团队断裂带对团队绩效的影响：团队交互记忆系统的作用

对团队构成与团队绩效关系的认识有助于充分利用团队结构优势、提高团队效能、建立竞争优势。理论界对团队断裂带与团队绩效的关系给予了极大关注, 然而遗憾的是, 研究结果还存在较大分歧。通过明确团队断裂带的属性类别, 探索团队断裂带与团队绩效之间的中介机制, 试图系统解释分歧产生的原因。基于115个实际工作团队配对样本数据的结构方程模型分析表明, 信息相关断裂带通过提高团队交互记忆系统水平促进团队绩效; 社会属性断裂带与团队交互记忆系统或团队绩效都无显著关系。本研究结果有助于深化对团队断裂带内涵及效能机制的认识, 推动团队断裂带理论的发展。     

交互记忆系统研究回顾与展望

交互记忆系统是团队成员之间形成的一种彼此依赖的,用以编码、储存和提取不同领域知识的合作分工系统。其研究有助于发现高效工作团队如何处理解决问题所需要的信息,解释团队成员怎样通过发挥各自的专长去解决团队面临的问题。它是解释团队知识处理过程的一个机制。相关研究已有近20年的历史。文章从交互记忆系统的形成和维护、测量、影响因素及其对团队有效性的作用等几个方面对已有研究进行回顾,并指出其对管理研究和管理实践的借鉴意义及未来可能的研究方向     

Phase-specific relationships between team learning processes and transactive memory development

With this study we seek to contribute to the research on the emergence of transactive memory, that is, the knowledge of “who knows what”, as part of the structural component of transactive memory systems (TMSs). Based on our theoretical model of team learning and transactive memory development, we analyse the relationships among different team learning behaviours and transactive memory during various phases of team development. We use a longitudinal design with three points of measurement at the beginning, in the middle, and at the end of a semester, to examine real student project teams over their full life cycle. The results support our presumptions of phase-specific influences of team learning behaviours on transactive memory development. This shows that knowledge-based processes (storage and retrieval) play a more important role during early stages of project-based teamwork, followed by a shift to a higher relevance of communication-based processes (reflection and co-construction) in later stages. Implications for further research and team management phenomena are discussed.     

Gender stereotypes and assumptions about expertise in transactive memory

This experiment investigated how people use gender stereotypes to infer the relative knowledge of interdependent others, and how those assumptions can affect the division of knowledge responsibilities in transactive memory systems. Participants indicated their expertise relative to the average male and female undergraduate student on six knowledge categories. Two of these were consistent with female stereotypes (soap operas and cosmetics), two were consistent with male stereotypes (sports and cars), and two were neutral (geography and history). Everyone then worked on a collective memorization task with an assumed partner. The design was a 2 × 2 factorial, with the participants’ gender and their assumed partners’ gender (same or different as the participant’s) as factors. The results showed that both male and female participants shared similar gender stereotypes across knowledge domains. Participants with opposite-sex partners were more likely to assign categories based on gender stereotypes than were participants with same-sex partners. As a result, participants with opposite-sex partners learned more information in categories consistent with those stereotypes. These findings suggest that transactive memory systems may perpetuate gender stereotypes.     

The effects of road traffic noise and meaningful irrelevant speech on different memory systems

To explore why noise has reliable effects on delayed recall in a certain text-reading task, this episodic memory task was employed with other memory tests in a study of road traffic noise and meaningful but irrelevant speech. Context-dependent memory was tested and self-reports of affect were taken. Participants were 96 high school students. The results showed that both road traffic noise and meaningful irrelevant speech impaired recall of the text. Retrieval in noise from semantic memory was also impaired. Attention was impaired by both noise sources, but attention did not mediate the noise effects on episodic memory. Recognition was not affected by noise. Context-dependent memory was not shown. The lack of mediation by attention, and road traffic noise being as harmful as meaningful irrelevant speech, are discussed in relation to where in the input/storing/output sequence noise has its effect and what the distinctive feature of the disturbing noise is.     

