Emotion processing in children who do and do not stutter: An ERP study of electrocortical reactivity and regulation to peer facial expressions

PurposeEvent-related brain potentials (ERPs) were used to investigate the neural correlates of emotion processing in 5- to 8-year-old children who do and do not stutter.MethodsParticipants were presented with an audio contextual cue followed by images of threatening (angry/fearful) and neutral facial expressions from similarly aged peers. Three conditions differed in audio-image pairing: neutral context-neutral expression (neutral condition), negative context-threatening expression (threat condition), and reappraisal context-threatening expression (reappraisal condition). These conditions reflected social stimuli that are ecologically valid to the everyday life of children.ResultsP100, N170, and late positive potential (LPP) ERP components were elicited over parietal and occipital electrodes. The threat condition elicited an increased LPP mean amplitude compared to the neutral condition across our participants, suggesting increased emotional reactivity to threatening facial expressions. In addition, LPP amplitude decreased during the reappraisal condition— evidence of emotion regulation. No group differences were observed in the mean amplitude of ERP components between children who do and do not stutter. Furthermore, dimensions of childhood temperament and stuttering severity were not strongly correlated with LPP elicitation.ConclusionThese findings are suggestive that, at this young age, children who stutter exhibit typical brain activation underlying emotional reactivity and regulation to social threat from peer facial expressions.     

不同相关线索下海洛因成瘾者的反应差异及反应抑制特征：来自ERP的证据

采用ERP技术, 探究海洛因成瘾者在不同相关线索下的脑电反应及其与冲动性的关系。实验采用组间实验设计和双选择Oddball范式, 要求海洛因成瘾组和健康对照组被试对标准刺激与偏差刺激分别做不同的按键反应, 记录他们的EEG数据。结果发现：相比对照组被试, 海洛因成瘾者在观看药物相关线索时诱发的N2波幅更小, P3波幅更大; 在成瘾组内, 相比用药工具线索, 用药动作线索诱发了更小的N2波幅和更大的P3波幅。这表明海洛因成瘾者对药物相关线索存在反应抑制缺陷, 且不同的药物相关线索会激发海洛因成瘾者不同程度的反应抑制缺陷, 用药动作线索比用药工具线索更大程度地影响成瘾者的反应抑制能力, 反映出更高的动作冲动性。     

Children and Violence: The Role of Children’s Regulation in the Marital Aggression–Child Adjustment Link

Exposure to marital psychological and physical abuse has been established as a risk factor for children’s socio-emotional, behavioral, and cognitive problems. Understanding the processes by which children develop symptoms of psychopathology and deficits in cognitive functioning in the context of marital aggression is imperative for developing efficient and effective treatment programs for children and families, and has far-reaching mental health implications. The present paper outlines our research program, Child Regulation and Exposure to Marital Aggression, which focuses on children’s emotional and physiological reactivity and regulation as pathways in the marital aggression–child development link. Findings from our research program, which highlight the importance of children’s regulatory processes for understanding children’s adjustment in contexts of intimate partner violence, are presented, and future directions in this line of inquiry are outlined.     

The relationship between mental toughness and affect intensity

Mentally tough athletes are conceptualized as being able to function effectively in stressful situations and recent research has found small to moderate correlations between mental toughness and coping. Despite this no research has thus far examined the possibility that mentally tough athletes experience less intense emotions. This paper tested the relationship between mental toughness and affect intensity to determine whether mentally tough athletes generally experienced more or less intense emotions. A sample of 112 sport performers (55 men and 57 women) aged between 18 and 51 years (M = 29.3, s = 10.3) acted as participants, and ranged from recreational to national level in a variety of sports. Mental toughness and affect intensity were found to be unrelated. This is an important finding because it suggests participants with high or low levels of mental toughness do not characteristically experience more or less intense emotions. Thus there is no evidence to suggest the ability of mentally tough athletes to remain relatively unaffected by pressure or adversity is due to lower levels of affect intensity. More research is required to understand how mentally tough athletes (in comparison to less tough athletes) maintain control and high levels of performance in stressful circumstances.     

