This paper, in opposition to the standard theories of social cognition found in psychology and cognitive science, defends the idea that direct perception plays an important role in social cognition. The two dominant theories, theory theory and simulation theory , both posit something more than a perceptual element as necessary for our ability to understand others, i.e., to “mindread” or “mentalize.” In contrast, certain phenomenological approaches depend heavily on the concept of perception and the idea that we have a direct (...) perceptual grasp of the other person’s intentions, feelings, etc. This paper explains precisely what the notion of direct perception means, offers evidence from developmental studies, and proposes a non-simulationist interpretation of the neuroscience of mirror systems. (shrink)

Knowledge of the complexity of human communication comes from three main sources – (i) studies of the linguistics and neuropsychology of dysfunction after brain injury; (ii) studies of the development of social communication in infancy, and its dysfunction in developmental psychopathologies; and (iii) the evolutionary history of human communicative interaction. Together, these suggest the need for a broad, integrated theory of communication of which language forms a small but critical component.

The first work to offer a comprehensive pragmatist anthropology focusing on sensibility, habits, and human experience as contingently yet irreversibly enlanguaged.

Music and language are universal human abilities with many apparent similarities relating to their acoustics, structure, and frequent use in social situations. We might therefore expect them to be understood and processed similarly, and indeed an emerging body of research suggests that this is the case. But the focus has historically been on the individual, looking at the passive listener or the isolated speaker or performer, even though social interaction is the primary site of use for both domains. Nonetheless, an (...) important goal of emerging research is to compare music and language in terms of acoustics and structure, social interaction, and functional origins to develop parallel accounts across the two domains. Indeed, a central aim of both of evolutionary musicology and language evolution research is to understand the adaptive significance or functional origin of human music and language. An influential proposal to emerge in recent years has been referred to as the social bonding hypothesis. Here, within a comparative approach to animal communication systems, I review empirical studies in support of the social bonding hypothesis in humans, non-human primates, songbirds, and various other mammals. In support of this hypothesis, I review six research fields: (i) the functional origins of music; (ii) the functional origins of language; (iii) mechanisms of social synchrony for human social bonding; (iv) language and social bonding in humans; (v) music and social bonding in humans; and (vi) pitch, tone and emotional expression in human speech and music. I conclude that the comparative study of complex vocalizations and behaviors in various extant species can provide important insights into the adaptive function(s) of these traits in these species, as well as offer evidence-based speculations for the existence of “musilanguage” in our primate ancestors, and thus inform our understanding of the biology and evolution of human music and language. (shrink)

A number of theories about the origins of musicality have incorporated biological and social perspectives. Darwin argued that musicality evolved by sexual selection, functioning as a courtship display in reproductive partner choice. Darwin did not regard musicality as a sexually dimorphic trait, paralleling evidence that both sexes produce and enjoy music. A novel research strand examines the effect of musicality on sexual attraction by acknowledging the importance of facial attractiveness. We previously demonstrated that music varying in emotional content increases the (...) perceived attractiveness and dating desirability of opposite-sex faces only in females, compared to a silent control condition. Here, we built upon this approach by presenting the person depicted (target) as the performer of the music (prime), thus establishing a direct link. We hypothesized that musical priming would increase sexual attraction, with high-arousing music inducing the largest effect. Musical primes (25 s, piano solo music) varied in arousal and pleasantness, and targets were photos of other-sex faces of average attractiveness and with neutral expressions (2 s). Participants were 35 females and 23 males (heterosexual psychology students, single, and no hormonal contraception use) matched for musical background, mood, and liking for the music used in the experiment. After musical priming, females’ ratings of attractiveness and dating desirability increased significantly. In males, only dating desirability was significantly increased by musical priming. No specific effects of music-induced pleasantness and arousal were observed. Our results, together with other recent empirical evidence, corroborate the sexual selection hypothesis for the evolution of human musicality. (shrink)

This essay offers a new perspective on Darwin’s evolutionary theorizing on the human arts of music, poetry and rhetoric. It argues that Darwin’s theory of the human arts is primarily a theory of their effects on our emotions. Contrary to the topical understanding Darwin nowhere claimed that the music of homo sapiens sapiens used to be performed, let alone still is performed in the service of sexual success. He exclusively stipulated that some such evolutionary attractor might have shaped the vocal (...) arts of our «half-human ancestors». In the human music proper, by contrast, he sees this archaic function only persist as a cognitively vague, yet intensely felt «mental reversion to the emotions and thoughts of a long-past age», as widely unconscious and barely decodable memory traces. Read in Gouldian terms the evolved proto-human «musical arts» have thus been «exapted», i.e. lost their presumable biologically adaptive function of evolutionary origin, yet have survived this exaptation and ever since serve new communicative functions while retaining some of their archaic affective power. Moreover, the arts of rhetoric and poetry, by using the hypothetically older neural and vocal architecture of singing (with regards to linguistic prosody, meter, and cadences), coopt this «exapted» emotional power of music into the novel field of symbolic language. Darwin’s understanding of rhetoric and poetry is shown to entail not only explicit references, but also many implicit similarities both with Greek and Latin rhetoric and poetics and, more specifically, with Romanticist assumptions regarding the origin and function of poetry. (shrink)