Storage and processing in visuo-spatial working memory

Visuo-spatial working memory has been used to account for performance in a wide range of visuo-spatial tasks, including perceptuo-motor tracking and immediate recall of visually presented patterns. However a developing body of evidence points to a fractionation of the concept into visuo-spatial processing that calls on general purpose executive resources, and a visual 'cache' memory for temporary storage in on-line cognition. Two related experiments are described which address whether processing and temporary memory draw on overlapping or on distinct resources in working memory. Experiment 1 demonstrates that participants can accurately respond to a series of targets appearing in random locations whether or not they have the additional load of retaining and subsequently recalling the appearance of each target. Memory for target appearance likewise is largely unaffected by the additional load of requiring a response to each target. Experiment 2 demonstrates similar findings when verbal labeling of the patterns is inhibited through the use of articulatory suppression. Results are interpreted as consistent with a multiple component working memory system.     

Collective interviewing: A transactive memory approach towards identifying signs of truthfulness

Group interviewing has been neglected in the deception literature, yet it coincides with recent collective memory research. The present experiment applied the transactive memory theory to a collective interviewing situation and explored whether signs of truthfulness emerged through measuring joint memory recall. Truth-tellers were real couples who had been in a relationship for at least one year and cohabiting. Lying pairs were friends who pretended to be in a relationship for at least one year and cohabiting. All couples were interviewed in their pairs about their ‘real’ or ‘fictitious’ relationships. It was found that truth-telling pairs posed questions to one another, provided cues to one another, handed over remembering responsibility, and finished each others’ sentences significantly more than lying pairs, supporting the idea that real couples have a transactive memory system, unlike pretending couples. Implications for a collective interview approach that considers memory within deception detection are discussed.     

Is it possible to experimentally determine the extension of cognition?

Various analytical tools originally developed for theories of mechanistic explanation have recently been imported into the ongoing debate on the hypothesis of (extracerebrally) extended cognition (HEC). One such tool that appears particularly relevant to that debate is Craver’s mutual manipulability account of constitution (MM), most of all because it promises to settle the debate on experimental grounds. This paper investigates whether it is possible to deliver on that promise. We first find that, far from grounding an experimental evaluation of HEC, MM is conceptually incompatible with both internalist and externalist accounts of cognition. Next, we propose a suitable modification of MM, MM*, but it turns out that MM* presupposes rather than produces clarity on the extension of cognition. Moreover, subject to MM* the inference to constitution is radically empirically underdetermined. Finally, we argue that our results can be generalized and conclude that, for principled reasons, it is impossible to experimentally determine whether cognitive processes have extracerebral constituents. Determining the extension of cognition is an inherently pragmatic matter.     

社会性记忆的新领域:社会性共同提取诱发遗忘

社会性共同提取诱发遗忘以提取诱发遗忘的研究范式为基础,重点关注在社会情境中说者对听者记忆的影响,是社会性记忆研究的一个新领域。基于对不同材料类型社会性共同提取诱发遗忘研究的梳理,探讨听者参与程度、说者特征及说者与听者之间的社会关系、提取时的搜索策略、情绪效价以及个体差异因素对社会性共同提取诱发遗忘产生的影响。研究表明,社会性共同提取诱发遗忘在群体中对促进群体成员记忆趋同方面的作用以及在连续社会互动中的可传递性对集体记忆的形成有重要贡献。未来研究仍需对社会性共同提取诱发遗忘的影响因素、产生机制及相关脑机制以及应用方面做进一步探索。     

Measuring transactive memory systems in the field: scale development and validation

This study describes the development and validity testing of a field measure of transactive memory systems. Transactive memory systems are especially important for teams designed to leverage members' expertise, but field research has lagged because there are no adequate measures of the construct. The author developed and tested a 15-item scale in a laboratory sample of 124 teams, a field sample of 64 Master of Business Administration consulting teams, and a field sample of 27 teams from technology companies. Results from the present study demonstrate that the scale is internally consistent, related to alternative measures and hypothesized causes and effects, and unrelated to theoretically distinct constructs, providing evidence of convergent, criterion-related, and discriminant validity. Suggestions for improving the scale, future validity testing, and possible boundary conditions are discussed.     

