The modality effect of ego depletion: Auditory task modality reduces ego depletion

An initial act of self‐control that impairs subsequent acts of self‐control is called ego depletion. The ego depletion phenomenon has been observed consistently. The modality effect refers to the effect of the presentation modality on the processing of stimuli. The modality effect was also robustly found in a large body of research. However, no study to date has examined the modality effects of ego depletion. This issue was addressed in the current study. In Experiment 1, after all participants completed a handgrip task, one group's participants completed a visual attention regulation task and the other group's participants completed an auditory attention regulation task, and then all participants again completed a handgrip task. The ego depletion phenomenon was observed in both the visual and the auditory attention regulation task. Moreover, participants who completed the visual task performed worse on the handgrip task than participants who completed the auditory task, which indicated that there was high ego depletion in the visual task condition. In Experiment 2, participants completed an initial task that either did or did not deplete self‐control resources, and then they completed a second visual or auditory attention control task. The results indicated that depleted participants performed better on the auditory attention control task than the visual attention control task. These findings suggest that altering task modality may reduce ego depletion.     

The sweetness of surrender: Glucose enhances self-control by signaling environmental richness

According to the ego-depletion account of loss of self-control, self-control is, or depends on, a depletable resource. Advocates of this account have argued that what is depleted is actually glucose. However, there is experimental evidence that indicates that glucose replenishment is not necessary for regaining self-control, as well as theoretical reasons for thinking that it is not depleted by exercises of self-control. I suggest that glucose restores self-control not because it is a resource on which it relies, but because it serves as a signal of environment quality. I suggest that the evidence is better explained by a rival opportunity costs model of self-control than by the ego-depletion account.     

自我损耗：理论、影响因素及研究走向

自我的活动消耗心理能量后引起执行功能下降的过程称为自我损耗, 自我损耗是生活中诸多的适应不良现象的原因之一。近几年, 自我损耗理论在发生领域、损耗状态的时限和内在机制等方面均有所发展; 对自我损耗影响因素的探究主要集中于认知、情绪及人格特质等领域; 自我损耗后效的研究逐渐呈现出应用化的趋势。未来研究需要进一步探究自我损耗的机制, 对影响因素和损耗后效上存在的争议进行澄清, 并在测量工具上寻找突破以满足理论的发展需求。     

自我损耗的视听通道效应

采用双任务实验范式,通过两个实验探讨了自我损耗的通道效应。实验1考察了完成视听工作记忆任务对执行手柄任务（非视听任务）的影响,结果发现,完成视觉损耗任务导致手柄任务的成绩显著地变差,完成听觉损耗任务、视听非损耗任务均对手柄任务的成绩没有影响。实验2考察了完成视听工作记忆任务对执行Stroop任务（视觉任务）的影响,结果发现,完成视觉损耗任务导致Stroop任务的成绩显著地变差,完成听觉损耗任务、视听非损耗任务对Stroop任务的成绩没有影响。研究结果表明同一自我控制任务通过视听通道完成对随后另一自我控制任务的影响不同,证实了自我损耗的视听通道效应。     

自我损耗促进冒险行为

基于自我控制资源模型,本研究探讨了自我损耗对冒险行为的影响以及生理能量补充在其中的缓解作用。实验1和实验2分别通过“Stroop”和“非利手写作”任务操纵被试的自我损耗,两个实验均用气球模拟风险决策任务考察被试的冒险行为,并且通过摄入含有或不含有葡萄糖的柠檬水来操纵生理能量水平。结果发现,在排除无关变量后,高损耗者比低损耗者尽可能多地对气球进行充气以寻求奖赏(实验1和实验2),但饮用含葡萄糖的柠檬水能够有效降低这种反应(实验2)。该研究证实了自我损耗促进冒险行为,补充生理能量能有效缓解该效应。     

Self‐control depletion impairs goal maintenance: A meta‐analysis

Initial exertion of self‐control has been suggested to impair subsequent self‐regulatory performance. The specific cognitive processes that underlie this ego depletion effect have rarely been examined. Drawing on the dual‐process theory of executive control (Engle & Kane, 2004 ; Kane & Engle, 2003 ), the current meta‐analysis revealed that initial self‐control exertion impairs participants’ capacities of maintaining the task goal but its effect on capacities of resolving response competition is in need of further investigation. Our results are more consistent with recent theoretical views that consider ego depletion as a switch cost and a result arising from reduced motivation to engage in further self‐control.     

Lack of sleep and unethical conduct

We draw from the Ego Depletion model and research on sleep physiology to predict a relationship between lack of sleep and individuals’ unethical behavior. Laboratory studies showed that sleep quantity is positively related to self-control resources and negative associated with unethical behavior. In a cross-sectional field study examining unethical behavior in a variety of work settings, low levels of sleep, and low perceived quality of sleep, were both positively related to unethical behavior as rated by the supervisor, and cognitive fatigue mediated the influence of sleep quantity. In an experience sampling field study, we found similar effects within-individuals. We discuss the role of lost sleep in better understanding unethical behavior in organizations.     

Ego depletion by response exaggeration

Suppressing or inhibiting responses has a host of negative effects, including a temporary reduction in self-regulatory strength (ego depletion). Less attention has been given to response exaggeration, which should also deplete regulatory strength and therefore disrupt subsequent self-control. We tested the depletion hypothesis by having participants perform tests of cognitive fluency after exaggerating responses (or not) to a disgusting film clip. Response exaggeration produced increased emotional expression but did not increase subjective emotional experience. Moreover, exaggerating disgust reactions impaired subsequent performance on tests of cognitive fluency. The cognitive aftereffects of exaggeration were not attributable to emotional experience or to changes in sympathetic or parasympathetic arousal (as indicated by skin conductance and heart rate variability high frequency power, respectively). Poorer cognitive fluency after response exaggeration indicates a detrimental effect of purposeful self-regulation.     

Differentiating the effects of self-control and self-esteem on reactions to mortality salience

Whereas many previous studies suggest that self-esteem may buffer against the psychological threat of death, recent research has begun to suggest that self-control also may serve as a buffer. Two studies examined the possibility that dispositional self-control uniquely predicts responses to mortality salience, above and beyond self-esteem. In Study 1, an initial exercise in emotion regulation increased subsequent accessibility of death thoughts. In Study 2, mortality salience increased worldview defense. Both of these effects were moderated by dispositional self-control, such that the effects occurred among participants with low but not high self-control. More importantly, these moderating effects were observed over and above the moderating effects of self-esteem. Findings suggest that self-control may serve as an important and unique buffer against thoughts of death.