Egocentric metric representations in peripersonal space: A bridge between motor resources and spatial memory

Research on visuospatial memory has shown that egocentric (subject-to-object) and allocentric (object-to-object) reference frames are connected to categorical (non-metric) and coordinate (metric) spatial relations, and that motor resources are recruited especially when processing spatial information in peripersonal (within arm reaching) than extrapersonal (outside arm reaching) space. In order to perform our daily-life activities, these spatial components cooperate along a continuum from recognition-related (e.g., recognizing stimuli) to action-related (e.g., reaching stimuli) purposes. Therefore, it is possible that some types of spatial representations rely more on action/motor processes than others. Here, we explored the role of motor resources in the combinations of these visuospatial memory components. A motor interference paradigm was adopted in which participants had their arms bent behind their back or free during a spatial memory task. This task consisted in memorizing triads of objects and then verbally judging what was the object: (1) closest to/farthest from the participant (egocentric coordinate); (2) to the right/left of the participant (egocentric categorical); (3) closest to/farthest from a target object (allocentric coordinate); and (4) on the right/left of a target object (allocentric categorical). The triads appeared in participants' peripersonal (Experiment 1) or extrapersonal (Experiment 2) space. The results of Experiment 1 showed that motor interference selectively damaged egocentric-coordinate judgements but not the other spatial combinations. The results of Experiment 2 showed that the interference effect disappeared when the objects were in the extrapersonal space. A third follow-up study using a within-subject design confirmed the overall pattern of results. Our findings provide evidence that motor resources play an important role in the combination of coordinate spatial relations and egocentric representations in peripersonal space.     

Dealing with austerity measures within armed forces: The Dutch case

This article studies how Dutch military personnel respond to austerity-related discontent. Based on the online survey (N = 579) conducted among military personnel we investigate 4 response strategies to austerity measures applied in the Dutch armed forces: voice (collective protest), exit (leaving the organization), silence (deliberately deciding not to protest), and neglect (engaging in anti-organizational behavior). We focus on how personnel combine these strategies and apply cluster analysis to identify 6 typical response patterns that we label as protesters, escapers, quiescents, conformers, obstructionists and combaters. We investigate how personal characteristics and perception of unique military environment influence the response of military personnel. We conclude that clusters we described are not only distinct in their behavior—their personal characteristics and perceptions differ as well.     

数字空间表征的在线建构：来自干扰情境中数字SNARC效应的证据

尽管已有研究发现数字以空间方式表征在人类记忆系统, 但是人脑如何完成数字的空间表征尚存争议。本研究两个实验在不同比例的数字字母(实验1)和不同比例的数字汉字(实验2)混合情境中考察了数字空间表征特点及其机制, 对上述争议进行了深入研究。结果发现：(1)当数字字母比例为“1 : 1”时, 数字加工中不出现SNARC效应。当数字字母比例为“1 : 6”和“6 : 1”时, 数字加工中均出现SNARC效应。即数字字母比例与数字SNARC效应之间呈倒“U”型关系。(2)数字汉字混合情境中数字汉字比例与数字SNARC效应之间同样呈倒“U”型关系。结果说明：(1)干扰刺激与数字混合呈现会影响数字SNARC效应。(2)干扰刺激加工对数字SNARC效应的影响受到数字与干扰刺激比例的调节, 且具有跨干扰材料的稳定性。研究结果意味着数字的空间表征是人类通过统计学习在线建构的, 支持了工作记忆理论。     

心理虐待与忽视对志愿投入的影响:链式中介效应分析

本研究根据道德认同模型与亲社会行为理论,以808名大学生志愿者为被试,通过问卷调查探索心理虐待与忽视对志愿投入的影响机制。结果发现:心理虐待与忽视对志愿投入的影响主要由公正世界信念与道德认同的中介作用来实现。本研究揭示了心理虐待与忽视与志愿投入的关系及内在机制,丰富了公正世界信念和道德认同的相关研究。     

Seeing is believing: Priors,trust, and base rate neglect

Kahneman and Tversky (1973) described an effect they called ‘insensitivity to prior probability of outcomes’, later dubbed base rate neglect, which describes people’s tendency to underweight prior information in favor of new data. As probability theory requires that prior probabilities be taken into account, via Bayes’ theorem, the fact that most people fail to do so has been taken as evidence of human irrationality and, by others, of a mismatch between our cognitive processes and the questions being asked (Cosmides & Tooby, 1996). In contrast to both views, we suggest that simplistic Bayesian updating using base rates is not necessarily rational. To that end, we present experiments in which base rate neglect is often the right strategy, and show that people’s base rate usage varies systematically as a function of the extent to which the data that make up a base rate are perceived as trustworthy.     

