The spacing effect is among the most widely replicated empirical phenomena in the learning sciences, and its relevance to education and training is readily apparent. Yet successful applications of spacing effect research to education and training is rare. Computational modeling can provide the crucial link between a century of accumulated experimental data on the spacing effect and the emerging interest in using that research to enable adaptive instruction. In this paper, we review relevant literature and identify 10 criteria for rigorously (...) evaluating computational models of the spacing effect. Five relate to evaluating the theoretic adequacy of a model, and five relate to evaluating its application potential. We use these criteria to evaluate a novel computational model of the spacing effect called the Predictive Performance Equation. Predictive Performance Equation combines elements of earlier models of learning and memory including the General Performance Equation, Adaptive Control of Thought—Rational, and the New Theory of Disuse, giving rise to a novel computational account of the spacing effect that performs favorably across the complete sets of theoretic and applied criteria. We implemented two other previously published computational models of the spacing effect and compare them to PPE using the theoretic and applied criteria as guides. (shrink)

To function well in an unpredictable environment using unreliable components, a system must have a high degree of robustness. Robustness is fundamental to biological systems and is an objective in the design of engineered systems such as airplane engines and buildings. Cognitive systems, like biological and engineered systems, exist within variable environments. This raises the question, how do cognitive systems achieve similarly high degrees of robustness? The aim of this study was to identify a set of mechanisms that enhance robustness (...) in cognitive systems. We identify three mechanisms that enhance robustness in biological and engineered systems: system control, redundancy, and adaptability. After surveying the psychological literature for evidence of these mechanisms, we provide simulations illustrating how each contributes to robust cognition in a different psychological domain: psychomotor vigilance, semantic memory, and strategy selection. These simulations highlight features of a mathematical approach for quantifying robustness, and they provide concrete examples of mechanisms for robust cognition. (shrink)

In the wake of colonial fragmentation and genocide, Indigenous ‘Khoisan resurgence’ movements in South Africa have mobilised subversive forms of authenticity, including heteroglossic and inventive translanguaging from fragments of Khoekhoegowab. In our analysis of video ethnographic texts produced in collaboration with the Gamtkwa Khoisan Council (GKC) in Hankey, the birthplace of Sarah Baartman, we explore how memory, language politics, and environmental activism are interwoven in acts of linguistic citizenship that constitute the ‘rememorying’ of a history that has remained persistently obscured. (...) We argue that rememorying advances a politics of reminding which counters the Rainbow Nation’s institutionalised politics of forgetting, as well as anthropological accounts that consider Indigenous activist invocations of history as merely ‘therapeutic’. Through an engagement with the memory activism of the GKC, we identify how reconstructing word-histories, reliving historical traumas, retelling histories of sites of memory, seeing oneself mirrored in one’s ancestors, and the nexus of land, memory, and time form the basis for shared meaning-making, bringing impetus, focus, and intergenerational continuity to struggles for environmental and land justice. (shrink)

We report the identification of a recurrent, 520-kb 16p12.1 microdeletion associated with childhood developmental delay. The microdeletion was detected in 20 of 11,873 cases compared with 2 of 8,540 controls and replicated in a second series of 22 of 9,254 cases compared with 6 of 6,299 controls. Most deletions were inherited, with carrier parents likely to manifest neuropsychiatric phenotypes compared to non-carrier parents. Probands were more likely to carry an additional large copy-number variant when compared to matched controls. The clinical (...) features of individuals with two mutations were distinct from and/or more severe than those of individuals carrying only the co-occurring mutation. Our data support a two-hit model in which the 16p12.1 microdeletion both predisposes to neuropsychiatric phenotypes as a single event and exacerbates neurodevelopmental phenotypes in association with other large deletions or duplications. Analysis of other microdeletions with variable expressivity indicates that this two-hit model might be more generally applicable to neuropsychiatric disease. © 2010 Nature America, Inc. All rights reserved. (shrink)

Journal Name: Semiotica Issue: Ahead of print.

One hypothesis concerning the human dorsal anterior cingulate cortex (ACC) is that it functions, in part, to signal the occurrence of conflicts in information processing, thereby triggering compensatory adjustments in cognitive control. Since this idea was first proposed, a great deal of relevant empirical evidence has accrued. This evidence has largely corroborated the conflict-monitoring hypothesis, and some very recent work has provided striking new support for the theory. At the same time, other findings have posed specific challenges, especially concerning the (...) way the theory addresses the processing of errors. Recent research has also begun to shed light on the larger function of the ACC, suggesting some new possibilities concerning how conflict monitoring might fit into the cingulate's overall role in cognition and action. (shrink)

Why do we spend so much of our time passing on amusing anecdotes, making wisecracks,watching The Simpsons? In Inside Jokes, Matthew Hurley, DanielDennett, and Reginald Adams offer an evolutionary and cognitive perspective.

