Testing motivational and self-regulatory mechanisms of action on device-measured physical activity in the context of a weight loss maintenance digital intervention: A secondary analysis of the NoHoW trial

BackgroundTo date, few digital behavior change interventions for weight loss maintenance focusing on long-term physical activity promotion have used a sound intervention design grounded on a logic model underpinned by behavior change theories. The current study is a secondary analysis of the weight loss maintenance NoHoW trial and investigated putative mediators of device-measured long-term physical activity levels (six to 12 months) in the context of a digital intervention.MethodsA subsample of 766 participants (Age = 46.2 ± 11.4 years; 69.1% female; original NoHoW sample: 1627 participants) completed all questionnaires on motivational and self-regulatory variables and had all device-measured physical activity data available for zero, six and 12 months. We examined the direct and indirect effects of Virtual Care Climate on post intervention changes in moderate-to-vigorous physical activity and number of steps (six to 12 months) through changes in the theory-driven motivational and self-regulatory mechanisms of action during the intervention period (zero to six months), as conceptualized in the logic model.ResultsModel 1 tested the mediation processes on Steps and presented a poor fit to the data. Model 2 tested mediation processes on moderate-to-vigorous physical activity and presented poor fit to the data. Simplified models were also tested considering the autonomous motivation and the controlled motivation variables independently. These changes yielded good results and both models presented very good fit to the data for both outcome variables. Percentage of explained variance was negligible for all models. No direct or indirect effects were found from Virtual Care Climate to long term change in outcomes. Indirect effects occurred only between the sequential paths of the theory-driven mediators.ConclusionThis was one of the first attempts to test a serial mediation model considering psychological mechanisms of change and device-measured physical activity in a 12-month longitudinal trial. The model explained a small proportion of variance in post intervention changes in physical activity. We found different pathways of influence on theory-driven motivational and self-regulatory mechanisms but limited evidence that these constructs impacted on actual behavior change. New approaches to test these relationships are needed. Challenges and several alternatives are discussed.Trial registrationISRCTN Registry, ISRCTN88405328. Registered December 16, 2016, https://www.isrctn.com/ISRCTN88405328.     

An acoustical analysis of stutterer''s speech prior to and at the termination of speech therapy

The speech of nine adult stutterers was analyzed acoustically prior to and at the termination of a modified Van Riperian procedure to determine if therapy produced discernable changes in their post-therapy fluent speech. The findings indicate that stuttering frequency decreased significantly and reading rate decreased by a statistically insignificant amount during the course of therapy. Vowel duration and the occurrence of voicing during the stop consonant production increased significantly. These findings support the hypothesis that stuttering therapy can affect more than the fluency and rate characteristics of the stutterer's posttherapy speech.     

班级环境如何影响受欺负者的适应？健康环境悖论及其发生机制

“健康环境悖论”是指在受欺负水平相对较低的环境中,受欺负个体有更多的适应问题。通过梳理相关实证研究,本文从人际与认知两大方面分析健康环境悖论的发生机制。人际机制强调健康环境会影响同伴群体对于受欺负者的态度和受欺负者的友谊,这些不良的人际关系进一步加剧受欺负者的适应困难。认知机制认为健康环境会通过向上的社会比较和消极归因方式,影响受欺负者的适应问题。最后,我们讨论了中国文化背景下“健康环境悖论”的适用性问题、未来研究的发展方向和对于干预实践的建议。     

共同经历不公平降低个体的不公平感知

以往鲜有研究考察个体与他人共同经历不公平如何影响其不公平感知。本研究实验1~2采用最后通牒博弈任务考察个体独自经历,以及与他人共同经历不公平时的不公平感知。结果表明,共同经历不公平,相比独自经历不公平,降低了个体的不公平感知。实验3采用眼动技术考察共同经历不公平降低个体不公平感知的内部心理机制,结果表明,个体越关注共同经历者的收益,其不公平感知越低,该结果支持社会比较的观点。     

