A cluster randomised controlled trial of an intervention based on the Health Action Process Approach for increasing fruit and vegetable consumption in Iranian adolescents

Objective: To evaluate an intervention programme based on the Health Action Process Approach and designed to increase the intake of fruit and vegetables (F&V) among Iranian adolescents aged 13 to 18.

Design: A randomised controlled trial with three arms examined the short- (1 month) and long-term (6 months) effects of the intervention. There were two intervention groups (one included adolescents only [A group; n = 510]; the second included mothers and adolescents [M + A group; n = 462]) and a control group (n = 483). All participants were recruited from schools.

Main outcome measures: Social cognitions, self-regulatory processes and F&V intake.

Results: The intervention led to an increase in F&V intake for adolescents in the short and long terms. Adolescents in the M + A group increased their F& V intake more than adolescents in the A group. Outcome expectancies, self-monitoring, intentions, action and coping planning, perceived social support and behavioural automaticity mediated the effect of the intervention on F&V intake.

Conclusion: The theory-based intervention led to an increase in F&V intake and promoted more positive social cognitions and self-regulatory processes among Iranian adolescents. The findings also provide evidence that involving mothers in an intervention can confer additional benefit.     

人格特质对微信用户朋友圈点赞行为动机影响的研究

移动互联网时代,微信的出现颠覆了人们的沟通方式,而点赞作为网络人际之间的互动更是呈现了用户的个人调节与社会认同。本研究采用问卷的方法,对368名微信用户的点赞动机与人格特质的关系进行调查。结果发现:(1)点赞行为有着不同的动机背景,这其中主要是自我认同和社会认同动机在起推动作用。(2)这其中不同动机的人又有着不同的人格特质,具体而言,严谨性与外向性影响自我认同,而宜人性与开放性影响社交认同。     

语音意识、命名速度和语素意识在汉语阅读发展中的作用

以123名小学四、五年级汉语儿童为研究对象,采用回归分析、结构方程模型探讨语音意识、命名速度和语素意识在阅读能力不同方面（准确性、流畅性和理解）的作用。结果显示,语音意识、命名速度和语素意识都是影响阅读能力的重要认知因素,但对不同方面阅读能力的作用存在差异：（1）语音意识、命名速度和语素意识均直接影响阅读准确性,且语素意识的贡献相对较大;（2）命名速度除直接影响阅读流畅性外,还通过阅读准确性的部分中介作用影响阅读流畅性,而语音意识和语素意识则通过阅读准确性的完全中介作用影响阅读流畅性;（3）语音意识、命名速度和语素意识对阅读理解均无直接影响,分别通过阅读准确性和阅读流畅性间接影响阅读理解。     

默读和出声阅读的副中央凹预视效应

以往研究大多考察默读中是否存在副中央凹预视效应及存在何种类型的预视效应,很少有研究探讨出声阅读中的副中央凹预视效应以及阅读中预视信息提取的时间进程。本研究采用边界范式,通过两个眼动实验考察默读和出声阅读中的副中央凹预视效应及预视信息提取的时间进程。实验1发现在默读和出声阅读中都存在副中央凹预视效应,但是默读中副中央凹预视效应更大。实验2发现出声阅读中在注视中央凹词汇的早期不能提取副中央凹处信息。两个实验的结果表明默读和出声阅读条件下的副中央凹加工是不同的,需要用不同的眼动模型解释。     

社会支持视角下顾客在线互助心理和行为机制

消费结构升级促使顾客通过参与价值共创获得更高层次心理满足感。顾客间通过网络平台参与交流、互动、分享和互助等价值共创行为,能够获得美好的情感体验,有助于形成人际之间的友谊,也使得顾客得以寻求自我表达和自我实现,收获更高层次的满足感。本研究以社会支持理论为基础,聚焦不同属性顾客在不同类型网站中参与在线互助的心理动机、心理收益和行为方式,采用行为实验、实证调查、案例研究、神经营销学等多种研究方法,深入剖析顾客参与在线互助过程中的心理和行为反应机制。预期研究成果将丰富现有顾客参与心理和行为的理论体系,也为企业激励顾客参与在线价值共创提供理论指导。     

