Intelligence and Extraversion in the neural evaluation of delayed rewards

Temporal discounting (TD), the preference for earlier, smaller rewards over delayed, larger rewards, is a pervasive phenomenon that covaries with Big Five personality traits and Intelligence (IQ). This study provides novel insight by identifying correlates for IQ and Extraversion in the neural representation of TD preferences. An intertemporal choice task was employed, where offers were sequentially presented, distinguishing between one evaluation phase (first offer is presented) and one comparison phase (second offer is presented and values are compared). IQ correlated with responses of caudate nucleus to the subjective values of the offers, suggesting a role of cognitive abilities in modulating reward responses. Extraversion correlated with the strength of functional connectivity of a reward evaluation network centered on ventromedial prefrontal cortex.     

Haptic modality takes its time: Dynamic of activations of sensory modalities in perceptual and memory processes

Based on claims resulting from grounded cognition theory that perceptual and memory processes are using the same distributed systems, the present study investigated the temporal aspect of access to memory traces through haptic and auditory modalities. Unlike in the case of visual or auditory components, the perception of a vibrotactile component is more sequential in nature and therefore cannot be fully processed before the end of the signal. The present study explores the dynamic of components activation in a situation of audio‐vibrotactile asynchrony. We used a short‐term priming paradigm consisting of an association phase (between a vibration and sound) and a test phase testing priming effect of a vibrotactile stimulation on the processing of a target sound. Results showed an interference with a simultaneous processing and a facilitation with a sequential processing. The temporality process of perceptual components is also important at a memory level.     

Knowledge and quality-management activities’ influences on technology communication and innovation with African foreign investment experience

We examined how psychic distance moderates the association of South Korean chief executive officers’ (CEOs’) knowledge and quality management with their predisposition to invest in African technology and innovation markets. Participants were current and prospective South Korean African business investment senior managers (n = 64; 20 females; mean years in management = 19.4) or not (n = 187; 97 females, mean years in management = 15.9). Hierarchical regression analysis was used to analyse the relationships. Only quality management was significantly related to technology commercialisation capabilities and innovation performance among managers with African investment experience. However, both quality and knowledge management were significantly related to the outcomes among managers without African investment experience. The effect of psychic distance might be explained by risk averseness, in that those without experience of African investment might be with more risk avoidant than those with such experience.     

Self-prospection and energization: The joint influence of time distance and consideration of future consequences

The way people envision their future (self-prospection) plays a key role in the energization required to pursue desired goals. We proposed that energization is determined by time distance from the imagined future-self and the individual’s consideration of future consequences (CFC). We hypothesized that, when imagining their distant (vs. near) future-self, individuals higher on CFC (i.e., those who construe a stronger link between present and future selves), would report greater energization. Participants completed the CFC scale, imagined their distant or near future-self, and reported their energy level. Imagining distant (vs. near) future-self fostered energy among participants higher on CFC (Experiments 1–2), an effect mediated by vividness of self-representations (Experiment 2). Self-prospection has implications for current states, and specifically for felt energy.     

时间参照对绿色消费的影响：环保意识和产品环境怀疑的调节作用

绿色消费虽然受到越来越多的关注,但消费者的绿色承诺很难转化为实际的购买行为,出现了消费者的不作为现象。本研究试图探讨时间参照对消费者不作为的影响以及环保意识是否能够有效抑制这种不作为。研究发现,消费者在近期情境下对绿色产品的购买意愿低于远期,出现了绿色消费不作为现象,即个体更倾向于在将来而不是现在购买绿色产品。尤为重要的是,环保意识对消费者不作为的弱化作用受制于个体的产品环境怀疑：产品坏境怀疑较低时环保意识的弱化作用明显,而产品环境怀疑较高时环保意识的弱化作用则不存在。     

基于选项层面的认知诊断非参数方法

充分挖掘选择题(Multiple-Choice, MC)的诊断信息受到了较多关注, 将干扰项信息考虑在内可以提升诊断精度。为了弥补参数模型基于大样本才能获得可靠估计的不足, 以及适用于班级水平的小样本诊断测验情境, 本研究提出了非参数的多选题诊断方法。模拟和实证研结果表明：(1)当MC测验中题目参数不存在较大差异时, ${{d}_{\text{ph}-\text{MC}}}$法在多数情况下表现优于参数类诊断模型。(2)当MC测验中题目参数存在较大差异时, ${{d}_{ph-MC}}$法的表现最优。(3)实证研究中非参数方法和参数类模型的分类一致性程度较高, ${{d}_{\text{ph}-\text{MC}}}$距离法估计得到的考生属性总体掌握程度与总分相关最高。最后, 基于MC诊断测验的特点提出了若干研究方向。     

