Topics in Cognitive Science最新文献

This study investigates the cultural transmission of mushroom knowledge through an iterated learning paradigm, focusing on how content-based and model-based biases shape transmission across generations. Norwegian participants, predominantly mycophobic, were arranged in seven linear transmission chains of eight generations each, interacting in dyads. A trained confederate provided initial information about 24 mushrooms regarding edibility (poisonous/edible/inedible), accompanying facts (death/survival/neutral), and the information source's familiarity (familiar/unfamiliar). Results revealed a strong bias toward labeling mushrooms as poisonous, reflecting cultural caution. Model-based biases (familiarity) did not significantly influence transmission, while content-based biases (fact type) affected early fidelity, especially survival-related facts. Over generations, details beyond edibility were progressively lost, with transmission converging on simplified edibility judgments. This suggests cumulative cultural simplification prioritizing survival-relevant information. These findings imply that cultural attitudes influence the transmission of high-risk content, amplifying caution across generations. Despite limitations, this study offers novel empirical data on mushroom knowledge transmission in a mycophobic context and lays the groundwork for cross-cultural comparisons with mycophilic societies.

The majority of Pleistocene figurative cave art in Western Europe consists of line drawings depicting large herbivores from the side view, and outlines were sometimes abbreviated to the head-neck-dorsal line. It is often assumed that the side view was used because it facilitates animal recognition compared to other views, and that abbreviated outlines were used as an economic mode of representation compared to complete outlines. To investigate these claims, we present an ecological approach to picture perception and discuss its implications for the study of cave art. We then report an experiment conducted to examine the roles of perspective and abbreviation in cave art in relation to two roles: communicating about specific animals and inducing aesthetic appreciation. Participants were shown outlines of animals (bison, horse, hind, and ibex), which varied in terms of perspective (frontal, fronto-oblique, side, rear-oblique, or rear view) and abbreviation (complete or abbreviated). They were instructed to quickly identify them and to rate their aesthetic value. We found that side and oblique views provide equivalent information, equally facilitating recognition and inducing aesthetic appreciation; and that the information from the side and oblique views is richer than the frontal and rear views. We also found that complete outlines facilitate recognition and induce more aesthetic appreciation compared to abbreviated outlines. Contrary to common assumptions, side views are not simply motivated by ease of recognition. Facts of ecological optics, production effort, and available drawing techniques must also be considered. Abbreviation may also be contingent on participation in a shared history of communicative practices and on production effort, as its possible prevalence further from cave entrances might partly be motivated by the need to draw quickly, as the light was scarce. Our experimental results point to a complex interplay of perceptual, technical, and cultural factors in the development of early figurative art and show how an ecological approach to (picture) perception can bring new insights to inform these discussions.

It has been argued that fungi have cognitive capacities, and even conscious experiences. While these arguments risk ushering in unproductive disputes about how words like "mind," "cognitive," "sentient," and "conscious" should be used, paying close attention to key properties of fungal life can also be uncontroversially productive for cognitive science. Attention to fungal life can, for example, inspire new, potentially fruitful directions of research in cognitive science. Here, I introduce a concept of cognitive symbiosis whose significance for cognitive science becomes salient when we consider the centrality of symbioses in the life of fungi. Like fungi, virtually all cognitive systems live in close association with other kinds of cognitive systems, and this living together can have substantive psychological consequences. Expanding the scope of cognitive science to study a wide variety of cognitive symbioses underwrites the importance of biology and evolution in understanding minds.

Are people able to tell apart a random configuration of lines and dots from a work of art? Previous studies have shown that untrained viewers can distinguish between abstract art made by professional artists, children, or apes. Pieces made by artists were perceived as more intentionally made and organized than the rest. However, these studies used paintings by prominent abstract artists (e.g., Mark Rothko) as stimuli, which in any case showed that people were able to recognize high-quality paintings made by trained artists, not "any" human. In this study, we presented participants with artworks by untrained human artists versus artworks made by captive chimpanzees in a visual discrimination task. In Study 1, participants viewed sets of human- and non-human-made paintings and were asked to identify the artist as human or ape. In Study 2, they rated the paintings on several criteria: intentionality, organization, balance, and complexity. We found that participants: (1) successfully distinguished between human-made and non-human-made paintings; (2) reported perceiving more balance, organization, and intentionality in human-made paintings; (3) preferred stimuli, which ranked higher in intentionality. We also identified balance, complexity, and organization as key features that influence preference for abstract artworks. Overall, our results show that even non-figurative paintings made by adults untrained in the visual arts are perceived as intentionally made, suggesting people spontaneously produce and perceive cues of intentionality, generating an implicit human signature in visual art.

