Local and global effects of motivation on cognitive control

Motivation has been found to enhance cognitive control, but the mechanisms by which this occurs are still poorly understood. Cued motivational incentives (e.g., monetary rewards) can modulate cognitive processing locally??that is, on a trial-by-trial basis (incentive cue effect). Recently, motivational incentives have also been found to produce more global and tonic changes in performance, as evidenced by performance benefits on nonincentive trials occurring within incentive blocks (incentive context effect). In two experiments involving incentivized cued task switching, we provide systematic evidence that the two effects are dissociable. Through behavioral, diffusion-modeling, and individual-differences analyses, we found dissociations between local and global motivational effects that were linked to specific properties of the incentive signals (i.e., timing), while also ruling out alternative interpretations (e.g., practice and speed??accuracy trade-off effects). These results provide important clues regarding the neural mechanisms by which motivation exerts both global and local influences on cognitive control.     

Deflecting negative self-relevant stereotype activation: The effects of individuation

Under stereotype threat, when an individual risks confirming a negative self-relevant stereotype, activation of the stereotype can inhibit performance on a subsequent, related task. Although a significant amount of research has been devoted to examining the effects of stereotype activation on performance, relatively little is known about successful methods of intervention. Two experiments tested the hypothesis that individuation prior to performance would eliminate impairment due to stereotype activation. In both studies, Caucasian female participants in either a gender-prime or no-prime condition were administered a mathematics test. Gender primed, individuated participants outperformed gender primed, non-individuated participants and performed as well as unprimed, non-individuated (i.e., control) participants, supporting individuation as a protective measure against the detrimental effects of negative stereotype activation.     

刻板印象激活的行为效应

刻板印象激活的行为效应是指刻板印象激活后个体所产生的行为变化。本文介绍了西方关于刻板印象激活的行为效应的两种主要机制,即刻板印象威胁理论和观念运动理论,并对两种理论进行了分析和比较。     

Dissociable influences of reward motivation and positive emotion on cognitive control

It is becoming increasingly appreciated that affective and/or motivational influences contribute strongly to goal-oriented cognition and behavior. An unresolved question is whether emotional manipulations (i.e., direct induction of affectively valenced subjective experience) and motivational manipulations (e.g., delivery of performance-contingent rewards and punishments) have similar or distinct effects on cognitive control. Prior work has suggested that reward motivation can reliably enhance a proactive mode of cognitive control, whereas other evidence is suggestive that positive emotion improves cognitive flexibility, but reduces proactive control. However, a limitation of the prior research is that reward motivation and positive emotion have largely been studied independently. Here, we directly compared the effects of positive emotion and reward motivation on cognitive control with a tightly matched, within-subjects design, using the AX-continuous performance task paradigm, which allows for relative measurement of proactive versus reactive cognitive control. High-resolution pupillometry was employed as a secondary measure of cognitive dynamics during task performance. Robust increases in behavioral and pupillometric indices of proactive control were observed with reward motivation. The effects of positive emotion were much weaker, but if anything, also reflected enhancement of proactive control, a pattern that diverges from some prior findings. These results indicate that reward motivation has robust influences on cognitive control, while also highlighting the complexity and heterogeneity of positive-emotion effects. The findings are discussed in terms of potential neurobiological mechanisms.     

Motivational Systems and Stress-Related Cardiovascular Reactivity

This study examined the relation of motivational systems to patterns of autonomic responses to stress. Specifically, we examined patterns of physiological response resulting from differential activation of motivational systems for behavioral approach and behavioral inhibition. We also examined the relation of these motivational systems to threat and challenge responses to potential stress. Self-report, cardiac measures (i.e., pre-injection period, or PEP, and heart rate, or HR), and blood pressure (i.e., systolic blood pressure, or SBP, and diastolic blood pressure, or DBP) measures reliably distinguished between an experimental condition facilitating behavioral approach and an experimental condition facilitating coactivation of behavioral approach and behavioral inhibition systems. Vascular (e.g., total peripheral resistance, or TPR) and electrodermal (e.g., electrodermal response, or EDR) measures, however, did not vary by condition. We discuss the results in relation to other research on motivational factors as they relate to stress and cardiovascular reactivity.     

When “Just Say No” is not enough: Affirmation versus negation training and the reduction of automatic stereotype activation

Previous research has shown that extended training in non-stereotypic responding (i.e., negating stereotypes and affirming counterstereotypes) can reduce automatic stereotype activation. In the present research, we claim that the effects of non-stereotypic association training on automatic stereotype activation are primarily driven by the affirmation of counterstereotypes rather than by the negation of stereotypes. In two experiments, participants received extensive training in either (a) negating stereotype-congruent information or (b) affirming stereotype-incongruent information, and then completed a measure of automatic stereotyping (Experiment 1) or automatic evaluation (Experiment 2). Consistent with our predictions, only training in the affirmation of counterstereotypes led to a reduction in the activation of stereotypes and negative evaluations. In contrast, extended training in the negation of stereotypes enhanced rather than reduced the activation of stereotypes and negative evaluations. Implications for prejudice and stereotype control are discussed.     