心理长度对二年级儿童数字线估计表征的影响

从心理长度的角度探讨二年级儿童在0~100和0~1000数字范围存在不同表征方式的原因。实验一要求二年级儿童完成长度均为10cm,范围分别为0~100和0~1000的数字线估计任务。实验二要求儿童对长度分别为10cm和18cm,范围均为0~1000的数字线进行估计。结果发现在两个实验中二年级儿童的估计均存在心理长度,但与以往研究的一年级儿童相比,心理长度的范围有所缩小。随着数字范围的增大或长度的减小,儿童的表征方式出现了从线性表征向对数表征的转变趋势。这些结果表明不精确的表征方式可能与心理长度策略的使用有关,心理长度在一定程度上影响了二年级儿童的估计表征方式。     

Examining differences in minority versus majority preschoolers on social categorization and perceived intergroup distance

We examined the differences between majority and minority children (i.e., group membership) on racial categorization and perceived cultural distance, among 4‐ to 6‐year‐old children, in low diversified schools. We used a spontaneous social categorization task using pictures of children from three different racial groups broadly represented in France (Europeans, Black‐, and North‐Africans), and an evaluation of the perceived cultural distance between participants' in‐group and the racial group represented in the picture, adapted to children and based on three factors (language, eating habits, and music). Results revealed an effect of age on racial categorization: the older the children, the more successful they are in this task. They showed a significant effect of the racial group represented in the photos on perceived cultural distance: members of minority groups (i.e., Black‐ and North‐Africans) were evaluated as more different compared to those of the majority group on each of the factors. Finally, we got an interaction between participants' in‐group and the racial group represented in the pictures, for the language factor: members of the majority group perceived as more different photographs representing minorities peers than those representing majority peers, while participants belonging to minority groups perceived no differences between photographs, according to the racial criteria.     

Age effects on the control of dynamic balance during step adjustments under temporal constraints

This study investigated the age effects on the control of dynamic balance during step adjustments under temporal constraints. Fifteen young adults and 14 older adults avoided a virtual white planar obstacle by lengthening or shortening their steps under free or constrained conditions. In the anterior–posterior direction, older adults demonstrated significantly decreased center of mass velocity at the swing foot contact under temporal constraints. Additionally, the distances between the ‘extrapolated center of mass’ position and base of support at the swing foot contact were greater in older adults than young adults. In the mediolateral direction, center of mass displacement was significantly increased in older adults compared with young adults. Consequently, older adults showed a significantly increased step width at the swing foot contact in the constraint condition. Overall, these data suggest that older adults demonstrate a conservative strategy to maintain anterior–posterior stability. By contrast, although older adults are able to modulate their step width to maintain mediolateral dynamic balance, age-related changes in mediolateral balance control under temporal constraints may increase the risk of falls in the lateral direction during obstacle negotiation.     

领导-成员交换与情绪枯竭:互惠信念和权力距离导向的作用

结合社会交换理论和角色理论,领导-成员交换关系中下属的回报不仅受到互惠规范的约束,还受到上下级关系权力不对称的影响。因此,将探索互惠信念和权力距离导向单独及交互项对领导-成员交换与情绪枯竭关系的调节作用。采用两个时间点172名员工的匹配数据,运用层级回归对假设进行了检验。结果表明,领导-成员交换(T1)与情绪枯竭(T2)总体上呈显著负向关系。互惠信念(T1)和权力距离导向(T1)单独对领导-成员交换与情绪枯竭关系的调节作用并不显著,但是二者的交互项的调节作用显著。即,领导-成员交换、互惠信念和权力距离导向对情绪枯竭有显著三维交互作用。具体的,高互惠信念和低权力距离导向的员工,领导-成员交换与情绪枯竭呈显著正向关系;高互惠信念和高权力距离导向的员工,领导-成员交换与情绪枯竭呈显著负向关系。研究验证了领导-成员交换过程中互惠规范的作用,表明互惠规范的适用性受到上下级关系特征的影响。