State anger and prefrontal brain activity: evidence that insult-related relative left-prefrontal activation is associated with experienced anger and aggression

Research has demonstrated that left-prefrontal cortical activity is associated with positive affect, or approach motivation, and that right-prefrontal cortical activity is associated with negative affect, or withdrawal motivation. In past research, emotional valence (positive-negative) has been confounded with motivational direction (approach-withdrawal), such that, for instance, the only emotions examined were both positive and approach related. Recent research has demonstrated that trait anger, a negative but approach-related emotion, is associated with increased left-prefrontal and decreased right-prefrontal activity, suggesting that prefrontal asymmetrical activity is associated with motivational direction and not emotional valence. The present experiment tested whether state-induced anger is associated with relative left-prefrontal activity and whether this prefrontal activity is also associated with aggression. Results supported these hypotheses.     

The effect of manipulated sympathy and anger on left and right frontal cortical activity

The present research extended past research demonstrating that approach-motivated anger is associated with greater left than right frontal cortical activity. Because past research had examined difference scores between left and right frontal activity, it was unable to test whether approach-motivated anger increased left activity, decreased right activity, or both. In addition, the present research examined a potential moderator of the effect of insult on left frontal activity. That is, it tested whether sympathy for an insulting person would reduce the left frontal activity that occurs following being insulted. Results indicated that left frontal activity was increased and right frontal activity was decreased by the insult. Moreover, these effects were inhibited when high levels of sympathy were first aroused.     

The effect of personal relevance and approach-related action expectation on relative left frontal cortical activity

Past research using a variety of methods has suggested that the frontal cortex is asymmetrically involved in the experience and expression of positive (or approach motivational) and negative (or withdrawal motivational) affects, with the left frontal region being involved in positive affects (or approach) and the right frontal region being involved in negative affects (or withdrawal). However, some studies have failed to replicate these effects, leaving many scientists questioning the meaning of the past supportive findings. To examine these inconsistencies in results, we tested the hypothesis that increasing the personal relevance of the stimuli and approach motivational intensity would increase relative left frontal activation. Results supported the predictions. Moreover, by showing the predicted effects with anger-inducing stimuli, the results demonstrated that motivational direction, rather than affective valence, accounts for asymmetrical frontal cortical activity.     

Proneness to hypomania/mania symptoms or depression symptoms and asymmetrical frontal cortical responses to an anger-evoking event

The behavioral approach system (BAS) reflects the propensity to respond to signals of reward, including stimuli associated with safety and goal-oriented attack (e.g., anger). Hypomania/mania has been posited to involve increased BAS activity. In contrast, depression has been posited to involve decreased BAS activity. Building on past research, which suggests that increased left frontal cortical activity is a neurophysiological index of BAS activity, the present research tested the hypotheses that proneness toward hypomania/mania symptoms would be related to increased relative left frontal activity and that proneness toward depression symptoms would be related to decreased relative left frontal activity in response to an anger-evoking event. Results from 67 individuals who had completed a measure of proneness toward these affective symptoms and were exposed to an anger-evoking event supported the hypotheses.     

Separating emotion and motivational direction in fear and anger: effects on frontal asymmetry

State effects on frontal alpha electroencephalograph asymmetry (ASY) are thought to reflect approach and withdrawal motivational tendencies. Although this motivational direction model has inspired a large body of research, efforts to disentangle influences of emotion (EMO) and motivational direction (MOT) on ASY are rare. The authors independently manipulated EMO (fear and anger) and MOT (approach and withdrawal) in a between-subjects design. Irrespective of MOT, anger led to greater changes toward relative left frontal activation (LFA) than did fear. Conversely, higher ratings of negative valence were associated with greater changes toward LFA in withdrawal but with greater changes toward relative right frontal activation in approach. Results are discussed within a model based on behavioral inhibition system-behavioral activation system theory.     

On motivational influences,moving beyond valence,and integrating dimensional and discrete views of emotion

ABSTRACT

The field of cognition and emotion has grown considerably over the past 30 years, with an increased emphasis on the relationships between emotional and motivational components and how they contribute to basic perceptual, cognitive, and neural processes. For instance, research has revealed that emotion often influences these processes via emotion’s relationship with motivational dimensions, as when positive emotions low versus high in approach motivational intensity have different influences on attentional and other cognitive processes. Research has also revealed that motivational direction (approach vs. withdrawal) and affective valence (positive vs. negative) are not as closely related as once was theorised; that is, positive affect is not inevitably associated with approach motivation and negative affect is not inevitably associated with withdrawal motivation. These and other lines of research with anger have suggested that the field needs to move beyond a focus on affective valence and it needs to consider an integration of dimensional and discrete models of emotion. The article also includes some suggestions for improving methods of measuring and inducing emotions and some recommendations for future researchers.     