Application of a behavioral theory of motivation to the concepts of anxiety and impulsivity

Gray's model has been employed in attempts to formulate theories concerning the processes underlying various types of psychopathology. In the most direct application of his model, the dominant mood is assumed to reflect the strength of the underlying motivational system—i.e., strong anxiety with a strong behavioral inhibition system (BIS), strong positive affect with a strong behavioral activation system (BAS). This approach would predict strong anxiety to be associated with a dominance of passive avoidance and extinction and, similarly, strong positive affect with a dominance of impulsivity and other approach behaviors.The present paper has argued that these expectations are based on an implicit assumption that equally stressful environments are encountered—an assumption that would be undermined by individual differences in the very motivational systems under consideration. Examination of the approach-avoidance conflict paradigm supported the argument that, at least in the case of anxiety, one should not expect a strong association between behavior and motivational states. In particular, a weak behavioral inhibition system or strong behavioral activation system is likely to facilitate anxiety-producing impulsive behavior, whereas a strong behavioral inhibition system or weak behavioral activation system may facilitate anxiety-reducing cautious behavior. Other factors were also thought to promote independence of affective states and behavioral traits across individuals.On this argument, trait anxiety conceptualized as resulting from a strong BIS may not be highly correlated with frequent anxiety. Stating this another way, the behavioral correlates of a dominant BIS may be relatively independent of a trait involving a dominance of anxious mood. Using Tellegen's (1985) discussion of self-report measures of mood and personality traits, it was proposed that the trait factor of Constraint may be more strongly associated with behavioral consequences of the BAS and BIS, whereas the Negative Emotionality dimension is largely unrelated to the behavioral effects of the BIS. Since Negative Emotionality corresponds to the traditional anxiety/neuroticism factor, this proposal differs from the customary assumptions about the alignment of Gray's motivational systems and personality traits. The personality trait of Positive Emotionality (cf. extraversion) may be associated with individual differences in the strength of the BAS, with both affective and behavioral components. Thus, the hypothesis of motivational-behavioral uncoupling offers an alternative to the usual intepretations of the three major dimensions seen in most personality inventories. Unfortunately, it remains unclear as to how well the three major personality traits (Positive Emotionality, Negative Emotionality, and Constraint) are aligned with the hypothesized underlying motivational dimensions, and any hypotheses must be seen as extremely tentative.Finally, the question of the validity of self-report measures was discussed briefly. Of greatest interest is the possibility that a subset of subjects are unable to accurately report their emotional states, and that methods are available for identifying these individuals. If so, the validity of these self-report measures may be significantly improved, facilitating research on anxiety and impulsivity.     

An Examination of Implicitly Activated,Explicitly Activated,and Nullified Stereotypes on Mathematical Performance: It's Not Just a Woman's Issue

This study was designed to examine the different ways that stereotypes might become activated in testing situations and the effects this activation has on task performance. In Experiment 1, women undergraduates exposed to an explicitly activated stereotype (i.e., told men outperform women in mathematics) performed worse than women exposed to a nullified stereotype (i.e., told men and women perform at the same level in mathematics). The stereotype threat also was activated implicitly under normal conditions (i.e., just given the test with nothing else stated) such that performance in this condition was at the same (low) level as the explicitly activated threat. In Experiment 2, the results were replicated with White male undergraduates using the stereotype that Asians are better than Whites in mathematics. In addition, in a small field survey we found that this belief about ethnicity did occur spontaneously for White men in college calculus courses. Taken together, the results of these studies suggest that even under normal circumstances, math test situations may lead to nonoptimal performance for both stigmatized (women) and traditionally nonstigmatized (White men) group members. Implications for threat nullification techniques are discussed.     

Reward anticipation enhances brain activation during response inhibition

The chance to achieve a reward starts up the required neurobehavioral mechanisms to adapt our thoughts and actions in order to accomplish our objective. However, reward does not equally reinforce everybody but depends on interindividual motivational dispositions. Thus, immediate reward contingencies can modulate the cognitive process required for goal achievement, while individual differences in personality can affect this modulation. We aimed to test the interaction between inhibition-related brain response and motivational processing in a stop signal task by reward anticipation and whether individual differences in sensitivity to reward (SR) modulate such interaction. We analyzed the cognitive–motivational interaction between the brain pattern activation of the regions involved in correct and incorrect response inhibition and the association between such brain activations and SR scores. We also analyzed the behavioral effects of reward on both reaction times for the “go” trials before and after correct and incorrect inhibition in order to test error prediction performance and postinhibition adjustment. Our results show enhanced activation during response inhibition under reward contingencies in frontal, parietal, and subcortical areas. Moreover, activation of the right insula and the left putamen positively correlates with the SR scores. Finally, the possibility of reward outcome affects not only response inhibition performance (e.g., reducing stop signal reaction time), but also error prediction performance and postinhibition adjustment. Therefore, reward contingencies improve behavioral performance and enhance brain activation during response inhibition, and SR is related to brain activation. Our results suggest the conditions and factors that subserve cognitive control strategies in cognitive motivational interactions during response inhibition.     

