Inter-Definability of Horn Contraction and Horn Revision

There have been a number of publications in recent years on generalising the AGM paradigm to the Horn fragment of propositional logic. Most of them focused on adapting AGM contraction and revision to the Horn setting. It remains an open question whether the adapted Horn contraction and Horn revision are inter-definable as in the AGM case through the Levi and Harper identities. In this paper, we give a positive answer by providing methods for generating contraction and revision from their dual operations. Noticeably, we cannot apply the Levi and Harper identities directly in such methods as the Horn fragment does not fully support negation. To overcome this difficulty, a Horn approximation technique called Horn strengthening is used. We show that Horn contraction generated from Horn revision is always plausible whereas Horn revision generated from Horn contraction is, in general, implausible and, to regain plausibility, the generating contraction has to be properly restricted.     

The augment effect of negative affective background on positive stimulus: Two randomized controlled trials

Based on the affective endowment-contrast theory, negative affect (NA) is hypothesized to augment positive affect (PA). Study 1 examined this contrast effect (augment effect) in a laboratory setting. Participants (n?=?94) were assigned into positive, negative or neutral affective background conditions through false feedback procedure, and then a same positive stimulus was given to all participants. Results indicated that participants in negative condition experienced more feelings of PA and less NA after receiving the positive stimulus compared to the other two conditions. Study 2 investigated this augment effect under naturalistic context. Participants (n?=?150) were classified into high positive, high negative, or mild positive affective background groups based on their naturally occurred affects. Then a positive manipulation was giving to all participants. Results indicated that participants in the high negative group experienced the most decrease in feelings of NA after receiving the positive manipulation. Results from the two studies provided evidence to the endowment-contrast theory, indicating that the valance of positive stimulus was augmented under negative affective background.     

Resistance to Cultural Intervention: Formation of Inhibitory Collective and children’s Self-Defensive Regulation in a Chinese School

A sequel to the previous article “Roots of Excellence: The Releasing Effect of Individual Potentials through Educational Cultural Intervention in a Chinese School” (in press), the present study is on the unexpected reversal phenomena in the process of cultural intervention. The goal of the intervention is to construct the dynamics of Jiti (well-organized collective in Chinese) through creative activities to promote students’ development. In the intervention, the releasing effect (Wu et al. 2016) emerged as well, but the teacher’s concern about worsening discipline and academic performance evoked and reinforced his habitual notions and practices of education, turning the joint activities into a way of strengthening discipline. The energy that had been discharging at the beginning of the intervention was inhibited, so that many more problematic behaviors took shape. The whole class formed an inhibitory atmosphere, within which pupils formed self-defensive regulation strategies. By comparing with the productive collective in which intervention was effective and analyzing this unexpected reversal process, we can not only see pupils’ self-construction status in the inhibitory culture but illuminate the formation of the teacher’s resistance to educational and cultural transformation as well. Resistance is originated from teachers not being able to interpret pupils’ inner developmental needs but instead anxious about the ongoing problems.     

Regulatory mode and willingness to increase retirement savings contributions

This study examined how two self‐regulatory modes, locomotion and assessment, relate to the willingness to increase retirement savings. Locomotion is concerned with making things happen (“just do it”). Assessment is concerned with critical evaluation (“do the right thing”). We hypothesized that individuals who score high (vs. low) in locomotion, but not those who score high (vs. low) in assessment, would be more willing to increase their savings for retirement. In addition, because high (vs. low) assessment can lead to doing the right thing in terms of seeking to maximize economic returns, we hypothesized that combining high locomotion with high assessment would especially motivate willingness to increase retirement savings. We found support for both hypotheses from a survey of university employees.     

Extraversion modulates functional connectivity hubs of resting‐state brain networks

Personality dimension extraversion describes individual differences in social behaviour and socio‐emotional functioning. The intrinsic functional connectivity patterns of the brain are reportedly associated with extraversion. However, whether or not extraversion is associated with functional hubs warrants clarification. Functional hubs are involved in the rapid integration of neural processing, and their dysfunction contributes to the development of neuropsychiatric disorders. In this study, we employed the functional connectivity density (FCD) method for the first time to distinguish the energy‐efficient hubs associated with extraversion. The resting‐state functional magnetic resonance imaging data of 71 healthy subjects were used in the analysis. Short‐range FCD was positively correlated with extraversion in the left cuneus, revealing a link between the local functional activity of this region and extraversion in risk‐taking. Long‐range FCD was negatively correlated with extraversion in the right superior frontal gyrus and the inferior frontal gyrus. Seed‐based resting‐state functional connectivity (RSFC) analyses revealed that a decreased long‐range FCD in individuals with high extraversion scores showed a low long‐range functional connectivity pattern between the medial and dorsolateral prefrontal cortex, middle temporal gyrus, and anterior cingulate cortex. This result suggests that decreased RSFC patterns are responsible for self‐esteem, self‐evaluation, and inhibitory behaviour system that account for the modulation and shaping of extraversion. Overall, our results emphasize specific brain hubs, and reveal long‐range functional connections in relation to extraversion, thereby providing a neurobiological basis of extraversion.     

