移动购物更快吗?决策场景与思维模式的相容性

既有文献对消费者延迟选择影响因素的研究, 主要集中于决策复杂度、决策者特质或情绪, 少有对决策场景进行深入探讨。互联网购物时代, PC端与手机端已成为重要的消费场景。针对手机端是否会加快消费者决策过程的问题目前也存在不一致的结论。本文引入决策双系统理论, 力图解释以往看似冲突的结论。消费者的购买决策模式, 不仅会受到决策任务(产品价格)的影响, 还会受到决策场景(购买终端)影响。当场景与决策任务使消费者启动的思维模式相一致时, 会提升决策流畅度, 降低延迟选择。本文发现, 移动端(PC端)与低(高)价格产品更容易激发相容的经验性(理性)思维, 降低延迟选择倾向。反之, 则会同时启动两种相左的决策思维, 增加延迟选择倾向。本文从场景启动与价格启动视角, 将以往消费者单一的决策思维模式, 拓展到多因素启动的思维模式相容性问题; 同时本文通过探究延迟选择问题, 对价格策略与场景化营销带来启示。     

百善孝为先?大学生双元孝道信念与网络成瘾的关系研究

本研究基于双元孝道模型和病理性互联网使用的认知行为模型,考察双元孝道信念对网络成瘾的影响,并检验非适应性认知的中介作用。以1152名大学生为被试,采用双元孝道信念量表、非适应性认知量表和网络成瘾量表进行测试,结果发现：（1）互惠性孝道和非适应性认知显著负相关,和网络成瘾显著负相关;权威性孝道和非适应性认知显著正相关,和网络成瘾显著正相关;非适应性认知和网络成瘾显著正相关;（2）非适应性认知在孝道信念与网络成瘾之间起中介作用。具体而言,互惠性孝道负向影响非适应性认知,权威性孝道正向影响非适应性认知,非适应性认知正向影响网络成瘾。本研究的结果表明,根植于中国传统文化的孝道信念通过非适应性认知的中介作用影响网络成瘾;而且互惠性孝道和权威性孝道具有相反的作用。     

生活事件对初中生抑郁的影响:自尊和反刍思维的链式中介作用

为了探讨生活事件、自尊、反刍思维和初中生抑郁之间的关系,研究采用青少年生活事件量表、自尊量表、反刍思维量表和儿童抑郁量表对684名初中生进行调查。结果显示：（1）生活事件与初中生抑郁呈显著正相关;（2）自尊和反刍思维在生活事件和初中生抑郁间起链式中介作用。生活事件不仅是触发初中生抑郁的重要外部因素,而且生活事件还会通过影响自尊和经由反刍思维对初中生抑郁产生间接作用。因此,减少和避免生活事件对初中生心理的冲击,增强其自尊水平,调整其负性认知方式是改善和预防初中生抑郁的重要途径。     

时间洞察力对成瘾行为的影响及其机制

成瘾行为给个体和社会带来了严重的危害。对成瘾人群时间洞察力的研究成为探讨成瘾行为产生和发展的一个新的视角。过去消极、现在享乐和现在宿命时间洞察力取向的个体更可能出现成瘾行为, 而未来时间洞察力取向则是成瘾行为的一个保护性因素, 它不仅可以减少成瘾行为的发生, 也有利于成瘾行为的康复。从自我调节, 冲动性决策等行为机制和前额叶的神经机制方面可以帮助我们深入理解时间洞察力对成瘾行为的影响。未来研究可以进一步探讨不同成瘾行为者时间洞察力的一致性与特异性; 采用纵向研究方法探讨成瘾者时间洞察力的动态变化过程; 对成瘾者的洞察力进行干预, 增加成瘾者的未来时间洞察力, 减少其过去消极和现在时间洞察力取向来帮助成瘾者实现时间洞察力的平衡, 从而提高其戒断效果。     

记忆的顿悟优势效应

记忆的顿悟优势效应指, 与加工非顿悟问题相比, 加工顿悟问题能够产生更优的记忆保持量。该效应在顿悟的两种操作性定义以及不同实验材料中稳定出现。基于顿悟阶段观, 研究者提出两种理论解释记忆的顿悟优势效应的认知机制：认知的生成效应和表征转化理论认为, 顿悟加工过程中的认知努力、适当迁移加工以及顿悟的表征转换加工促进记忆的保持效果; 情绪的“啊哈”体验理论认为, 加工顿悟问题后的情绪对后续的信息提取具有促进作用。未来的研究可从优化顿悟的指标、巩固记忆的顿悟优势效应、评估其持续性以及更加系统探讨记忆的顿悟优势效应的认知机制等四个方面展开。     

Using intraverbal prompts to increase divergent intraverbal responses by a child with autism

We examined the effectiveness of intraverbal prompts to increase the number of divergent responses to categorical questions composed of compound stimuli (e.g., Name some red things) for a 6‐year‐old child with autism. The intraverbal prompts involved providing the function, feature, and class of the target responses. A multiple probe across behaviors design was used. Results indicated that the child's total number of divergent responses was increased and maintained during 2‐week follow‐up probe trials. Novel responses were observed across conditions.     