A question of honor: Chief Wahoo and American Indian stereotype activation among a university based sample

For over 30 years, a debate has raged regarding the appropriateness of high school, university, and professional sports teams using American Indian mascots. Proponents of such mascots state that these images are traditions and honor Indigenous People. Opponents of these images argue that the symbols foster stereotypes (Pewewardy, 1999) and negatively affect American Indians (Fryberg, Markus, Oyserman, & Stone, 2008). The purpose of this investigation was to examine if exposure to an American Indian mascot activated American Indian stereotypes in a predominately European American sample. In addition, we explored the role of personal motivation, prejudice level, and experience on stereotype activation. We found that the Chief Wahoo image (i.e., Cleveland Indian's logo) compared to other images activated negative, but not positive, American Indian stereotypes. Participants' motivation to control prejudice, prejudice level, and experience did not predict negative stereotype activation. Limitations and directions for future research are discussed.     

« Femmes au volant,danger au tournant » Les conductrices sont-elles victimes d’une menace de stéréotype ?

Owing to the sexuation of occupations associating technical attributes with men and relational skills with women, the latter are less numerous in professions where driving is involved. The negative stereotype associating women with poor driving skills is thus likely to have a cognitive and behavioral impact. According to the model of the stereotype threat, could activation of the threat inhibit the performance of women in a Highway Code test? After performing an association task that demonstrated a largely negative stereotype, 56 female students took a Highway Code test in two conditions: an experimental condition where the stereotype was activated by a comparison between men and women (N = 17); and a control condition without activation (N = 39). Subjects performed less well in the experimental condition, demonstrating the expected effects of the stereotype threat.     

Different brain mechanisms between stereotype activation and application: evidence from an ERP study

Stereotyping involves two processes in which first, social stereotypes are activated (stereotype activation), and then, stereotypes are applied to given targets (stereotype application). Previous behavioral studies have suggested that these two processes are independent of each other and may have different mechanisms. As few psychophysiological studies have given an integrated account of these stages in stereotyping so far, this study utilized a trait categorization task in which event-related potentials (ERPs) were used to explore the brain mechanisms associated with the processes of stereotype activation and its application. The behavioral (reaction time) and electrophysiological data showed that stereotype activation and application were elicited respectively in an affective valence identification subtask and in a semantic content judgment subtask. The electrophysiological results indicated that the categorization processes involved in stereotype activation to quickly identify stereotypic and nonstereotypic information were quite different from those involved in the application. During the process of stereotype activation, a P2 and N2 effect was observed, indicating that stereotype activation might be facilitated by an early attentional bias. Also, a late positive potential (LPP) was elicited, suggesting that social expectancy violation might be involved. During the process of the stereotype application, electrophysiological data showed a P2 and P3 effect, indicating that stereotype application might be related to the rapid social knowledge identification in semantic representation and thus may be associated with an updating of existing stereotypic contents or a motivation to resolve the inconsistent information. This research strongly suggested that different mechanisms are involved in the stereotype activation and application processes.     

Origins of Order in Joint Activity and Social Behavior

How should we understand the origins of order and control that entail the systematic regularity of human behavior? Here, we address this question with respect to joint activity and social behavior via an explication of Guy Van Orden's formulation of interaction-dominant dynamics and his provocative discussion of the “blue collar brain.” Using these 2 concepts we argue that human social behavior and performance is not controlled by a cascade of fast timescale activity (i.e., neural processes or individual action) but rather emerges from the modulated enslavement of faster timescale processes by much slower dynamical processes, such as shared task outcomes and socially defined historical context. We detail this argument by reviewing 2 recent behavioral findings that we believe provide evidence that the dynamics of human performance during a socially situated activity is interaction dominant. The first concerns the behavioral coordination that emerges during a novel joint-action collision-avoidance task. The second concerns the effects of stereotype threat on an individual's cognitive performance. Finally, we discuss how identifying the role that the slower timescale dynamics of social events and structures plays in shaping complex behavioral dynamics can guide future research on joint-action and human performance.     