Contextual information and prior knowledge facilitate perceptual processing, improving our recognition of even distorted or obstructed visual inputs. As a result, neuronal processing elicited by identical sensory inputs varies depending on the context in which we encounter those inputs. This modulation is in line with predictive processing accounts of vision, which suggest that higher brain areas use internal models of the world to interpret sensory inputs. Cortical feedback signals encoding predictions about those inputs are propagated back down to sensory areas. As such, acquiring knowledge should enhance the internal models that we use to resolve sensory ambiguities, and feedback signals should encode more accurate estimates of sensory inputs. We investigated how knowledge updates contextual feedback processing in V1 by first generating Mooney images, ambiguous two-tone images which are difficult to recognize without prior knowledge of the image content. Across two behavioral experiments and one 3T functional magnetic resonance imaging (fMRI) experiment, participants acquired knowledge either related to the general Mooney image category or Mooney image-specific information. During fMRI, we used partially occluded Mooney images to investigate if contextual feedback signals in early visual areas are modulated after acquiring a high-level interpretation of the images. We show that general information about image categories is sufficient to improve recognition of ambiguous images. We also show that perceptual priors containing image-specific information modulate contextual feedback processing in the early visual areas, in response to previously ambiguous images.

Language is perhaps the most complex and sophisticated of cognitive faculties in humans. The neurobiological basis of language in the healthy, aging brain remains a relatively neglected topic, in particular with respect to basic aspects of grammar and meaning. In the face of major changes to the physiological infrastructure underpinning perception and higher cognition, core language functions are frequently retained in the elderly. Meanwhile, neurolinguistic models of language are often tested and refined with reference to system abnormalities (as in cases of language deficits or aphasias), but rarely with reference to the aging brain. This article outlines some major developmental stages in the neural architecture of language, and reviews the current state-of-the-art in research concerning how aging can result in distinct neural signatures of language. Certain differences in basic phrase and sentence processing strategies between children, young adults, and older adults can partly be explained by neurophysiological differences, and also divergences in core components of brain rhythms. Particular focus is placed here on spatiotemporal dynamics and neural oscillations, inter-brain coupling, 1/f neural noise, and neural entrainment. Exploring how language function changes with age can ultimately provide insights into the maturation and decay of basic properties of cortical computation.

Languages are neither designed in classrooms nor drawn from dictionaries-they are products of human minds and human interactions. However, it is challenging to understand how structure grows in these circumstances because generations of use and transmission shape and reshape the structure of the languages themselves. Laboratory studies on language emergence investigate the origins of language structure by requiring participants, prevented from using their own natural language(s), to create a novel communication system and then transmit it to others. Because the participants in these lab studies are already speakers of a language, it is easy to question the relevance of lab-based findings to the creation of natural language systems. Here, we take the findings from a lab-based language emergence paradigm and test whether the same pattern is also found in a new natural language: Nicaraguan Sign Language. We find evidence that signers of Nicaraguan Sign Language may show the same biases seen in lab-based language emergence studies: (1) they appear to condition word order based on the semantic dimension of intensionality and extensionality, and (2) they adjust this conditioning to satisfy language-internal order constraints. Our study adds to the small, but growing literature testing the relevance of lab-based studies to natural language birth, and provides convincing evidence that the biases seen in the lab play a role in shaping a brand new language.

Our hands are always with us and are used for communication all over the world. When children do not have an established language model to learn from, they use their hands to gesture, and these gestures take on the forms of language. In this role, the hands reveal the fundamental properties of the mind that give shape to language. When children do learn an established language, they again use their hands to gesture. These gestures do not look like language but form an integrated system with language. In this role, the hands can convey ideas not found in the language they accompany. In both contexts, gesture provides a clear view of the mind hidden in our hands.

Recent theoretical work has argued that moral psychology can be understood through the lens of "resource rational contractualism." The view posits that the best way of making a decision that affects other people is to get everyone together to negotiate under idealized conditions. The outcome of that negotiation is an arrangement (or "contract") that would lead to mutual benefit. However, this ideal is seldom (if ever) practical given the resource demands (time, information, computational processing power) that are required. Instead, the theory proposes that moral psychology is organized around a series of resource-rational approximations of the contractualist ideal, efficiently trading off between more resource-intensive, accurate mechanisms and less. This paper presents empirical evidence and a cognitive model that test a central claim of this view: when the stakes of the situation are high, then more resource-intensive processes are engaged over more approximate ones. We present subjects with a case that can be judged using virtual bargaining-a resource-intensive process that involves simulating what two people would agree to-or by simply following a standard rule. We find that about a third of our participants use the resource-rational approach, flexibly switching to virtual bargaining in high-stakes situations, but deploying the simple rule when stakes are low. A third of the participants are best modeled as consistently using the strict rule-based approach and the remaining third as consistently using virtual bargaining. A model positing the reverse resource-rational hypothesis (that participants use more resource-intensive mechanisms in lower stakes situations) fails to capture the data.

Decades of research have established that learners benefit when instruction includes hand gestures. This benefit is seen when learners watch an instructor gesture, as well as when they are taught or encouraged to gesture themselves. However, there is substantial individual variability with respect to this phenomenon-not all individuals benefit equally from gesture instruction. In the current paper, we explore the sources of this variability. First, we review the existing research on individual differences that do or do not predict learning from gesture instruction, including differences that are either context-dependent (linked to the particular task at hand) or context-independent (linked to the learner across multiple tasks). Next, we focus on one understudied measure of individual difference: the learner's own spontaneous gesture rate. We present data showing rates of "non-gesturers" across a number of studies and we provide theoretical motivation for why this is a fruitful area for future research. We end by suggesting ways in which research on individual differences will help gesture researchers to further refine existing theories and develop specific predictions about targeted gesture intervention for all kinds of learners.