Motivated but not engaged: The implicit achievement motive requires difficult or unclear task difficulty conditions to exert an impact on effort

Integrating the achievement motive literature and motivational intensity theory, we expected the implicit achievement motive (nAch) to directly determine effort mobilization when task difficulty is unclear. However, nAch should interact with task difficulty in determining effort mobilization when task difficulty is clear. Participants worked on an easy versus difficult memory task (Study 1) or a clear versus unclear arithmetic task (Study 2). We used the Picture-Story-Exercise to assess nAch and pre-ejection period (PEP) to operationalize effort. As predicted, PEP reactivity was strong in the difficult-high-nAch condition and in the unclear-high-nAch condition but low in the other three conditions. Supporting motivational intensity theory, our results showed that nAch requires difficult or unclear task conditions to exert a noticeable impact on effort.     

Anhedonic symptoms of depression are linked to reduced motivation to obtain a reward

People with depression report reduced motivation to obtain a reward and reduced affective responses to reward. However, studies focusing on the relation between anhedonia and deficits in reward processing are scarce. Furthermore, studies investigating wanting through cardiovascular reactivity and liking through facial electromyography in human beings are also scarce. In this study, we used the Temporal Experience of Pleasure Scale score as a continuous predictor variable of anhedonia and we manipulated two within-person conditions (wanting vs. liking). Participants earned money if their performance on a memory task exceeded a particular standard. As expected, effort-related cardiovascular reactivity and self-reports during the anticipatory phase were lower for participants scoring high on anhedonia. Moreover, task performance outcomes were worse for highly anhedonic participants. However, the zygomaticus major muscle’s activity during the consummatory phase was unrelated to the anhedonia score. The present study underlines the importance of anhedonic symptoms, particularly in reduced anticipatory motivation to obtain a reward.     

Conscientiousness and effort-related cardiac activity in response to piece-rate cash incentives

Although conscientiousness predicts many aspects of motivation, from delay of gratification to higher achievement, its relationship to responses to monetary incentives is surprisingly inconsistent. Several studies have found null or negative relationships between conscientiousness and behavioral performance in piece-rate, pay-for-performance tasks, in which people earn money for each unit of work completed. In the present study, we examined the role of conscientiousness in effort-related cardiac activity and behavioral performance during a pay-for-performance task. People worked on a self-paced, piece-rate cognitive task in which they earned 1 cent or 5 cents, manipulated within-person, for each correct response. Conscientiousness predicted greater physiological effort (i.e., shorter pre-ejection period [PEP] reactivity) as incentives increased but had no effect on behavioral performance. The findings suggest that conscientiousness is significantly related to effort for piece-rate tasks, and they reinforce a core idea in motivational intensity theory: effort, performance, and persistence are distinct outcomes that often diverge, so drawing conclusions about effort from performance can be complex.     

Differentiating challenge reactivity from psychomotor activity in studies of children's psychophysiology: considerations for theory and measurement

Current methods of assessing children’s physiological “stress reactivity” may be confounded by psychomotor activity, biasing estimates of the relation between reactivity and health. We examined the joint and independent contributions of psychomotor activity and challenge reactivity during a protocol for 5- and 6-year-old children (N = 338). Measures of parasympathetic reactivity (respiratory sinus arrhythmia [RSA]) and sympathetic reactivity (preejection period [PEP]) were calculated for social, cognitive, sensory, and emotional challenge tasks. Reactivity was calculated relative to both resting and a paired comparison task that accounted for psychomotor activity effects during each challenge. Results indicated that comparison tasks themselves elicited RSA and PEP responses, and reactivity adjusted for psychomotor activity was incongruent with reactivity calculated using rest. Findings demonstrate the importance of accounting for confounding psychomotor activity effects on physiological reactivity.     

Implicit achievement motive limits the impact of task difficulty on effort-related cardiovascular response

In contrast to the motive literature, motivational intensity theory predicts that the implicit achievement motive (nAch) should only exert an indirect impact on effort by limiting the impact of task difficulty. To contrast these two views, sixty-eight participants with a low or high nAch performed an easy or difficult arithmetic task. Effort was assessed using cardiac pre-ejection period (PEP). Supporting motivational intensity theory’s view, PEP response was low in both easy-task conditions but stronger in the high-nAch group than in the low-nAch group in the difficult task. These findings suggest that nAch exerts an indirect effect on effort investment by setting the maximally justified effort instead of directly determining the amount of effort that is invested to satisfy the motive.     