Similarity in Spatial Origin of Information Facilitates Cue Competition and Interference

Two lick suppression studies were conducted with water-deprived rats to investigate the influence of spatial similarity in cue interaction. Experiment 1 assessed the influence of similarity of the spatial origin of competing cues in a blocking procedure. Greater blocking was observed in the condition in which the auditory blocking cue and the auditory blocked cue originated at the same spatial location. Recent investigations have demonstrated that manipulations that impact competition between cues trained together have similar effects on interference between cues trained apart. Therefore, Experiment 2 investigated the influence of similarity of the spatial origin in proactive interference of Pavlovian conditioning by separately pairing two auditory cues with a common outcome, originating at the same spatial location or different spatial locations. Greater proactive interference was observed in the condition in which the interfering cue and target cue originated at the same spatial location. The results are considered in light of the possibility that a similar mechanism may underlie interference between cues trained apart and cue competition between cues trained together.     

Idiodynamics Vis-à-vis Psychophysiology: An Idiodynamic Portrayal of Cardiovascular Reactivity

Idiodynamics offers a conceptual foundation upon which alternatives to the prevailing model of cardiovascular reactivity could be advanced, built upon systematic investigations of individuals. The origins of a union of idiodynamics and psychophysiology are described, accompanied by an empirical study that exemplifies this synthesis. In the study, a montage of cardiovascular measures was used to assess autonomic patterns in six subjects across a range of laboratory tasks on three occasions. Cardiovascular profiles were derived with p-technique factor analysis and then group aggregated with chain p-technique. The group pattern suggested three components: rate, contractility, and peripheral resistance. When individual profiles were compared to the group, consistencies and disparities appeared. Differences in the number of factors, percentage of variance explained, and dominance of specific components distinguished subjects from one another, leading to a hypothesis about underlying cardiovascular complexity. Idiodynamics, combined with novel methodologies, can expand the construct of reactivity beyond traditional stimulus-response conceptualizations.     

Gender and cardiovascular disease: a psychobiological and integrative approach

Coronary artery disease is the most common cause of morbidity, mortality, and economic loss in all industrialized countries. Although there are gender differences in the prevalence, causes, symptoms, treatment, and outcome of heart disease, the differences are complex and often misunderstood. These gender differences are a function of psychological influences, physiological influences, and an interaction of the two. Understanding these complex interactions and how they differentially influence the development and progression of heart disease will ultimately contribute to a greater understanding of how to integrate information from medicine and epidemiology with that from psychology and behavioral medicine. Ultimately, it is this integrated approach that will allow us to better understand heart disease in both men and women.     

The negative feedback dysregulation effect: losses of motor control in response to negative feedback

Negative feedback has paradoxical features to it. This form of feedback can have informational value under some circumstances, but it can also threaten the ego, potentially upsetting behaviour as a result. To investigate possible consequences of the latter type, two experiments (total N?=?159) presented positive or negative feedback within a sequence-prediction task that could not be solved. Following feedback, participants had to control their behaviours as effectively as possible in a motor control task. Relative to positive feedback, negative feedback undermined control in a manner suggesting emotional upset (Experiment 1). These reactions lasted for at least three seconds and were especially pronounced among people reporting that they typically lose control in the context of their negative emotions (Experiment 2). The findings document a novel form of behavioural dysregulation that occurs in response to negative feedback while also highlighting the utility of motor control perspectives on self-control.     

Are you sure about that? Eliciting confidence ratings may influence performance on Raven's progressive matrices

Confidence ratings (CR) have often been integrated into reasoning and intelligence tasks as a means for assessing meta-reasoning processes. Although it is often assumed that eliciting these judgements throughout reasoning tasks has no effect on the underlying performance outcomes, this is yet to be established empirically. The current study examines whether eliciting CR from participants during a fluid-reasoning task influences their performance and how this effect is moderated by their initial self-confidence in their own reasoning abilities. In a first experiment, we found that participants performing CR during Raven's Progressive Matrices significantly outperformed a control group who did not provide ratings. Additionally, a second experiment demonstrated that CR only facilitated performance in participants who have a high level of initial self-confidence in their reasoning ability, whereas they were detrimental to participants low in self-confidence.