Welcome to “the Rock”: Service Providers’ Views on Newcomer Youth Integration in Newfoundland and Labrador

This study investigates the needs of newcomer youth in Newfoundland and Labrador, and the services provided to them in the provincial capital, St. John’s, through the lens of service providers. We employ Bronfenbrenner’s bioecological model (1999, 2005) as the conceptual framework to explore how various ecological systems interact with one another to influence the development of newcomer youth. Data were drawn from 33 semi-structured interviews with personnel in various immigrant and refugee support agencies, medical and counseling units, municipal recreational offices, and educational programs, as well as ten observations of their programs. Our findings indicate that the current services and programs provide effective support in a number of areas. However, closer collaboration can be established between schools and community organizations, among different service agencies, and involving the business community. Service gaps identified include a lack of transportation to and from school, insufficient academic bridging programs, and no career counseling catering to newcomer students. We argue that service agencies should consider shifting some of their programs to the newcomer youth’s microsystems of school and family, and that the provincial educational authorities need to look into the transportation issue that infringes upon the rights of these students to appropriate school instruction.     

奖赏对海洛因成瘾者执行功能的影响机制

一些研究发现海洛因成瘾者奖赏失调表现为:对海洛因相关线索的注意偏向、渴求感增加,对金钱奖赏表现出"即时收益优先"的高风险决策模式和对长时收益的敏感性降低。另一些研究发现海洛因成瘾者的执行功能存在障碍。奖赏失调和执行功能障碍在成瘾物质使用的维持和复吸中起着重要作用。双重竞争模型认为奖赏和执行功能的交互作用决定着行为的结果,但是奖赏对海洛因成瘾者执行功能的影响机制还不清楚。因此,拟使用事件相关电位技术来考察海洛因相关线索和金钱奖赏对不同戒断期成瘾者执行功能的影响机制,短期(1~3个月)、长期(18个月以上)海洛因戒断者和健康对照组被比较。这不仅有助于构建完善的成瘾理论体系,还有助于确定临床戒断后复吸的风险因素和不同戒断期的治疗目标。     

Developing new online calibration methods for multidimensional computerized adaptive testing

Multidimensional computerized adaptive testing (MCAT) has received increasing attention over the past few years in educational measurement. Like all other formats of CAT, item replenishment is an essential part of MCAT for its item bank maintenance and management, which governs retiring overexposed or obsolete items over time and replacing them with new ones. Moreover, calibration precision of the new items will directly affect the estimation accuracy of examinees’ ability vectors. In unidimensional CAT (UCAT) and cognitive diagnostic CAT, online calibration techniques have been developed to effectively calibrate new items. However, there has been very little discussion of online calibration in MCAT in the literature. Thus, this paper proposes new online calibration methods for MCAT based upon some popular methods used in UCAT. Three representative methods, Method A, the ‘one EM cycle’ method and the ‘multiple EM cycles’ method, are generalized to MCAT. Three simulation studies were conducted to compare the three new methods by manipulating three factors (test length, item bank design, and level of correlation between coordinate dimensions). The results showed that all the new methods were able to recover the item parameters accurately, and the adaptive online calibration designs showed some improvements compared to the random design under most conditions.     

运动技能水平与躯体感觉输入对运动表象的影响

运动表象质量与运动技能水平有关,运动表象质量随着运动技能水平的提高而上升。器械使用可使人脑产生可塑性改变,使用者会将器械纳入身体图式。然而,两者影响运动表象的神经心理机制还不清楚。本研究采用功能性磁共振成像探析篮球运动员与新手在不同持球条件下表象投篮时脑功能活动的差异。结果表明运动员表象质量较好,镜像神经系统激活高于新手;持球条件下运动员表象质量显著高于不持球条件下,镜像神经系统激活程度显著低于不持球条件下。研究说明持器械可以显著提高运动员的表象质量,器械使用带来镜像神经系统的可塑性变化。