空间焦虑与导航方式对寻路行为的影响

探讨了空间焦虑与导航方式对寻路行为的影响并分析了该效应的性别差异。实验被试96名,实验结果显示：在VR迷宫场景中寻路,对女性而言,空间焦虑与导航方式对寻路绩效影响显著。对空间焦虑较低的女性而言,标志导航最佳,标志与YAH地图并存时次之,YAH地图导航最差;对空间焦虑较高的女性而言,标志与YAH地图并存时效率最高,标志导航次之,YAH地图导航最差。对女性而言,YAH地图导航显著劣于其它两种导航方式。而对男性而言,空间焦虑与导航方式对寻路绩效的影响差异不显著。该研究结果可为导航支持系统的界面设计提供依据。     

听觉通道下负数的低水平加工引起注意的SNARC效应

采用刺激探测任务,探讨了听觉通道下负数的低水平加工能否引起注意的SNARC效应。结果表明:(1)负数的低水平加工能够产生注意的SNARC效应,即线索为绝对值小的负数时,被试对左耳目标反应更快;线索为绝对值大的负数时,被试对右耳目标反应更快。(2)负数的加工所引起听觉空间注意的转移并不依赖于负数所在的情境,而仅通过其绝对值大小与空间表征发生关联。这一结论与视觉条件下所得到的结论不一致,并支持了系统发生论假说。     

Neurocognitive development in 5- to 16-year-old North American children: A cross-sectional study

Executive functions are thought to be the latest functions to mature. However, this view has not been tested by assessing simultaneously memory, perception of emotions, visuospatial perception, and visuoconstructional skills. NEPSY II norm data from 1000 5- to 16-year-old U.S. children were obtained. Fifteen NEPSY II subtests with no floor or ceiling effects in any age group and no major changes in task type were selected. The 16-year level was attained at age 12 to 13 in all subtests with two exceptions: social perception (age 10 to 11) and narrative memory (age 14). Trend analyses showed that development was rapid in the age range 5 to 9 years followed by a deceleration in the rate of development. Peak performances were reached at 14 to 16 years but later in some subtests representing executive functions, verbal memory, and visuospatial performance. Thus, the study specified developmental time tables of neurocognitive functions. It demonstrated that not only executive functions but also verbal memory and visuospatial performance continue to develop beyond age 16.     

Enhanced probing of attentional bias: The independence of anxiety-linked selectivity in attentional engagement with and disengagement from negative information

Cognitive models of anxiety posit that an attentional bias to negative information plays a causal role in elevated anxiety vulnerability and dysfunction. There has been considerable recent interest in determining whether this attentional bias reflects facilitated attentional engagement with and/or impaired attentional disengagement from negative information. We concur with the claim of investigators who have noted that the methodologies previously employed to dissociate engagement and disengagement biases are not optimal for this purpose. In the present study, we employ a novel methodology, the Attentional Response to Distal vs. Proximal Emotional Information (ARDPEI) task, which enables the discrete assessment of these two types of attentional selectivity. The findings demonstrate that facilitated attentional engagement with and impaired attentional disengagement from negative information both characterise elevated anxiety vulnerability. Further, these biases represent distinctive facets of anxiety-linked attentional selectivity. We discuss the potentially differing roles that engagement and disengagement biases may play in the development and/or maintenance of anxiety vulnerability and dysfunction.     

Risk Factors for the Occurrence of Child Abuse and Neglect

SUMMARY

A large, nationally representative database of child abuse and neglect cases was analyzed to identify demographic risk factors for the occurrence of different types of abuse and neglect. The analyses used the data collected in the second National Incidence Study of Child Abuse and Neglect (the NIS-2) concerning children who were harmed by abuse or neglect. Multiple-factor logistic models were developed to identify risk factors for the occurrence of abuse or neglect in six categories of maltreatment: physical abuse, sexual abuse, emotional maltreatment, physical neglect, educational neglect, and multiple maltreatment. A key finding was that children in families with incomes under $15,000 per year were at far greater risk in every category of maltreatment. Also, older children were generally at greater risk in every category, and risk was related to family structure, family size, child's sex and race/ethnicity, and metropolitan status of the county. However, these relationships applied to only certain types of abuse or neglect or took different forms in different maltreatment categories. Interactions among risk factors were the rule rather than the exception. Findings emphasize the need for better coordination between human services and income support services to families. The results imply that risk assessment would be appreciably advanced by going beyond simple matrix approaches that independently consider different factors by developing assessment models that include interactions between different risk factors.