社会互动视角下的人际情绪调节：概念、测量和理论取向

人际情绪调节指的是个体通过与他人的互动,对自己或他人情绪进行调节的社会加工过程,对人际互动和社会关系的维持具有重要的意义。本文基于人际情绪调节社会互动的视角,首先探讨了人际情绪调节的概念;其次简要介绍了人际情绪调节的测量方法及其优缺点,包括主观评价法,实验室法和动态评估法等;最后分别从沟通理论和过程理论两方面梳理了人际情绪调节的研究,并针对这两方面的理论取向,提出相应的未来研究方向。     

动作理解因境而异:动作加工中情境信息的自动整合

针对动作理解的机制,模拟论主张大脑自发模拟他人的动作,就相同的动作其理解也相同,而理论论则认为人们基于合理性原则对他人动作进行推理,相同的动作发生在不同的情境时会有不同的理解。但以往研究所采用动作材料的运动学特性和发生情境存在共变,其难以区分动作理解是支持模拟论还是理论论。通过两项实验,采用动画制作技术来产生有无约束情境下的追逐动作,以指示动作加工过程的脑电μ抑制为指标,对前述两种观点进行了检验。其中,在约束情境中存在障碍物,追逐者需改变运动方向以绕过障碍物,从后方逐渐趋近目标;而无约束情境中不存在障碍物,但追逐者依然保持与存在约束情景下相同的运动模式。结果发现,当追逐动作发生在存在约束的情境时,其基于合理性原则推测可获得清晰的动作目标,该条件下的μ抑制程度高于不存在约束情境的条件(实验1);而当仅追逐者运动,即趋近的目标不确定时,虽然有约束和无约束情境间的物理差异与实验1相同,但条件间μ抑制的差异消失(实验2);且上述μ抑制并非与注意相关的枕叶α活动的泛化。该结果提示,动作发生的情境信息影响人们对动作的理解,即基于推理过程理解动作,支持理论论观点。     

Context effects in marketing practice: the case of mood

The role of individuals' affective state on information processing and decision making has attracted the attention of researchers in the social sciences. Building on the findings reported in the literature, the authors examine the effects of mood on marketing practice. Implications for advertising practices as well as the potential manipulation of elements of the physical store/retail environment (atmospherics) in which consumers operate in order to affect behaviour are discussed. Copyright © 2004 Henry Stewart Publications.     

伦理导向人力资源管理实践的跨层次作用机制:基于社会情境与社会认知理论

伦理 ¹( ¹ 与组织管理领域的常规做法一致, 本文将伦理与道德看作同义概念, 交替使用。)危机给企业经营带来巨大挑战, 现有文献较多关注微观视角的伦理行为, 缺乏从中观视角对人力资源管理制度开展研究, 导致在实践上无法形成有效的制度化抓手。人力资源管理实践作为中观视角的企业伦理实践之一, 正是针对伦理问题的有效回应。立足于人力资源管理与企业伦理领域的交叉点, 从三个方面构建伦理导向人力资源管理实践的研究框架:(1)基于社会情境理论探讨伦理导向人力资源管理实践对组织伦理绩效的影响机制; (2)基于社会认知理论探讨伦理导向人力资源管理实践对团队伦理建言的跨层次影响机制; (3)基于社会认知理论探讨伦理导向人力资源管理实践对个体伦理建言的跨层次影响机制。研究将丰富人力资源管理理论, 并为企业有效实施伦理导向人力资源管理实践提供启示与帮助。     

Quand les technologies s’incarnent dans l’activité : le cas des réseaux sociaux numériques d’entreprise

Our aim to identify factors which support use or provide rejection for “regular” but non intensive Enterprise Social Network (ESN) users. From UTAUT model, we propose to adapt social context evaluation by fixing attention on professional stake and context. Our results show partial benefits for the tool in professional activity. Even if these results are able to explain user disaffection, it also questions ESN as the structuring artefact.     

激进生成论及其反表征主义革命

生成论是当代具身认知科学中的一个新取向。它反对传统认知科学中的表征主义观点,主张心智并非认识者对环境信息的表征和加工,而是行动的制造者,是特定身体构造和身体能力的行动者与环境的互动与耦合过程。激进生成论认为自创生的生成论和感觉运动的生成论在反对表征主义方面过于“温和”。因此,它主张“激进化”生成论,强调基本心智就是一种反应形式,不包含任何内容性心理表征。因此,它要掀起一场反表征主义“革命”。这一激进主张受到来自左右两方面的批评。