Authoritative Parenting of Chinese Mothers of Children with and without Intellectual Disability

The present study examined authoritative parenting and associations with parenting sense of competence and social support in Chinese mothers of children with intellectual disability and mothers of typically developing children. One hundred and sixty-seven mothers of children with intellectual disability with a mean age of 10.89 years (SD?=?1.74) and 119 mothers of typically developing children with a mean age of 10.55 years (SD?=?1.10) participated in a survey. Mothers of children with intellectual disability reported similar levels of parental warmth, and less use of reasoning and autonomy support compared with mothers of typically developing children. Parenting efficacy contributed uniquely to three dimensions of authoritative parenting for mothers of children with intellectual disability. By comparison, parenting efficacy did not contribute to use of reasoning and autonomy support for mothers of typically developing children. Social support made a unique but small contribution to parental warmth but not to parental reasoning and autonomy support for mothers of children with intellectual disability. For mothers of typically developing children, social support was associated with both parental warmth and autonomy support. This study suggests that child disability status is related to maternal authoritative parenting, and additionally, parenting efficacy plays a more critical role in predicting authoritative parenting of Chinese mothers of children with intellectual disability than mothers of typically developing children.     

宽宏大量与睚眦必报:宽恕和报复对愤怒的降低作用

本研究通过3个实验比较宽恕和报复对愤怒的降低作用。采用假设情景的方法,实验1通过在冒犯行为之后直接启动宽恕或报复,结果显示宽恕比报复对愤怒的降低作用更好,并且对消极情绪也具有降低作用;实验2考察在不同冒犯行为意图下宽恕与报复对愤怒的降低作用,结果显示不管是有意而为还是无心之过的冒犯行为,宽恕对愤怒的降低作用均要优于报复。实验3要求被试在冒犯行为后进行宽恕或报复,结果显示宽恕和报复对愤怒均有降低作用,但是宽恕的降低效果要显著优于报复。研究显示,对于冒犯行为后的愤怒感,宽恕的降低作用优于报复。     

Trait compassion is associated with the neural substrate of empathy

Individual differences in the personality trait Agreeableness underlie humans’ ability to interpret social cues and coordinate effectively with others. However, previous investigations of the neural basis of Agreeableness have yielded largely inconsistent results. Recent evidence has demonstrated that Agreeableness can be divided into two, correlated subdimensions. Compassion reflects tendencies toward empathy, sympathy, and concern for others, while Politeness reflects tendencies toward compliance and refraining from aggression and exploitation. The present study seeks to clarify the neural substrates of Agreeableness by examining whether structural differences in the brain show distinct associations with Compassion and Politeness. Results of a meta-analysis of fMRI studies examining empathy were used to generate hypotheses about the brain regions and networks that underlie trait Compassion. Results of a large-scale structural neuroimaging investigation (N = 275) were largely consistent with the meta-analysis: Compassion was positively correlated with gray matter volume in the bilateral anterior cingulate cortex (ACC) and anterior insula (AI). Further, these differences appear to be associated with Compassion specifically, as opposed to Politeness, suggesting that these two traits have at least partially distinct neuroanatomical substrates.     

心理理论和语言发展的关系

大量的研究表明心理理论和语言之间存在着密切的关系,但具体关系如何,一直存在争议。文章介绍了心理理论和语言关系的新近研究,着重阐述了目前关于二者关系的两种观点： （1）心理理论和语言发展之间不仅是早期揭示的一般相关关系,而是可能存在着因果关系——或以语言为因,或以心理理论为因;（2）心理理论和语言都受第三种因素影响,如执行功能和生长环境,但这些因素是究竟如何影响心理理论和语言发展的,还需深入探讨。文章最后对该领域今后的研究提出了新的见解和思路,包括对不同语言能力间的比较研究,对二者关系的跨文化研究和毕生取向研究等