On the Nature of the Probe Reaction-Time Task to Uncover the Attentional Demands of Movement

McLeod (1980) reported some findings which showed that no phase of a movement was more attention-demanding than the other phases, contrary to all the results previously reported (e.g., Ells, 1973; Glencross, 1980). However, McLeod used a paradigm in which the two tasks were serial. Each task consisted of a series of 50 reaction time (RT) trials and/or 50 aiming movement trials. In addition to this, the interval of time between a response and the following signal within each series was constant. In order to try to replicate McLeod’s findings, two experiments were conducted in which the response-signal interval was manipulated. The hypothesis was that time certainty associated with a constant interval would facilitate the allocation of time and would thus artificially reduce the interference between tasks. In Experiment I, manual responses were used for the RT task; in Experiment II, they were vocal. Manipulation of the response-signal interval does not change one of the conclusions reached by McLeod: when the RT task involves vocal responses and the results on the RT task are analyzed in terms of response rather than stimulus arrival during the movement, then there is no phase of the movement which is more attention-demanding than the other phases. However, the results of Experiment II in which both the vocal RT task and the movement task significantly deteriorated in the dual-task condition were taken as an indication that the movement studied involved central attentional demands.     

Simulated Visual Field Loss Does Not Alter Turning Coordination in Healthy Young Adults

Turning, while walking, is an important component of adaptive locomotion. Current hypotheses regarding the motor control of body segment coordination during turning suggest heavy influence of visual information. The authors aimed to examine whether visual field impairment (central loss or peripheral loss) affects body segment coordination during walking turns in healthy young adults. No significant differences in the onset time of segments or intersegment coordination were observed because of visual field occlusion. These results suggest that healthy young adults can use visual information obtained from central and peripheral visual fields interchangeably, pointing to flexibility of visuomotor control in healthy young adults. Further study in populations with chronic visual impairment and those with turning difficulties are warranted.     

Good and Bad Years: An Index of American Social,Economic, and Political Threat (1920–1986)

Information provided by 196 U.S. history professors, indicating the degree to which they considered each of the years from 1920 to 1986 threatening to the established order and way of life in America, was pooled to form a social, economic, and political threat (SEPT) index. Interrater reliability was high, and substantial test-retest reliability was evident for a selected subsample over a 6-month period. The index significantly correlated with 11 objective indices of threat, including the suicide rate, unemployment rate, rise and fall of common stocks, and number of military men on active duty. Several studies involving threat and authoritarianism were replicated and in some instances extended with the SEPT index (McCann & Stewin, 1984; Sales, 1972, 1973). The pseudo-archival SEPT index has utility when relatively global estimates of prevailing threat are required for historiometric research testing a diversity of hypotheses gleaned from psychological, sociological, historical, and political science theories.     

低社会经济地位影响自我调节的神经机制

自我调节是个体为了实现目标并适应不断变化的环境而监控和调节自己的认知、情绪和行为的能力, 在成就、人际交往和健康等各个领域发挥着作用, 被视为是人类成功和幸福的关键。然而, 大量研究发现个体的社会经济地位越低, 自我调节能力越差。为了提高低社会经济地位者的自我调节能力, 必须深入考察低社会经济地位影响自我调节的机制。神经科学为此提供了独特而重要的信息：低社会经济地位改变了背外侧前额叶皮层、扣带回、腹内侧前额叶、杏仁核、海马体、腹侧纹状体的结构和功能, 进而影响了自我调节的各个成分(认知调节、情绪调节、行为调节)。未来研究除了对神经机制中每条因果链进行更严格地考察外, 还应将神经生物学与发展心理学联系起来深入揭示不同发展阶段低社会经济地位对自我调节的独特影响机制, 并关注低社会经济地位者在神经和行为层面特定反应的适应性, 在此基础上开发出系统、持续、有效的干预方案。     

Developing and Adapting a Mindfulness-Based Group Intervention for Racially and Economically Marginalized Patients in the Bronx

Mindfulness-based interventions (MBIs; e.g., MBSR, MBCT, ACT) have been widely used and disseminated for treatment of myriad physical and psychological problems. However, most MBIs have primarily been used with middle-or upper-class White populations, with some instances where they have been adapted for use with diverse populations (e.g., Burnett-Zeigler et al., 2016, Roth and Robbins, 2004). However, even when adapted, most MBIs have not explicitly addressed unique factors faced by the target population, such as racial discrimination, unemployment, lack of financial means, and other stressors. We developed and used an iterative approach to refine a MBI group based on MBSR and MBCT, for a racially and ethnically diverse population in the Bronx, considered by the U.S. census to be the most diverse in the country. Based on a trauma-informed care and centering people of color approach, we developed a longer than usual (16 weeks) mindfulness-based group, where core skills were broken down into smaller chunks to facilitate easier incorporation into daily life. We also used a longer duration and 1-hour weekly meeting time keeping in mind needs of the individuals, who often had limited time to participate due to work limitations and other comorbid physical conditions. While acknowledging that the individuals this group was catering to had experienced multiple traumatic events, we sought to also highlight and further develop the resilience and courage people in the Bronx community bring to the table. We review two clinically rich case vignettes, and also discuss recommendations for working with racially and economically marginalized people, and include a call to action for health care providers and organizations to engage in activism.     

下腰痛的影像学过度诊断及对策

下腰痛的发病率很高,就诊的患者人次居骨科就诊患者的首位。当前临床上存在下腰痛影像学的"过度检查",原因包括医方的利益驱动、医生过分依赖影像学、医生的防御性医疗以及患者方面的因素。针对下腰痛患者不同的症状和体征选择个性化的影像学检查和诊断是解决该问题的主要办法。     

The role of child temperament on low‐income preschool children's relationships with their parents and teachers

The current study examined the associations between low‐income preschool children's temperament (reactive and regulatory) and their relationships with parents and teachers. In particular, we focused on the moderating role of regulatory temperament on reactive temperament in the prediction of closeness and conflict with parents and teachers. Two hundred ninety‐one children (M = 53.88 months, SD = 6.44 months), their parents, and teachers from 3 different preschools serving low‐income children in 2 midwestern cities in the United States participated. Parents reported on temperament and parent–child relationships, and teachers reported on teacher–child relationships. Hierarchical regression models using SAS PROC MIXED were employed to allow for nesting of children within classrooms. After controlling for child age, gender, ethnicity, and parent education, children's reactive temperament was negatively associated with parent–child closeness and positively associated with parent–child conflict and teacher–child conflict. Children's regulatory temperament was positively related to teacher–child closeness and negatively associated with teacher–child conflict. Regulatory temperament moderated the association between reactive temperament and teacher–child closeness. These findings suggest that although reactive temperament potentially undermines closeness in relationships with teachers, regulatory temperament can buffer the influence of reactive temperament on teacher–child closeness.

Highlights

• This study examined the association between children's temperament and their relationships with parents and teachers.
• Reactive temperament was positively associated with parent/teacher–child conflict and negatively associated with parent–child closeness. Regulatory temperament was a moderator for the association between reactive temperament and teacher–child closeness.
• Improving children's regulatory temperament may be helpful for children with the reactive temperament to have better social relationships with their teachers.