左前额叶与趋近动机加工的关系

在加工正性情绪时, 前额叶左侧激活水平大于右侧。而正性情绪往往伴随着趋近动机。因此为了探索这种现象反映的究竟是正性情绪加工还是趋近动机加工, 文章总结了两个研究领域中的有关证据：来自特质或状态愤怒情绪与左前额叶相对激活关系领域的研究证据和来自身体姿势变化(包括整体姿势变化和单侧肌肉紧缩)对左前额叶相对激活的影响领域的研究证据。前者的一致发现是：左前额叶参与加工由愤怒情绪引发的趋近动机。后者的一致发现是：不同的身体姿势能够改变左前额叶的相对激活水平。两种领域的研究证据汇聚起来证明左前额叶参与加工趋近动机。文章还指出了将来研究的注意事项和可能方向：精确定义回避型愤怒; 探索愤怒情绪是否在加工晚期诱发趋近或回避动机; 探索不同方式诱发的趋近动机是否在脑机制上存在差异。     

Interpersonal reactions toward depression and anger

Two studies examined the effect of interpersonal attitude on reactions toward others' expression of anger or depression, Participants read a story in which their schoolmate experienced a negative event and expressed anger or depression, and reported their perceptions, affective reactions, and behavioural intentions such as support or rejection. The results indicated that an expression of anger elicited more negative reactions than an expression of depression only when a person whom participants disliked expressed the emotion. Furthermore, structural equation modelling indicated that the effect of interpersonal attitude on sympathy, blame, and support intention was mediated by the perception of the distressfulness of the event. The discussion considered the processes through which the expression of negative emotions evokes positive or negative interpersonal reactions.     

Anger and asymmetrical frontal cortical activity: Evidence for an anger–withdrawal relationship

Anger has been associated with relative left frontal cortical activity, reflecting its approach (vs. withdrawal) motivational tendency. However, there may be contexts in which anger is associated with withdrawal motivation and, hence, relative right frontal cortical activity. Based on past research, we hypothesised that for some individuals, interracial interactions may be one such context, as societal pressure to be politically correct dictates that anger should not be expressed. Thus, in the context of an interracial interaction, the experience of anger may coincide with a desire to withdraw from the situation. Cortical activity was measured while White participants anticipated an interracial interaction. Consistent with expectations, self-reported anger was associated with relative right frontal cortical activity. In general, the motivational correlates of anger may be partially determined by the specific attributes of the person and the social context in which anger occurs.     

Microstructural integrity of white matter moderates an association between childhood adversity and adult trait anger

Amongst a number of negative life sequelae associated with childhood adversity is the later expression of a higher dispositional tendency to experience anger and frustration to a wide range of situations (i.e., trait anger). We recently reported that an association between childhood adversity and trait anger is moderated by individual differences in both threat-related amygdala activity and executive control-related dorsolateral prefrontal cortex (dlPFC) activity, wherein individuals with relatively low amygdala and high dlPFC activity do not express higher trait anger even when having experienced childhood adversity. Here, we examine possible structural correlates of this functional dynamic using diffusion magnetic resonance imaging data from 647 young adult men and women volunteers. Specifically, we tested whether the degree of white matter microstructural integrity as indexed by fractional anisotropy modulated the association between childhood adversity and trait anger. Our analyses revealed that higher microstructural integrity of multiple pathways was associated with an attenuated link between childhood adversity and adult trait anger. Amongst these pathways was the uncinate fasciculus (UF; ΔR ² = 0.01), which not only provides a major anatomical link between the amygdala and prefrontal cortex but also is associated with individual differences in regulating negative emotion through top-down cognitive reappraisal. These findings suggest that higher microstructural integrity of distributed white matter pathways including but not limited to the UF may represent an anatomical foundation serving to buffer against the expression of childhood adversity as later trait anger, which is itself associated with multiple negative health outcomes.     