Emotion Regulation via the Autonomic Nervous System in Children with Attention-Deficit/Hyperactivity Disorder (ADHD)

Despite growing interest in conceptualizing ADHD as involving disrupted emotion regulation, few studies have examined the physiological mechanisms related to emotion regulation in children with this disorder. This study examined parasympathetic and sympathetic nervous system reactivity via measures of respiratory sinus arrhythmia (RSA) and cardiac pre-ejection period (PEP) in children with ADHD (n = 32) and typically developing controls (n = 34), using a novel emotion task with four conditions: negative induction, negative suppression, positive induction, and positive suppression of affect. Both groups showed strong task-response effects in RSA. However, typically developing children showed systematic variation in parasympathetic activity (RSA) depending on both emotion valence (more activation for negative emotion, reduced activation for positive emotion) and task demand (more activation for suppression than induction). In contrast, children with ADHD displayed a stable pattern of elevated parasympathetic activity (RSA) across all task conditions compared to baseline. No group differences in sympathetic activity (PEP) were observed. It is concluded ADHD in childhood is associated with abnormal parasympathetic mechanisms involved in emotion regulation.     

The relationship between depressive symptoms and error monitoring during response switching

Heightened sensitivity to failure and negative information is thought to be an important maintenance mechanism for symptoms of depression. However, the specific neural and behavioral correlates of the abnormal reactions to errors associated with depression are not yet well understood. The present study was designed to shed new light on this issue by examining how depressive symptoms relate to error monitoring in the context of different task demands. We used a modified flanker task in which the stimulus–response (S–R) mappings were reversed between blocks, differentiating relatively easy nonreversal blocks from the more-demanding S–R reversal blocks. Undergraduates performed this task and then completed a self-report measure of anhedonic depression. The results revealed that depressive symptoms were related to poorer posterror accuracy in the more-difficult S–R reversal blocks, but not in the easier nonreversal blocks. Event-related brain potentials (ERPs) within a subsample of these participants further indicated that depressive symptoms were associated with reduced error positivity (Pe) amplitudes in both block types, suggesting that depressive symptoms were related to reduced attention allocation to errors across the easy and hard blocks. Finally, brain–behavior correlations indicated that highly depressed individuals failed to display a relationship between Pe amplitude and posterror accuracy in the S–R reversal blocks, a relationship that was intact in the low-depression group. Together, these results suggest that task demands play a critical role in the emergence of error-monitoring abnormalities in depression.     

Mediational Pathways Through Which Positive and Negative Emotionality Contribute to Anhedonic Symptoms of Depression: A Prospective Study of Adolescents

This study takes a developmental psychopathological approach to examine mechanisms through which baseline levels of positive emotionality (PE) and negative emotionality (NE) prospectively predict increases in anhedonic depressive symptoms in a community sample of 350 adolescents (6th–10th graders). Dependent stressors mediated the relationship between baseline levels of NE and anhedonic depressive symptoms after controlling for initial symptoms. Supportive relationships mediated the relationship between baseline levels of PE and anhedonic depressive symptoms, after controlling for baseline symptoms. In addition, NE X PE interacted to predict later anhedonic depressive symptoms, such that adolescents with low levels of PE and high levels of NE experienced the greatest increase in anhedonic depressive symptoms. Last, supportive relationships interacted with baseline PE to predict prospective changes in anhedonic depressive symptoms, such that adolescents with low PE and low supportive relationships experienced the greatest increase in anhedonic depressive symptoms. Results are discussed in terms of current theoretical models of the link between temperament and depression. This work was supported, in part, by NIMH grants R03-MH 066845 and 1R01HD054736-01A1 to Benjamin L. Hankin.     