Profiling Perceptual Learning Styles of Chinese as a Second Language Learners in University Settings

This study revisited Reid’s (1987) perceptual learning style preference questionnaire (PLSPQ) in an attempt to answer whether the PLSPQ fits in the Chinese-as-a-second-language (CSL) context. If not, what are CSL learners’ learning styles drawing on the PLSPQ? The PLSPQ was first re-examined through reliability analysis and confirmatory factor analysis (CFA) with 224 CSL learners. The results showed that Reid’s six-factor PLSPQ could not satisfactorily explain the CSL learners’ learning styles. Exploratory factor analyses were, therefore, performed to explore the dimensionality of the PLSPQ in the CSL context. A four-factor PLSPQ was successfully constructed including auditory/visual, kinaesthetic/tactile, group, and individual styles. Such a measurement model was cross-validated through CFAs with 118 CSL learners. The study not only lends evidence to the literature that Reid’s PLSPQ lacks construct validity, but also provides CSL teachers and learners with insightful and practical guidance concerning learning styles. Implications and limitations of the present study are discussed.     

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.     

中国癌症病人生活质量的测定──EORTC QLQ—C30在中国的试用

引进EORTCQLQ-C30,验证其在中国大陆的应用情况,为中国肿瘤学领域生活质量研究提供有效和实用的评定工具.运用随机对照实验设计,测查了289名癌症病人,结果显示各分量表中项目与所属量表的相关均高于与其他量表的相关,各分量表间呈中等偏下相关,量表因子结构分析与EORTC结果大体相似,三种方法检验的临床效度均较高.由此得出QLQ-C30各项心理测量学特性均达到要求,临床效度和实用性也比较好,在中国大陆的癌症病人中是可行的、可信的、有效的和敏感的.     

Movement substructures change as a function of practice in children and adults

An experiment is reported in which participants at 6 (n = 20), 9 (n = 20), and 24 years (n = 20) of age either received or did not receive practice on a rapid aiming task using the arm and hand. The purpose of the experiment was to document the changes in movement substructures (in addition to movement time) as a function of practice. After receiving 10 baseline trials, subjects in the practice groups received 30 practice trials followed by 10 retention trials on each of 5 days, while subjects in the no-practice group had only baseline and retention trials. Retention-only trials were divided into primary (reflecting the ballistic controlled part of the movement) and secondary (reflecting corrective movement adjustments) submovements. In addition, jerk (the 3rd derivative of movement displacement) was calculated as an estimate of the smoothness of the movement. Participants increased the primary submovement as a function of practice; however, the increases were substantially larger in the children (25-30%) than in the adults (10%). Participants also decreased jerk as a function of practice and the decreases were greater in children than in adults. The results suggest that with practice the primary submovement is lengthened so that it ends nearer the target, especially in children. Associated with the primary submovement covering a larger percentage of the movement length and time, movements became smoother.     

鬼谷子的测谎心理思想研究

鬼谷子的测谎心理思想其目的在于帮助统治者考察权变、征召远近人才、谋划国家事物、献说陈情、决安危、定亲疏、察同异、辨真伪。其基本依据的是阴阳观。他认为阴阳是宇宙变化的一贯之道,把握了阴阳之道,就获得了开启人内心隐秘的基本原理。其所遵循的原则是：知己知人原则,隐秘性原则,把握时机原则。其具体技术有捭阖术,即根据阴阳变化原理提出的开启和闭藏的技术;钩言术,即通过语言表达的动静状态窥探他人内心情报的方法;飞箝术,是以激励、褒扬的言语诱导对方获得实情而抓住对方心理的一种测谎技术。揣摩术,又分揣术和摩术。揣术是根据情感的两极变化和惯常行为表现推测对方心理真实情报的方法。摩术是指将内在情感与外在符验相结合进行推测、切磋、体会获得对方真实情报的方法。