Some things are funny -- jokes, puns, sitcoms, Charlie Chaplin, The Far Side, Malvolio with his yellow garters crossed -- but why? Why does humor exist in the first place? Why do we spend so much of our time passing on amusing anecdotes, making wisecracks, watching _The Simpsons_? In _Inside Jokes_, Matthew Hurley, Daniel Dennett, and Reginald Adams offer an evolutionary and cognitive perspective. Humor, they propose, evolved out of a computational problem that arose when our long-ago ancestors were (...) furnished with open-ended thinking. Mother Nature -- aka natural selection -- cannot just order the brain to find and fix all our time-pressured misleaps and near-misses. She has to bribe the brain with pleasure. So we find them funny. This wired-in source of pleasure has been tickled relentlessly by humorists over the centuries, and we have become addicted to the endogenous mind candy that is humor. (shrink)

Cognitive control has long been one of the most active areas of computational modeling work in cognitive science. The focus on computational models as a medium for specifying and developing theory predates the PDP books, and cognitive control was not one of the areas on which they focused. However, the framework they provided has injected work on cognitive control with new energy and new ideas. On the occasion of the books' anniversary, we review computational modeling in the study of cognitive (...) control, with a focus on the influence that the PDP approach has brought to bear in this area. Rather than providing a comprehensive review, we offer a framework for thinking about past and future modeling efforts in this domain. We define control in terms of the optimal parameterization of task processing. From this vantage point, the development of control systems in the brain can be seen as responding to the structure of naturalistic tasks, through the filter of the brain systems with which control directly interfaces. This perspective lays open a set of fascinating but difficult research questions, which together define an important frontier for future computational research. (shrink)

Contempt is typically studied as a uniquely human moral emotion. However, this approach has yielded inconclusive results. We argue this is because the folk affect concept “contempt” has been inaccurately mapped onto basic affect systems. “Contempt” has features that are inconsistent with a basic emotion, especially its protracted duration and frequently cold phenomenology. Yet other features are inconsistent with a basic attitude. Nonetheless, the features of “contempt” functionally cohere. To account for this, we revive and reconfigure thesentimentconstruct using the notion (...) of evolved functional specialization. We develop the Attitude–Scenario–Emotion model of sentiments, in which enduring attitudes represent others' social-relational value and moderate discrete emotions across scenarios. Sentiments are functional networks of attitudes and emotions. Distinct sentiments, includinglove,respect,like,hate, andfear, track distinct relational affordances, and each is emotionally pluripotent, thereby serving both bookkeeping and commitment functions within relationships. The sentimentcontemptis an absence ofrespect; from cues to others' low efficacy, it represents them as worthless and small, mutingcompassion,guilt, andshameand potentiatinganger,disgust, andmirth. This sentiment is ancient yet implicated in the ratcheting evolution of human ultrasocialty. The manifolds of thecontemptnetwork, differentially engaged across individuals and populations, explain the features of “contempt,” its translatability, and its variable experience as “hot” or “cold,” occurrent or enduring, and anger-like or disgust-like. This rapprochement between psychological anthropology and evolutionary psychology contributes both methodological and empirical insights, with broad implications for understanding the functional and cultural organization of social affect. (shrink)

This article proposes three states in an actor-network and a global/local distinction among actants. This theoretical framework is applied to two invention networks: one created by an inventor of solar heating systems and another created by a designer who wanted to create an environmentally sustainable furniture fabric. Both solar inventor and fabric designer wanted to develop technologies that would improve the environment and also make money. The article concludes by considering whether invention networks that intend to turn “good into gold” (...) have to evolve a shared representation or whether it is sufficient for a new design to serve as a boundary object for actants. (shrink)

Activists’ investigations of animal cruelty expose the public to suffering that they may otherwise be unaware of, via an increasingly broad-ranging media. This may result in ethical dilemmas and a wide range of emotions and reactions. Our hypothesis was that media broadcasts of cruelty to cattle in Indonesian abattoirs would result in an emotional response by the public that would drive their actions towards live animal export. A survey of the public in Australia was undertaken to investigate their reactions and (...) responses to. The most common immediate reaction was feeling pity for the cattle. Women were more likely than men to feel sad or angry. Most people discussed the media coverage with others afterwards but fewer than 10 % contacted politicians or wrote to newspapers. We conclude that the public were emotionally affected by the media coverage of cruelty to cattle but that this did not translate into significant behavioral change. We recommend that future broadcasts of animal cruelty should advise the public of contact details for counseling and that mental health support contacts, and information should be included on the websites of animal advocacy groups to acknowledge the disturbing effect animal cruelty exposes can have on the public. (shrink)

In her essay examining how rhetoric attends to an “explicitly nonhermeneutic, ethical dimension” of the relationship between self and other, Diane Davis argues that the act of attunement is vital to the rhetorical challenge of “keep[ing] hermeneutic interpretation from absorbing the strictly rhetorical gesture of the [other’s] approach, which interrupts the movement of appropriation and busts any illusion of having understood” (2005, 208, original hers). This comment is part of a larger conversation about ethical action in the face of radical (...) alterity, those marks and gestures of the other that “communicate more than I can comprehend, a ‘surplus’ of alterity that I can neither appropriate nor abdicate” (2005 .. (shrink)