Dysphorics can control depressive mood’s informational impact on effort mobilization

Individuals?? level of depression has been shown to systematically determine their amount of effort-related cardiovascular reactivity (see Brinkmann and Gendolla in Motiv Emot, 31:71?C82, 2007; J Pers Soc Psychol, 94:146?C157, 2008). By means of a mood cue manipulation the present study aimed at providing a conclusive test whether this is due to the informational impact of depressed mood. After habituation, students with low versus high depression scores worked on a memory task under ??do-your-best?? instructions. Half of them received a cue before the task, suggesting that their current mood may have an impact during task performance. As expected, dysphoric participants showed higher systolic blood pressure reactivity during task performance than nondysphorics when no cue was given. This pattern was reversed in the cue condition, indicating that dysphorics effectively managed to reduce the depressive mood impact on their task demand appraisals and effort mobilization.     

Intraindividual relations between the intensity and disclosure of daily emotional events: The moderating role of depressive symptoms

Individuals with high levels of depressive symptoms tend to engage in lower levels of emotional disclosure than individuals who are lower in depressive symptoms. However, little is known about how depressive symptoms relate to the intraindividual relation between daily disclosure and the intensity of the daily events. The authors addressed these relations using a daily diary methodology. College students (N = 239) completed a measure of depression symptoms. They then completed measures of the intensity of the day's most unpleasant event and their disclosure of that event each day for 7 days. Results indicated that depression moderated the intensity-disclosure relation such that depression symptoms were associated with diminished emotional disclosure for high-intensity events but not for low-intensity events. Individuals with relatively higher levels of depressive symptoms also experienced unpleasant daily events at a higher intensity level than did individuals with relatively fewer symptoms. Sex differences emerged such that men were less likely than women to disclose high-intensity negative events. These findings extend the use of the diary methodology to the study of emotional disclosure and also suggest possible interventions for counseling psychology practitioners.     

Effort-based decision-making in major depressive disorder: A translational model of motivational anhedonia

Anhedonia is a core feature of major depressive disorder (MDD), but the precise nature of anhedonic symptoms is unknown. Whereas anhedonia has traditionally been viewed as a deficit in the experience of pleasure, more recent evidence suggests that reduced anticipation and motivation may also be a core feature of this symptom. Here, we provide data from a study in MDD patients and healthy controls using a translational measure of reward motivation, the Effort Expenditure for Rewards Task (EEfRT or "effort"). This task offers subjects a series of trials where they may choose to expend more or less effort for the opportunity to win varying amounts of monetary rewards. We found that MDD patients were less willing to expend effort for rewards than controls. Additionally, we observed that patients were less able to effectively use information about magnitude and probability of rewards to guide their choice behavior. Finally, within the MDD patient group, duration of the current episode was a significant negative predictor of EEfRT task performance. These findings offer novel support for theoretical models proposing that anhedonia in MDD may reflect specific impairments in motivation and reward-based decision-making. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Cognitive Vulnerability–Stress Model of Depression During Adolescence: Investigating Depressive Symptom Specificity in a Multi-Wave Prospective Study

Depression commonly co-occurs with anxiety and externalizing problems. Etiological factors from a central cognitive theory of depression, the Hopelessness Theory (Abramson et al. Psychological Review, 96, 358-372, 1989), were examined to evaluate whether a negative inferential style about cause, consequence, and self interacted with stressors over time to predict prospective elevations in depressive symptoms specifically compared with typically co-occurring symptoms. Negative inferential style was assessed at baseline in a sample of early and middle adolescents (N = 350, sixth to tenth graders). Measures of general depressive, anhedonic depressive, anxious arousal, general internalizing, and externalizing symptoms and occurrence of stressors were assessed at four time points over a 5-month period. Results using hierarchical linear modeling show that a negative inferential style interacted with negative events to predict prospective symptoms of general and anhedonic depression specifically but not anxious arousal, general internalizing or externalizing symptoms. Negative events predicted prospective elevations of symptoms of anxious arousal, internalizing, and externalizing problems.     