Mood effects on eyewitness memory: Affective influences on susceptibility to misinformation

Does mood influence the accuracy of eyewitness recollections, and people’s susceptibility to misleading information in particular? Based on recent affect-cognition theories and research on eyewitness memory, three experiments predicted and found that positive affect promoted, and negative affect inhibited the incorporation of misleading information into eyewitness memories. This effect was obtained for both positive and negative events (Experiment 1), and for recorded as well as real-life incidents (Experiment 2). Participants had no meta-cognitive awareness of these mood effects, and affect-control instructions were ineffective in preventing them (Experiment 3). The cognitive mechanisms responsible for mood effects on eyewitness memories are discussed, and the implications of these findings for everyday memories, forensic practice and for current affect/cognition theorizing are considered.     

Cross-sectional and longitudinal analyses of everyday memory lapses in older adults

Everyday memory lapses experienced by older adults (OAs) were examined using a daily-diary checklist and retrospective questionnaire. In Experiment 1, 138 younger and 138 OAs indicated the frequency of forgetting of 16 memory lapses, and whether each occurred daily during the course of a week. OAs reported more memory lapses on the questionnaire, but not the daily diary. OAs reported more frequently forgetting names and words, while younger adults had more difficulty with appointments and personal dates. Fewer memory lapses on the daily diary were related to better performance on a laboratory-memory measure for OAs. In Experiment 2, 62 OAs returned for a five-year follow-up and endorsed experiencing more memory lapses on the daily diary compared to baseline, specifically forgetting more names and words, but not the retrospective questionnaire. Daily checklist memory lapses again correlated with the laboratory-memory measure. A daily checklist may be a viable way to assess everyday memory lapses.     

Know-how,intellectualism, and memory systems

ABSTRACT

A longstanding tradition in philosophy distinguishes between knowthatand know-how. This traditional “anti-intellectualist” view is soentrenched in folk psychology that it is often invoked in supportof an allegedly equivalent distinction between explicit and implicitmemory, derived from the so-called “standard model of memory.”In the last two decades, the received philosophical view has beenchallenged by an “intellectualist” view of know-how. Surprisingly, defenders of the anti-intellectualist view have turned to the cognitivescience of memory, and to the standard model in particular, todefend their view. Here, I argue that this strategy is a mistake. As it turns out, upon closer scrutiny, the evidence from cognitivepsychology and neuroscience of memory does not support theanti-intellectualist approach, mainly because the standard modelof memory is likely wrong. However, this need not be interpretedas good news for the intellectualist, for it is not clear that theempirical evidence necessarily supports their view either. I arguethat, currently, the philosophical debate is couched in terms thatdo not correspond to categories in psychological science. As aresult, the debate has to either be re-interpreted in a vocabularythat is amenable to experimental scrutiny, or it cannot be settledempirically.     

Interactive effects of subjective memory complaints and hypertension on learning and memory performance in the elderly

This study evaluated whether the relation between subjective memory complaints and cognitive performance is influenced by the presence of hypertension in the elderly. One hundred and five healthy older adults, 70–89 years of age, with and without hypertension treatment or diagnosis, completed a scale of subjective memory complaints. Participants were divided into those with mild memory concerns and those with minimal or no complaints. All participants completed a battery of neuropsychological tests including measures of verbal and nonverbal memory. After controlling for differences in age, gender, education, and overall intellectual ability, there were significant main effects for memory concerns and significant interactions for memory complaints and hypertension on several measures of memory performance. There were no main effects for hypertension on memory performance. Simple effects analyses of the interactions showed that the hypertensive complainers demonstrated poorer performance on measures of long-term memory and greater reliance on short-term recall than the hypertensive non-complainers. There were no differences in memory performance for the non-hypertensive groups. Among healthy elderly community-dwelling adults, those with mild subjective memory complaints in the context of hypertension demonstrated greater objective cognitive difficulties than those without hypertension as well as a greater reliance on a less efficient learning strategy. These findings suggest that memory concerns in the presence of hypertension may be important when evaluating treatment efficacy in these individuals and for identifying differences in cognitive aging.     

