathology and generate DSM-IV Conduct Disorder symptom scores. Participants completed tasks assessing executive function (response inhibition and set shifting), empathy for fear, sadness and happiness, and fear conditioning [measured using skin conductance responses (SCR) to aversive stimuli]. RESULTS: COMT Val allele carriers showed poorer response inhibition (F = 5.27, p = .02) and set shifting abilities (F = 6.45, p = .01), reduced fear empathy (F = 4.33, p = .04) and reduced autonomic responsiveness (lower SCRs) to the conditioned aversive stimulus (F = 11.74, p = .001). COMT Val158Met did not predict impairments in recognising others' emotions or affective empathy for happiness or sadness. Mediation analysis revealed that impaired fear-related mechanisms indirectly mediated the link between COMT Val158Met and aggression. CONCLUSION: Our findings suggest fear mechanisms as possible targets for psychological interventions to disrupt links between genetic risk and aggressive outcomes in ADHD. Our findings also reveal the potential of hypothesis-driven approaches for identifying neuropsychological mechanisms that mediate genetic risk effects on behaviour and psychopathology.


Assuntos
Agressão/fisiologia , Catecol O-Metiltransferase/genética , Emoções/fisiologia , Empatia/fisiologia , Função Executiva/fisiologia , Medo/fisiologia , Inibição Psicológica , Adolescente , Criança , Genótipo , Humanos , Masculino
19.
Child Dev ; 87(1): 256-69, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26525924

RESUMO

Inhibitory control (IC) and negative emotionality (NE) are both linked to aggressive behavior, but their interplay has not yet been clarified. This study examines different NE × IC interaction models in relation to aggressive behavior in 855 preschoolers (aged 2-5 years) using parental questionnaires. Hierarchical regression analyses revealed that NE and IC predict aggression both directly and interactively. The highest aggression levels were reported in children with high NE and low IC. Interestingly, the protective effect of IC for aggressive behavior increases with rising levels of NE. Analyses focusing on physical aggression revealed a significant NE × IC interaction in boys aged 4-5 years only. These findings shed new light on potential compensatory mechanisms for aggressive behavior in developing children.


Assuntos
Agressão/psicologia , Comportamento Infantil/psicologia , Emoções/fisiologia , Inibição Psicológica , Autocontrole/psicologia , Pré-Escolar , Feminino , Humanos , Masculino , Pais , Fatores Sexuais
20.
Dev Psychopathol ; 28(4pt2): 1431-1440, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27020470

RESUMO

Early identification of problems with psychosocial stress regulation is important for supporting mental and physical health. However, we currently lack knowledge about when reliable individual differences in stress-responsive physiology emerge and which aspects of maternal behavior determine the unfolding of infants' stress responses. Knowledge of these processes is further limited by analytic approaches that do not account for multiple levels of within- and between-family effects. In a low-risk sample (n = 100 dyads), we observed infant cortisol and mother/infant behavior during regular play and stress sessions longitudinally from age 1 to 3, and used a three-level model to separately examine variability in infant cortisol trajectories within sessions, across years, and across infants. Stable individual differences in hypothalamus-pituitary-adrenal axis regulation were observed in the first 3 years of life. Infants of less sensitive and more intrusive mothers manifested stress sensitization, that is, elevated cortisol levels during and following stress exposure, a profile related to behavioral distress. These findings have important practical implications, suggesting that children at risk for long-term stress dysregulation may be identified in the earliest years of life.


Assuntos
Hidrocortisona/análise , Comportamento do Lactente/fisiologia , Comportamento Materno/fisiologia , Estresse Psicológico/fisiopatologia , Adulto , Feminino , Humanos , Sistema Hipotálamo-Hipofisário/fisiopatologia , Individualidade , Lactente , Comportamento do Lactente/psicologia , Masculino , Relações Mãe-Filho , Sistema Hipófise-Suprarrenal/fisiopatologia , Saliva/química , Estresse Psicológico/psicologia , Adulto Jovem
SELEÇÃO DE REFERÊNCIAS
Detalhe da pesquisa