This study is constituted by three components. The first will examine how Chinese scholars and Western sinologists have characterized modern Chinese intellectual history and what directions they have proposed for future intellectual development in China. The second section will construct a hermeneutic model of intercultural understanding and discuss its implications for the evaluation of modern Chinese intellectual development. I will show that an understanding of modern Chinese intellectual development in hermeneutical terms can circumventing many of the entrenched and misleading dichotomies (...) in the field. In the third section, I will investigate three intercultural difficulties that modern and contemporary Chinese intellectuals face in the study of their own society and tradition. The recognition of these intercultural difficulties — which is made possible by re-conceptualizing local intellectual development in hermeneutical terms — put into relief the plight and possibilities of local intellectual development in non-Western localities. (shrink)

We use conversation analysis and a research design modeled on speed dating to examine college-aged speed daters’ assessments of their experience of this activity. In getting acquainted, participants solicit and provide accounts of the experience that treat it delicately and impersonally. Further, participants collaborate to claim a shared naivete toward speed dating, thereby presenting themselves as ordinary college students having a new experience. Non-standard assessment sequences throw such patterned practices into relief, and feature the disclosure of personal troubles occasioned by (...) the experience. Our findings have implications for the study of assessments, impression management, acquaintanceship, and relationship initiation. (shrink)

Cook et al. laudably call for careful comparative research into the development of mirror neurons. However, they do so within an impoverished evolutionary framework that does not clearly distinguish ultimate and proximate causes and their reciprocal relations. As a result, they overlook evidence for the reliable develop of mirror neurons in biological and cultural traits evolved to work through them.

The target article argues that contempt is a sentiment, and that sentiments are the deep structure of social affect. The 26 commentaries meet these claims with a range of exciting extensions and applications, as well as critiques. Most significantly, we reply that construction and emergence are necessary for, not incompatible with, evolved design, while parsimony requires explanatory adequacy and predictive accuracy, not mere simplicity.

This study analyzes and evaluates the social thought of Dai Zhen. It interprets Dai’s thought in terms of a critique of ideology that problematizes Song dynasty Neo-Confucian moral vocabulary. Dai thinks that social critique is the ultimate goal of scholarship and he was explicit about this belief. This study will show that he analyzes the negative social consequences of Song Neo-Confucian moral discourse in sociologically sophisticated ways, and that he has developed this understanding through a series of works that began (...) with Yuanshan (The Origin of Goodness) and ended with Mengzi Ziyi Suzheng (Commentaries on the Meaning of Terms in Mencius). Contemporary social theorist and cultural critics should find Dai’s work relevant because his deconstruction of the reified moral vocabulary of his times is postmodern in spirit and he elucidated how discourses can concretely impact on society. (shrink)

Undercover filming is a method commonly used by animal activist groups to expose animal cruelty and it is important to consider the effects of publically releasing video footage of cruel practices on the viewers’ mental health. Previously, we reported that members of the Australian public were emotionally distressed soon after viewing media broadcasts of cruelty to Australian cattle exported for slaughter in Indonesia in 2011. To explore if there were any long term impacts from exposure to media on this issue, (...) a self-selecting group of 15 people who were exposed to a documentary exposé of the cruelty were re-interviewed 12 months later. Nearly all recalled their strong initial reaction to the footage. Approximately one half of the respondents who initially had had a strong emotional reaction to the footage reported negative reactions that were still strong even after this period of time. They reported potential triggers for these feelings. Of the rest, some managed to internalise their feelings. Approximately one half of respondents were unaware of continued live export exposés, suggesting less prominent media coverage. Despite the aversion and repulsion reported after viewing the initial coverage, most respondents said they would choose to watch another broadcast of animal cruelty and nearly all supported undercover investigations as a means of revealing cruelty to animals. We conclude that many people viewing footage of cruelty to animals will have long term memory of this, but that they would prefer to be informed about the issues and not be protected from them. (shrink)

Horizontal transfer (HT) is the transmission of genetic material between non‐mating species, a phenomenon thought to occur rarely in multicellular eukaryotes. However, many transposable elements (TEs) are not only capable of HT, but have frequently jumped between widely divergent species. Here we review and integrate reported cases of HT in retrotransposons of the BovB family, and DNA transposons, over a broad range of animals spanning all continents. Our conclusions challenge the paradigm that HT in vertebrates is restricted to infective long (...) terminal repeat (LTR) retrotransposons or retroviruses. This raises the possibility that other non‐LTR retrotransposons, such as L1 or CR1 elements, believed to be only vertically transmitted, can horizontally transfer between species. Growing evidence indicates that the process of HT is much more general across different TEs and species than previously believed, and that it likely shapes eukaryotic genomes and catalyses genome evolution. (shrink)