A randomized clinical trial of Behavioral Activation (BA) therapy for improving psychological and physical health in dementia caregivers: Results of the Pleasant Events Program (PEP)

Dementia caregiving is associated with elevations in depressive symptoms and increased risk for cardiovascular diseases (CVD). This study evaluated the efficacy of the Pleasant Events Program (PEP), a 6-week Behavioral Activation intervention designed to reduce CVD risk and depressive symptoms in caregivers. One hundred dementia family caregivers were randomized to either the 6-week PEP intervention (N = 49) or a time-equivalent Information-Support (IS) control condition (N = 51). Assessments were completed pre- and post-intervention and at 1-year follow-up. Biological assessments included CVD risk markers Interleukin-6 (IL-6) and D-dimer. Psychosocial outcomes included depressive symptoms, positive affect, and negative affect. Participants receiving the PEP intervention had significantly greater reductions in IL-6 (p = .040), depressive symptoms (p = .039), and negative affect (p = .021) from pre- to post-treatment. For IL-6, clinically significant improvement was observed in 20.0% of PEP participants and 6.5% of IS participants. For depressive symptoms, clinically significant improvement was found for 32.7% of PEP vs 11.8% of IS participants. Group differences in change from baseline to 1-year follow-up were non-significant for all outcomes. The PEP program decreased depression and improved a measure of physiological health in older dementia caregivers. Future research should examine the efficacy of PEP for improving other CVD biomarkers and seek to sustain the intervention's effects.     

Parent Emotion Expression and Autonomic-Linked Emotion Dysregulation in Childhood ADHD

Despite evidence that ADHD is associated with disruptions in emotion regulation, few studies have examined the biological correlates of emotion dysregulation among children with this disorder. Prior work has pointed to roles of the parasympathetic and sympathetic nervous system, as indexed via respiratory sinus arrhythmia (RSA) and cardiac pre-ejection period (PEP), respectively. Work in typically developing populations suggests that parenting behavior and parental emotion expression may shape the development of these systems. To date, a single study has examined the independent and interactive roles of autonomic nervous system functioning and parent emotion expression in youth with ADHD. This study seeks to extend that work. 86 children (42 with ADHD), aged 8–12 years, and a parent completed a parent-child interaction task, while electrocardiography and impedance cardiography data were recorded to derive RSA and PEP. Parent and child emotion word use (positive and negative valence) were coded from recordings of the task. Parents of youth with ADHD used fewer positive emotion words throughout the task. Additionally, throughout the task, children with ADHD engaged in excessive RSA withdrawal from baseline. Further, the association between RSA reactivity and ADHD diagnosis was moderated by parent positive emotion word use. Specifically, those with RSA augmentation and parents displaying high positive affect across the task conditions were least likely to have an ADHD diagnosis. If replicated and extended, these results support the use of interventions specifically designed to increase parental modeling of positive emotions, while simultaneously focusing on building emotion regulation skills in youth with ADHD.     

Smiles make it easier and so do frowns: masked affective stimuli influence mental effort

Two experiments tested the hypothesis that exposure to masked emotional expressions during the performance of cognitive tasks influences effort mobilization. In support of the predictions, participants who processed masked sad faces during task performance under "do your best" instructions showed stronger sympathetic nervous system discharge to the heart (shorter pre-ejection period, higher systolic blood pressure) than participants who were exposed to masked smiling faces or angry faces. Assessed task appraisals suggest that these effects on effort-related cardiovascular reactivity occurred because the masked emotional stimuli influenced the level of experienced task difficulty. The findings are compatible with the effects of consciously experienced affect on effort-related cardiovascular response.     

Self-reported inability to cry as a symptom of anhedonic depression in outpatients with a major depressive disorder

To ascertain whether self-reported inability to cry would be associated with symptoms of anhedonic depression, the 21-item Beck Depression Inventory-II was administered to 1,050 outpatients diagnosed with a DSM-IV-TR major depressive disorder. 219 (21%) patients reported on the BDI-II Crying item that they were unable to cry, and 831 (79%) patients reported they were able to cry. Only BDI-II Loss of Interest was significantly associated with the inability to cry after the other BDI-II symptoms were controlled for using a multiple logistic-regression analysis. The inability to cry was discussed as an indicator of anhedonic depression.     