Suicidal and violent behavior: The role of anger,emotion dysregulation,and impulsivity

Suicidality and violence are serious public health problems. A rich literature supports the relationship between suicidality and violence, including common associations with trait anger. However, less is known about how trait anger may facilitate these behaviors. Two potential mechanisms in this relationship are emotion dysregulation and impulsivity, both of which are linked to increased anger, suicidality, and violence. We investigated anger as a common underlying factor for both suicidal and violent behavior, and emotion dysregulation and impulsivity (i.e., negative and positive urgency) as potential mediators in this relationship. Results demonstrate that trait anger was associated with both suicidal and violent behavior. Further, emotion dysregulation mediated the anger and suicidal behavior relationship whereas both negative and positive urgency mediated the anger and violent behavior relationship. Although trait anger may be a common underlying factor for both suicidal and violent behavior, the nature of these relationships seems to vary significantly.     

Anger style, psychopathology, and regional brain activity

Depression and anxiety often involve high levels of trait anger and disturbances in anger expression. Reported anger experience and outward anger expression have recently been associated with left-biased asymmetry of frontal cortical activity, assumed to reflect approach motivation. However, different styles of anger expression could presumably involve different brain mechanisms and/or interact with psychopathology to produce various patterns of brain asymmetry. The present study explored these issues by comparing resting regional electroencephalographic activity in participants high in trait anger who differed in anger expression style (high anger-in, high anger-out, both) and participants low in trait anger, with depression and anxiety systematically assessed. Trait anger, not anger-in or anger-out, predicted left-biased asymmetry at medial frontal EEG sites. The anger-in group reported higher levels of anxious apprehension than did the anger-out group. Furthermore, anxious apprehension moderated the relationship between trait anger, anger-in, and asymmetry in favor of the left hemisphere. Results suggest that motivational direction is not always the driving force behind the relationship of anger and left frontal asymmetry. Findings also support a distinction between anxious apprehension and anxious arousal.     

Personality links to anger: Evidence for trait interaction and differentiation across expression style

Anger is a commonly experienced emotion, although marked individual differences in the expression of anger are observed. Basic dimensions of personality (e.g., Big Five traits) have been shown to predict the experience of trait anger; however, little work has addressed the personality correlates of broader conceptualisations of trait anger (e.g., inward or outward expressions). Additionally, while some recent work has suggested that basic personality traits may show interactive influences on anger expression this work has yet to be independently confirmed. In a large sample of adults we examined, firstly, how Big Five traits associated with several components of anger as measured by the State-Trait Anger Expression Inventory. Secondly, we examined whether these associations were further qualified by interactions between Big Five traits. Results indicated neuroticism and, to a lesser extent, (low) agreeableness, were the traits most associated with components of trait anger. Conscientiousness and extraversion were also noted to show links to more focal components of anger. Moderation was observed: conscientiousness moderated neuroticism’s relationship with anger control, and agreeableness and conscientiousness, in a three-way interaction, moderated neuroticism’s relationship with trait anger. These observations help to further clarify the role of Big Five personality traits as a foundation for the experiences of anger, demonstrating how anger style varies across personality configuration.     

Trait emotions and affective modulation of the startle eyeblink: on the unique relationship of trait anger

We examined relationships among individual differences in trait emotions and the emotion-modulated startle-eyeblink response. In particular, we examined the extent to which trait anger, which is negative in valence, would be associated with a pattern of approach motivation in startle eyeblink responses to appetitive stimuli. Self-reported trait emotions were compared with emotion-modulated startle eyeblink responses to auditory probes during appetitive, aversive, and neutral pictures. Results revealed that trait anger, enjoyment, and surprise were each associated with greater blink inhibition to appetitive pictures, indicating an approach motivational response. No other trait emotions were associated with startle eyeblink responses to appetitive or aversive pictures. These results support the idea that trait anger, although experienced as a negative emotion, is associated with an approach-related motivational response to appetitive stimuli at basic, reflexive levels of processing.     

Prediction of symptoms of emotional distress by mood regulation expectancies and affective traits

Three studies examined negative mood regulation expectancies (NMRE) and affective traits as independent predictors of self‐reported symptoms of emotional distress. NMRE represent individuals' beliefs that they can alleviate unpleasant emotional states. Stronger NMRE are associated with more adaptive coping, more positive cognition during negative moods, more effective responses under stress and less emotional distress. Affective traits represent long‐term tendencies toward particular affective experiences; they confer risk for specific symptoms of emotional distress. In Study 1, NMRE, trait negative affect (TNA) and trait positive affect (TPA) were all independently associated with depression among students and staff of a German university. In Study 2, in prospective analyses among U.S. college students traits exhibited hypothesised relationships with anxiety and depressive symptoms, and NMRE uniquely predicted anhedonic depression. Study 3 revealed independent prediction of change in symptoms over time by NMRE among U.S. college students, whereas traits were not associated with change in distress, anxiety and depression symptoms. Results suggest independent roles for NMRE and traits in the development of depression and anxiety symptoms and highlight the importance of NMRE as a potential target of therapeutic intervention in the process of symptom change.     