自我效能感和认知风格对刻板印象激活效应的影响

通过两个实验考察了自我效能感与认知风格在刻板印象激活效应(个体刻板印象的激活会影响个体随后的行为表现,使之符合所激活的刻板印象)中的作用,初步探讨了刻板印象的激活引发行为改变的内在心理机制。实验1采取单因素被试间实验设计,将被试随机分配到实验组和控制组,接着完成智力测试与自我效能感评价任务。结果发现自我效能感在刻板印象激活效应对于智力测试成绩的影响中起着中介作用。在此基础上,实验2进一步纳入认知风格,首先对被试的握力进行前测,1周后再将被试随机分配到高耐力组和低耐力组进行再测。结果表明:自我效能感在刻板印象激活引发的行为表现中依然起着中介作用。与此同时,虽然场依存的被试更易受刻板印象激活效应的影响,而场独立的被试则不易受到这种情境的影响,但是认知风格未起到中介作用。     

Predicting Stereotype Threat,Test Anxiety,and Cognitive Ability Test Performance: An Examination of Three Models

As the classroom and workplace, among other contexts, become more diverse in their population characteristics, the need to be aware of specific factors impacting testing outcome issues correspondingly increases. The focus in this study, among other purposes, was to identify possible interactions between examinee's individual-difference characteristics (e.g., personality) and characteristics of the testing environment on test anxiety reactions and cognitive ability test performance. This study assessed reactions and performance in 4 different testing conditions through a path-analytic testing of 3 well-established theoretical models of stress appraisal and coping (i.e., cognitive appraisal, personality trait, and transactional). The transactional model, incorporating both personality and testing condition factors, was best in predicting the variance associated with the cognitive ability test scores, the 3 test anxiety score indexes (i.e., social derogation, physical tenseness, and cognitive obstruction), and the stereotype threat scores. With personality traits, for example, agreeableness was a relatively strong and consistent predictor of all study measures. Regarding testing condition factors, only the manipulation of stereotype threat level (low or high) produced some significant accounting of variance. Higher perceived stereotype threat levels were generally associated with heightened stereotype threat belief perceptions, lower cognitive ability test scores, and, interestingly, reduced feelings of cognitive obstruction in test anxiety.     

A comparison of mean partialing and dual-hypothesis testing to evaluate stereotype effects when assessing profile similarity

Assessing profile similarity is an important task in research and clinical practice, but conclusions about profile similarity may be confounded by stereotype effects that create artificially similar profiles. In this article, we review the impact of stereotype effects on profile similarity and a conventional approach to addressing this confound (i.e., mean partialing). We argue that a dual-hypothesis testing approach distinguishing the no-effect null hypothesis (i.e., is the observed similarity different from zero?) from the chance-effect null hypothesis (i.e., is the observed similarity different from chance given the distribution of profile elements?) can provide a more nuanced understanding of profile similarity. To compare results from these 2 perspectives, we analyzed data from 2 samples using within-persons correlations as indexes of similar profile shapes. Results indicated that a dual-hypothesis testing approach led to more conservative conclusions about profile similarity (i.e., fewer Type 1 errors) than mean partialing and may be especially valuable when dealing with moderate-sized stereotype effects. Both approaches led to identical conclusions when stereotype effects were largest. Conclusions emphasize the relative merits and limitations of the dual-hypothesis testing approach as well as potential future applications in the personality assessment domain.     

Gender Stereotype Activation versus Lexical Semantic Activation: An ERP Study

It is an open question whether social stereotype activation can be distinguished from nonsocial semantic activation. To address this question, gender stereotype activation (GSA) and lexical semantic activation (LSA) were directly compared. EEGs were recorded in 20 participants as they identified the congruence between prime-target word pairs under four different conditions (stereotype congruent, stereotype incongruent, semantic congruent, and semantic incongruent). We found that congruent targets elicited faster and more accurate responses and reduced N400 amplitudes irrespective of priming category types. The N400 congruency effect (i.e., the difference between incongruity and congruity) started earlier and had greater amplitude for GSA than for LSA. Moreover, gender category priming induced a smaller N400 and a larger P600 than lexical category priming. These findings suggest that the brain is not only sensitive to both stereotype and semantic violation in the post-perceptual processing stage but can also differentiate these two information processes. Further, the findings suggest superior processing (i.e., faster and deeper processing) when the words are associated with social category and convey stereotype knowledge.     

Self-Control and the Self-Regulation of Dieting Decisions: The Role of Prefactual Attitudes,Subjective Norms,and Resistance to Temptation

This article investigates cognitive and motivational decision processes in the pursuit of dieting goals and implements the theory of trying in a field study. The theory of trying is an extension of the theory of planned behavior and investigates the effects on intentions of (a) 3 prefactual attitudes (attitudes toward success, failure, and the process of goal striving), (b) subjective norms, and (c) perceived behavioral control (i.e., resistance to temptation). Dieting decisions of 609 adult women were studied. Perceived behavioral control in the form of resistance to temptation was found to interact with subjective norms to influence intentions, and the 3 forms of prefactual attitudes had additive effects on intentions.