青少年抑郁的快感缺失的神经机制研究

抑郁逐渐低龄化使得青少年抑郁备受关注。快感缺失,作为抑郁的一种核心临床症状,已成为抑郁最具前景的内表型之一。然而,青少年抑郁的快感缺失的神经机制迄今仍不清楚。本研究首先汇总两种神经机制模型即三元模型和社会挫折模型;其次,在多种奖励加工如金钱奖励、努力动机奖励、未来奖励和社会奖励条件下,概述青少年抑郁的快感缺失的神经机制前沿进展。未来可以深入探索努力动机奖励和未来奖励在预测青少年抑郁中的作用,加强研究青春期阶段与性别是如何交互影响早期抑郁快感缺失,将无创伤电磁刺激应用于青少年抑郁干预中,进一步澄清青少年抑郁的快感缺失的神经发展机制。     

Disinhibitory psychopathology in male adolescents: discriminating conduct disorder from attention-deficit/hyperactivity disorder through concurrent assessment of multiple autonomic states.

T. P. Beauchaine recently proposed a model of autonomic nervous system functioning that predicts divergent patterns of psychophysiological responding across disorders of disinhibition. This model was tested by comparing groups of male adolescents with attention-deficit/hyperactivity disorder (ADHD) and attention-deficit/hyperactivity disorder plus conduct disorder (CD/ADHD) with controls while performing a repetitive motor task in which rewards were administered and removed across trials. Participants then watched a videotaped peer conflict. Electrodermal responding (EDR), cardiac pre-ejection period (PEP), and respiratory sinus arrhythmia (RSA) were monitored. Compared with controls, the ADHD and CD/ADHD participants exhibited reduced EDR. The CD/ADHD group was differentiated from the ADHD and control groups on PEP and from the control group on RSA. Findings are discussed in terms of the motivational and regulational systems indexed. Implications for understanding rates of comorbidity between CD and ADHD are considered.     

Developmental trajectories of delinquency symptoms in childhood: the role of marital conflict and autonomic nervous system activity

Trajectories of delinquency symptoms across middle and late childhood were examined through latent growth modeling, with a focus on the role of interactions among parental marital conflict, child sex, and multiple indices (baseline, reactivity) of either parasympathetic nervous system activity, indexed by respiratory sinus arrhythmia (RSA), or sympathetic nervous system activity, indexed by skin conductance level (SCL), as predictors of growth. At Time 1, 128 girls and 123 boys (mean age = 8.23 yrs ± 0.73) and their parents participated. The sample comprised 64% European American and 36% African American children. Families participated in second and third waves of data collection with a 1-year lag between each wave. Interactions among marital conflict, sex, baseline RSA, and RSA reactivity from baseline to a frustrating lab task were significant predictors of growth in delinquent behavior from age 8 to age 10, with overall patterns indicating increasing symptoms for boys who lived in high-conflict homes and had an RSA response profile comprising lower RSA during the baseline and RSA augmentation (increase from baseline to the frustrating task). Furthermore, increases in delinquency symptoms over time were observed for children from high-conflict homes and with an SCL profile characterized by higher baseline levels and lower reactivity (less pronounced SCL increases from baseline) to the frustrating task. Findings highlight the importance of contemporaneous assessments of resting and reactivity levels when examining relations among the environment, physiological functioning, and psychopathology. Results are discussed in the context of interactions between biology and environment as relevant to the development of psychopathology.     

Party Pooper or Life of the Party: Dampening and Enhancing of Positive Affect in a Peer Context

Dampening and enhancing responses to positive affect have been linked to depressive symptoms. The main aim of the present study was to examine such responses in an interpersonal peer context and to examine their relation with depressive symptoms. A community sample of 665 seventh-graders (52.0% girls, Mage = 12.7 years) took part in the study. Using a newly developed questionnaire, the Co-Dampening and Co-Enhancing Questionnaire (CoDEQ), a two-factor model distinguishing co-dampening and co-enhancing was validated. Relations with general depressive symptoms, anhedonic symptoms, and friendship quality were investigated. The direction of relations was examined over a 1-year interval using cross-lagged analyses. Cross-sectional results revealed that higher levels of co-dampening and lower levels of co-enhancing were associated with more depressive and anhedonic symptoms, while controlling for co-rumination levels. For anhedonic symptoms, this pattern also held over and above intrapersonal dampening and enhancing. Friendship quality was related to higher concurrent levels of co-enhancing and lower levels of co-dampening. The longitudinal results pointed towards a scar model, in that both depressive and anhedonic symptoms predicted relative increases in co-dampening over time; however, this did not hold in a model in which dampening and enhancing were included as control variables.