The relationship of momentary anger and impulsivity to bulimic behavior

Past research has suggested that negative affect may be a causal factor for eating disordered behaviors. More specifically, research has shown that anger appears to be one aspect of negative affect that is particularly relevant in bulimic patients. Previous studies have also shown that the relationship between negative affect and eating disordered behaviors may partially depend upon personality variables such as impulsivity. The present study examined whether the relationship between anger and eating disordered behaviors is moderated by impulsivity. Subjects completed an ecological momentary assessment (EMA) protocol for an average of 2 weeks. Findings revealed that overall antecedent anger level and the variability of antecedent anger predicted binge-eating episodes and that these relationships were moderated by participants' level of impulsivity. These findings suggest that personality variables impact the way that anger and eating behaviors relate. They also suggest that the variability of antecedent anger may be a fruitful avenue for future research for those interested in causal variables associated with bulimia nervosa.     

Distal predictors of trait driving anger. The influence of attachment styles through the mediation effect of general anger and self-esteem

Trait driving anger has been widely studied in recent years. However, whereas its proximal (personality) correlates have been well established, possible distal variables have not yet been explored. The aim of the current research study was to analyse the association of attachment styles with trait driving anger, by testing the hypothesis that both trait general anger and self-esteem would mediate this relationship. The results revealed positive and significant relationships between preoccupation, self-sufficiency, value of parental authority and parental interference, and trait driving anger. Furthermore, a SEM-based multiple mediation analysis showed that both trait general anger and self-esteem significantly mediated the relationship between preoccupation and trait driving anger, and self-sufficiency and trait driving anger, with a medium effect size (f² = 0.16). Finally, some aspects of the research in this new area are addressed, and both the clinical implications of these results and the limitations of the study are discussed.     

Social anxiety and the experience of positive emotion and anger in everyday life: an ecological momentary assessment approach

Abstract

A few recent studies have found evidence showing that social anxiety is associated with diminished positive affect and elevated anger. However, prior work has relied on trait self-report measures of global positive mood or anger. In this preliminary study, we examined how trait social anxiety relates to moment-to-moment positive and angry emotional states as people navigate through their natural environment in a given day. Of additional interest was whether any associations were limited to social situations or were evident more broadly in non-social situations as well. For 14 days, 38 non-clinical community adults carried electronic diaries to assess their experience of positive emotions, anger, and their current social context and activity. Participants were randomly prompted up to four times per day, leading to 1702 observations. Results showed that social anxiety was associated with less time spent feeling happy and relaxed and more time spent feeling angry throughout the day. In general, people felt happier when they were with other people compared to being alone. Interestingly, people with relatively higher levels of social anxiety reported fewer and less intense positive emotions and greater anger episodes across social and non-social situations.     

Perfectionism, anger, and anger rumination

Anger and anger rumination are considered to be detrimental to both physical and psychological well being. Furthermore, perfectionism, as a personality construct, seems to be related to various types of maladjustment. Whereas perfectionism has been characterized as being positive when an individual derives pleasure from striving for excellence yet recognizes and accepts individual limitations, it is deemed negative when the individual has unrealistic expectations and is never satisfied with his or her performance. The present study examined whether positive and negative perfectionism was associated with anger and anger rumination. The Farsi version of the Positive and Negative Perfectionism Scale and the Farsi version of the Anger Rumination Scale, as well as Spielberger's State-Trait Anger Scale were completed by 384 Iranian students. Results showed that anger and anger rumination were, as expected, associated negatively with positive perfectionism and associated positively with negative perfectionism. Positive perfectionism enables individuals to strive for success in a flexible manner and, thus, to experience satisfaction and pleasure rather than dissatisfaction, frustration, and anger. Conversely, negative perfectionism makes individuals vulnerable to emotional distress such as predisposition to experience anger and anger rumination through setting high standards for performance, overgeneralization of perceived failures, negative self-evaluation, self-blame, and measuring self-worth in terms of unachievable goals of accomplishment and productivity. Hence, perfectionism may be regarded as having both adaptive and maladaptive aspects with regard to health.