Beyond Dyadic Coordination: Multimodal Behavioral Irregularity in Triads Predicts Facets of Collaborative Problem Solving

We hypothesize that effective collaboration is facilitated when individuals and environmental components form a synergy where they work together and regulate one another to produce stable patterns of behavior, or regularity, as well as adaptively reorganize to form new behaviors, or irregularity. We tested this hypothesis in a study with 32 triads who collaboratively solved a challenging visual computer programming task for 20 min following an introductory warm‐up phase. Multidimensional recurrence quantification analysis was used to examine fine‐grained (i.e., every 10 s) collective patterns of regularity across team members' speech rate, body movement, and team interaction with the shared user interface. We found that teams exhibited significant patterns of regularity as compared to shuffled baselines, but there were no systematic trends in regularity across time. We also found that periods of regularity were associated with a reduction in overall behavior. Notably, the production of irregular behavior predicted expert‐coded metrics of collaborative activity, such as teams' ability to construct shared knowledge and effectively negotiate and coordinate execution of solutions, net of overall behavioral production and behavioral self‐similarity. Our findings support the theory that groups can interact to form interpersonal synergies and indicate that information about system‐level dynamics is a viable way to understand and predict effective collaborative processes.     

学前儿童执行功能与问题行为的关系:情境和性别的特异性

运用追踪设计检验了学前儿童执行功能特定成分和问题行为跨情境和性别的关系。选取101名学前儿童（48名男孩）为研究对象,采用实验任务测量儿童的执行功能,一年后采用母亲和教师报告分别收集儿童在家庭和学校情境的问题行为。结果发现,控制儿童年龄后：（1）在男孩中,抑制控制、认知灵活性和工作记忆负向预测一年后家庭情境的外化问题,认知灵活性负向预测一年后学校情境的外化问题,抑制控制正向预测一年后学校情境的内化问题;（2）在女孩中,执行功能三个成分均不能显著预测家庭情境的问题行为,认知灵活性正向预测一年后学校情境的外化问题。执行功能三个成分与问题行为间存在不同效应模式,且存在跨情境和性别的特异性。     

The Role of Problem Construction in Creative Production

This paper provides an overview of theory and research regarding problem construction and identification. Specifically, the paper reviews a theoretical model of processes associated with problem construction and empirical evidence in relation to the model. Finally, the paper reviews the literature on team problem construction.     

Constructing robust crew schedules with bicriteria optimization

Optimization‐based computer systems are used by many airlines to solve crew planning problems by constructing minimal cost tours of duty. However, today airlines do not only require cost effective solutions, but are also very interested in robust solutions. A more robust solution is understood to be one where disruptions in the schedule (due to delays) are less likely to be propagated into the future, causing delays of subsequent flights. Current scheduling systems based solely on cost do not automatically provide robust solutions. These considerations lead to a multiobjective framework, as the maximization of robustness will be in conflict with the minimization of cost. For example crew changing aircraft within a duty period is discouraged if inadequate ground time is provided. We develop a bicriteria optimization framework to generate Pareto optimal schedules for the domestic airline. A Pareto optimal schedule is one which does not allow an improvement in cost and robustness at the same time. We developed a method to solve the bicriteria problem, implemented it and tested it with actual airline data. Our results show that considerable gain in robustness can be achieved with a small increase in cost. The additional cost is mainly due to an increase in overnights, which allows for a reduction of the number of aircraft changes. Copyright © 2003 John Wiley & Sons, Ltd.     

科学发明情境中问题提出的脑机制再探

以高生态学效度的科学发明问题情境作为实验材料,采用静息态功能磁共振成像技术,基于低频振幅(ALFF)和静息态功能连接(RSFC)的分析方法,探讨创造性科学问题提出的脑机制。结果发现,在控制了被试性别、年龄后,提出新颖有效性问题的比率越高,左内侧前额叶(Left media prefrontal cortex,L-mPFC)和右小脑前叶(Right cerebellum)的ALFF值越高。进一步功能连接分析发现,提出新颖有效性问题的比率与mPFC和楔叶(Cuneus)之间的功能连接强度呈显著正相关。结果强调mPFC对于科学发明情境中问题提出的重要作用,且更高比率的新颖有效性问题的提出是通过mPFC与其它脑区的协同联结来实现的。     

Divergent thinking in the grasslands: thinking about object function in the context of a grassland survival scenario elicits more alternate uses than control scenarios

The survival processing effect is a recall advantage for information processed in the context of a grassland survival scenario. The current studies build upon previous research suggesting the effect is due to elaborative encoding and functional thinking. In two experiments, participants completed the “alternate uses test” under five conditions: baseline, grassland survival, Ebola survival, moving to a new home and planning a bank heist. Experiment 1 stimuli were everyday objects. Experiment 2 stimuli were functionally ambiguous “mystery” objects. Number of generated uses was highest in the baseline, but the grassland scenario was consistently highest of the schematic conditions. Recall data lend support to the mnemonic superiority of the grassland condition. Results suggest that grassland scenarios place fewer attenuating constraints on divergent thinking. It is suggested that the survival processing effect might be usefully conceptualised as an effect of creatively thinking about object function in response to broadly defined problems.     

优、差生解决有机合成的问题表征差异及其影响因素

用两个实验探讨了大学本科化学专业优生和差生解决有机合成问题所运用的问题表征的类型及其差异。结果表明：（１）大学生解决有机合成的问题表征有三种类型;符号表征、方法表征和机理表征。（２）优生能灵活运用上述三类问题表征,特别是运用机理表征抓住问题的关键,进而采用方法表征和符号表征来解题;差生则停留于符号表征和方法表征。很少采用机理表征,而方法表征又往往选择错误,因而不能正确解题。（３）优,差生在问题表征上的差异与其知识总量和知识结构有密切相关。     

家庭社会经济地位对青少年问题行为的影响:父母情感温暖和公正世界信念的链式中介作用

为探讨家庭社会经济地位对青少年问题行为的影响及其作用机制,基于生物生态学理论,采用家庭社会经济地位评估、简式父母教养方式问卷、公正世界信念量表和长处与困难问卷对全国三大片区13所中学的1337名青少年（7~12年级）进行调查。结果表明：（1）家庭社会经济地位、父母情感温暖、公正世界信念和问题行为之间两两显著相关,且家庭社会经济地位能显著负向预测问题行为;（2）父母情感温暖和公正世界信念在家庭社会经济地位与问题行为之间起显著的中介作用。具体为三条中介路径：一是父母情感温暖的单独中介作用;二是公正世界信念的单独中介作用;三是父母情感温暖和公正世界信念的链式中介作用。本研究丰富了问题行为领域的研究成果,为预防和干预青少年问题行为提供了理论基础。     

当代进化生物学研究的三种进路及其传统

当代生物进化的研究存在着生物系统学与生态学进路、理论生物学进路和系统生物学进路,这几种进路的研究范式继承了生物学在历史发展中形成的博物学、哲学和医学生理学这几个主要的研究传统,它们在不同方向上把进化生物学的研究推进到一个新的层次.