How do children coordinate simultaneous upper and lower extremity tasks? The development of dual motor task coordination

When performing simultaneous clapping with walking or galloping, adults adopt coupled, consistent and stable dual motor task coordination; do developmental trends in this coordination exist? In this study, we measured and compared coupling characteristics, consistency across trials and variability of phasing in 4-, 6-, 8-, and 10-year-olds (n=44) as they also performed the same dual motor task. For walk/clap, children adopted specific coupling patterns like adults by 8 years and with the same consistency by 10 years. Across age, children became less variable in clap and step movements separately and as coupled together. In the gallop/clap, children did not resemble adults in coupling patterns by 10 years but all measures were becoming more consistent across age. We discuss dual motor task coordination as a function of age and task complexity using a "dynamic" perspective within a developmental context.     

Mental health protective factors among flourishing Canadian women university student-athletes

Mental health is an important resource for student-athletes. Flourishing (Keyes, 2002) may be a useful concept for examining aspects of mental health. Therefore, the purpose of this study was to investigate mental health protective factors among flourishing Canadian university student-athletes over the course of their sport season. Initially, 36 Canadian student-athletes completed the Mental Health Continuum – Short Form (Keyes, 2009) and Sport Mental Health Continuum – Short Form (Foster & Chow, 2019). Based on the results from the questionnaires, six women athletes who were identified as flourishing at global and sport levels then participated in the study. Data were generated through individual pre- and post-season semi-structured interviews, and in-season weekly written diaries. Analysis followed guidelines outlined by Smith et al. (2009) for interpretative phenomenological analysis. Results are presented over three stages of the seasons (pre-, in-, and post-season). In the pre-season, participants invested in their flourishing by making positive connections and planning their schedule. In-season, participants discussed facing challenges and tried to maintain flourishing by managing their commitments, communicating with coaches, and looking for positives. In the post-season, the participants attempted to re-invest in their flourishing by reflecting on their season and taking a break from sport. It appeared that the athletes were able to identify potential challenges to their flourishing in sport and use global resources to buffer the impact. These results reveal strategies that may help promote and protect mental health among student-athletes.     

任务转换中惯性激活对内隐记忆的影响：来自ERPs的证据

以往研究认为内隐记忆具有不受干扰影响的自动化加工特征,其证据主要来自于对内隐记忆编码过程的研究。最近已有多项研究发现,内隐记忆受提取过程中的干扰影响,但对这一现象的产生机制目前仍尚无定论。本研究根据任务转换相关理论,通过将go/no-go范式引入干扰任务,探讨提取过程中前置干扰对内隐记忆产生影响的内在机制。结果表明,前置的干扰任务产生惯性激活时,后续的内隐记忆任务会受到影响,即启动效应降低。对惯性激活进行抑制后,随后的内隐记忆则不受影响。并且,在内隐记忆相关的N400成分上得到了与行为数据一致的结果,即在no-go干扰下,获得的N400新旧效应,在go干扰下却未被发现。研究结果证明,提取干扰对内隐记忆的影响主要由干扰任务与内隐记忆任务对认知资源的竞争导致。     

The Smart System 1: evidence for the intuitive nature of correct responding on the bat-and-ball problem

Influential work on reasoning and decision-making has popularised the idea that sound reasoning requires correction of fast, intuitive thought processes by slower and more demanding deliberation. We present seven studies that question this corrective view of human thinking. We focused on the very problem that has been widely featured as the paradigmatic illustration of the corrective view, the well-known bat-and-ball problem. A two-response paradigm in which people were required to give an initial response under time pressure and cognitive load allowed us to identify the presumed intuitive response that preceded the final response given after deliberation. Across our studies, we observe that correct final responses are often non-corrective in nature. Many reasoners who manage to answer the bat-and-ball problem correctly after deliberation already solved it correctly when they reasoned under conditions that minimised deliberation in the initial response phase. This suggests that sound bat-and-ball reasoners do not necessarily need to deliberate to correct their intuitions; their intuitions are often already correct. Pace the corrective view, findings suggest that in these cases, they deliberate to verify correct intuitive insights.     

Musical expertise has minimal impact on dual task performance

Studies investigating effect of practice on dual task performance have yielded conflicting findings, thus supporting different theoretical accounts about the organisation of attentional resources when tasks are performed simultaneously. Because practice has been proven to reduce the demand of attention for the trained task, the impact of long-lasting training on one task is an ideal way to better understand the mechanisms underlying dual task decline in performance. Our study compared performance during dual task execution in expert musicians compared to controls with little if any musical experience. Participants performed a music recognition task and a visuo-spatial task separately (single task) or simultaneously (dual task). Both groups showed a significant but similar performance decline during dual tasks. In addition, the two groups showed a similar decline of dual task performance during encoding and retrieval of the musical information, mainly attributed to a decline in sensitivity. Our results suggest that attention during dual tasks is similarly distributed by expert and non-experts. These findings are in line with previous studies showing a lack of sensitivity to difficulty and lack of practice effect during dual tasks, supporting the idea that different tasks may rely on different and not-sharable attentional resources.     

A dual-process account of the development of scientific reasoning: The nature and development of metacognitive intercession skills

Metacognitive knowledge of the dual-processing basis of judgment is critical to resolving conflict between analytic and experiential processing responses [Klaczynski, P. A. (2004). A dual-process model of adolescent development: Implications for decision making, reasoning, and identity. In R. V. Kail (Ed.), Advances in child development and behavior, Vol. 31 (pp. 73–123). San Diego, CA: Academic Press]. Such conflict is ubiquitous when reasoning scientifically. Three studies explored the nature, development, and stability of this metacognitive knowledge. In each study, participants completed the ratio-bias judgment task, which assessed their tendency to make analytically based responses, and the ratio-bias evaluation task, which assessed their metacognitive knowledge of the processing basis of judgments on the task (Metacognitive Status). In Study 1, college students’ judgment performance was related to metacognitive status but not to general cognitive ability. In Study 2, metacognitive status was related to age and mathematics-related changes. Metacognitive status again predicted participants’ tendency to make analytically based judgments. In Study 3, college students’ judgments, but not metacognitive status, were affected by task conditions. The evidence suggests that assessing metacognitive knowledge is important for understanding how conflict between analytically and experientially based judgments is resolved.     

推理心理研究中的逻辑加工与非逻辑加工评析

本文对西方心理学研究中有关推理心理学争论的两个热点问题之一：逻辑推理与非逻辑推理之争的发展线索和相互关系等问题进行了评述,指出了这两种理论争论中未能注意到的三个问题,并对试图解决这三个问题的“知识和试题双重结构模型”作了简要介绍。     

An affective-experiential perspective on reactions to fair and unfair events: Individual differences in affect intensity moderated by experiential mindsets

The present paper focuses on what psychological processes are driving people’s reactions to fair and unfair events. Specifically, by extending on ideas that people’s reactions to fair and unfair events consist at least partly of affect-related responses, and by adopting the assumption made in cognitive-experiential self-theory that the operation of experiential mindsets is intimately associated with affect-related experiences, we formulate the hypothesis that individual differences in affect intensity will moderate reactions to fair and unfair events. Introducing a novel manipulation of experiential and rationalistic mindsets to the research literature, the findings of two studies indeed reveal that especially for people in experiential (vs. rationalistic) mindsets negative affective reactions to fair and unfair events increase with high (vs. low) scores on affect intensity. Implications for the literature on social justice, experiential mindsets, and affect intensity are discussed.