Cytokines and memory across the mature life span of women

Increasing evidence suggests a role of the immune system in modulation of cognition, but details on affected memory systems are largely lacking. We therefore aimed to study the relation between selected cytokines and subsets of memory, and the impact of age in these relations. From a random population-based sample (the Betula Prospective Cohort Study), 298 women (age 45-90) were studied in terms of episodic recall and recognition, semantic fluency and knowledge, and prospective memory. Circulating cytokines of relevance for cognition and aging were measured with ELISA. Levels of interleukin (IL)-6 and sIL-2R were significantly and negatively associated with most cognitive variables, while the opposite was true for IL-1β. Age shared substantial variance with both cytokines and memory, and turned most correlations non-significant when controlled for together with education, BMI and presence of disease. Interactions between age and cytokines were further analyzed in multiple regressions. For IL-6, significant negative interactions with age were found for semantic fluency (p<0.05) and prospective memory (p<0.01), and for sIL-2R in predicting semantic knowledge (p<0.05), indicating an increased negative impact of these cytokines on memory with increasing age. In conclusion, the study indicates a relation between cytokines and memory that appears to be largely mediated by age, and supports the suggestion that cytokine dysregulation with higher age may interact with cognitive aging.     

Moving memories: Behavioral synchrony and memory for self and others

Establishing and maintaining connections with others is central to a fulfilling social life. In this respect, behavioral coordination provides one avenue by which interpersonal linkages can be formed. Drawing from the dynamical systems approach, the present research explored whether temporary interpersonal connections founded on coordinated behavior influence memory for self and others. To do so, we measured participants’ incidental recall of self and other-relevant information after a period of either in-phase or anti-phase interpersonal coordination. While participants in the less stable anti-phase condition demonstrated the typical memory advantage for self-related compared to other-related information, this effect was eliminated when participant and confederate movements displayed in-phase coordination. These results are discussed with respect to the interplay between the systems that support interpersonal synchrony and basic social-cognitive processing.     

Culture impacts the magnitude of the emotion-induced memory trade-off effect

The present study assessed the extent to which culture impacts the emotion-induced memory trade-off effect. This trade-off effect occurs because emotional items are better remembered than neutral ones, but this advantage comes at the expense of memory for backgrounds such that neutral backgrounds are remembered worse when they occurred with an emotional item than with a neutral one. Cultures differ in their prioritisation of focal object versus contextual background information, with Westerners focusing more on objects and Easterners focusing more on backgrounds. Americans, a Western culture, and Turks, an Eastern-influenced culture, incidentally encoded positive, negative, and neutral items placed against neutral backgrounds, and then completed a surprise memory test with the items and backgrounds tested separately. Results revealed a reduced trade-off for Turks compared to Americans. Although both groups exhibited an emotional enhancement in item memory, Turks did not show a decrement in memory for backgrounds that had been paired with emotional items. These findings complement prior ones showing reductions in trade-off effects as a result of task instructions. Here, we suggest that a contextual-focus at the level of culture can mitigate trade-off effects in emotional memory.     

The effects of justice motivation on memory for self- and other-relevant events

We examined whether people might distort and selectively remember the past in ways that enable them to sustain a belief in a just world (BJW; Lerner, M. J. (1980). The belief in a just world: A fundamental delusion. New York: Plenum Press). In Study 1, recall of a lottery prize reflected participants’ justice concerns, such that the average lottery amount recalled was lowest when a “bad” versus “good” person won. In Study 2, an unrelated experience of just world threat (versus affirmation) enhanced biased recall of the lottery prize when the winner was undeserving. In Study 3, participants who experienced a fortuitous bad break selectively remembered more bad deeds from their recent past, whereas participants who experienced a good break selectively remembered more good deeds. Study 4 demonstrates that such selective memory biases specifically serve to portray chance outcomes as more fair. Taken together, these findings offer support for the notion that reconstructing and selectively recalling the past can serve to sustain a BJW.     

The effects of physical activity timing and complexity on episodic memory: A randomized controlled trial

The role of two types of acute physical activity (PA) bouts were assessed on young adults’ free-recall and recognition memory in two experiments, which differed in the temporal relation of PA and word encoding. Before or following training on the Rey Auditory Verbal Learning Task, participants performed a simple two-step dance, a complex four-step dance, or remained seated. Hypotheses proposed that PA prior to encoding and complex PA would enhance PA’s mnemonic benefits. Memory assessed post-PA, 24 h, and 7 days after training indicated that timing and complexity of PA did not impact free-recall or recognition memory. Findings differ from a previous study showing complex PA benefited motor learning more than simple PA (Tomporowski & Pendleton, 2018). The inconsistency may be due to different working memory processes underlying consolidation and retrieval of procedural or episodic information. Theory-based explanations regarding memory storage and retrieval are proposed to elucidate this selective process.