Any account of “what is special about the human brain” (Passingham 2008) must specify the neural basis of our unique ability to produce speech and delineate how these remarkable motor capabilities could have emerged in our hominin ancestors. Clinical data suggest that the basal ganglia provide a platform for the integration of primate-general mechanisms of acoustic communication with the faculty of articulate speech in humans. Furthermore, neurobiological and paleoanthropological data point at a two-stage model of the phylogenetic evolution of this (...) crucial prerequisite of spoken language: (i) monosynaptic refinement of the projections of motor cortex to the brainstem nuclei that steer laryngeal muscles, presumably, as part of a “phylogenetic trend” associated with increasing brain size during hominin evolution; (ii) subsequent vocal-laryngeal elaboration of cortico-basal ganglia circuitries, driven by human-specificFOXP2mutations.;>This concept implies vocal continuity of spoken language evolution at the motor level, elucidating the deep entrenchment of articulate speech into a “nonverbal matrix” (Ingold 1994), which is not accounted for by gestural-origin theories. Moreover, it provides a solution to the question for the adaptive value of the “first word” (Bickerton 2009) since even the earliest and most simple verbal utterances must have increased the versatility of vocal displays afforded by the preceding elaboration of monosynaptic corticobulbar tracts, giving rise to enhanced social cooperation and prestige. At the ontogenetic level, the proposed model assumes age-dependent interactions between the basal ganglia and their cortical targets, similar to vocal learning in some songbirds. In this view, the emergence of articulate speech builds on the “renaissance” of an ancient organizational principle and, hence, may represent an example of “evolutionary tinkering” (Jacob 1977). (shrink)

Our target article proposed that language production and comprehension are interwoven, with speakers making predictions of their own utterances and comprehenders making predictions of other people's utterances at different linguistic levels. Here, we respond to comments about such issues as cognitive architecture and its neural basis, learning and development, monitoring, the nature of forward models, communicative intentions, and dialogue.

For a biological anthropologist interested in the prehistory of religion, J. Wentzel van Huyssteen's book is welcome and resonant. Van Huyssteen's central thesis is that humans' capacity for spirituality emerges from a transformation of cognition and emotions that takes place in the symbolic realm, within Homo sapiens and apart from biology. To his thesis I bring to bear three areas of response: the abundant cognitive and emotional capacities of living apes and extinct hominids; the role of symbolic ritual in the (...) evolutionary history of Homo sapiens; and the closely intertwined nature of biology and culture in the workings of evolutionary change. (shrink)

At the earliest break of ancient hominins from their primate relatives in vocal communication, we propose a selection pressure on vocal fitness signaling by hominin infants. Exploratory vocalizations, not tied to expression of distress or immediate need, could have helped persuade parents of the wellness and viability of the infants who produced them. We hypothesize that hominin parents invested more in infants who produced such signals of fitness plentifully, neglecting or abandoning them less often than infants who produced the sounds (...) less frequently. Selection for such exploratory vocalization provided a critically important inclination and capability relevant to language, we reason, because the system that encouraged spontaneous vocalization also made vocalization functionally flexible to an extent that has not been observed in any other animal. Although this vocal flexibility did not by itself create language, it provided an essential foundation upon which language would evolve through a variety of additional steps. In evaluating this speculation, we consider presumable barriers to evolving language that are thought to be implications of Darwinian Theory. It has been claimed that communication always involves sender self-interest and that self-interest leads to deceit, which is countered through clever detection by receivers. The constant battle of senders and receivers has been thought to pose an insuperable challenge to honest communication, which has been viewed as a requirement of language. To make communication honest, it has been proposed that stable signaling requires costly handicaps for the sender, and since language cannot entail high cost, the reasoning has suggested an insurmountable obstacle to the evolution of language. We think this presumed honesty barrier is an illusion that can be revealed by recognition of the fact that language is not inherently honest and in light of the distinction between illocutionary force and semantics. Our paper also considers barriers to the evolution of language (not having to do with honesty) that we think may have actually played important roles in preventing species other than humans from evolving language. (shrink)

Dance has traditionally been viewed from a Eurocentric perspective as a mode of self-expression that involves the human body moving through space, performed for the purposes of art, and viewed by an audience. In this Hypothesis and Theory article, we synthesize findings from anthropology, sociology, psychology, dance pedagogy, and neuroscience to propose The Synchronicity Hypothesis of Dance, which states that humans dance to enhance both intra- and inter-brain synchrony. We outline a neurocentric definition of dance, which suggests that dance involves (...) neurobehavioral processes in seven distinct areas including sensory, motor, cognitive, social, emotional, rhythmic, and creative. We explore The Synchronicity Hypothesis of Dance through several avenues. First, we examine evolutionary theories of dance, which suggest that dance drives interpersonal coordination. Second, we examine fundamental movement patterns, which emerge throughout development and are omnipresent across cultures of the world. Third, we examine how each of the seven neurobehaviors increases intra- and inter-brain synchrony. Fourth, we examine the neuroimaging literature on dance to identify the brain regions most involved in and affected by dance. The findings presented here support our hypothesis that we engage in dance for the purpose of intrinsic reward, which as a result of dance-induced increases in neural synchrony, leads to enhanced interpersonal coordination. This hypothesis suggests that dance may be helpful to repattern oscillatory activity, leading to clinical improvements in autism spectrum disorder and other disorders with oscillatory activity impairments. Finally, we offer suggestions for future directions and discuss the idea that our consciousness can be redefined not just as an individual process but as a shared experience that we can positively influence by dancing together. (shrink)

Across languages, lexical items specific to infant‐directed speech (i.e., ‘baby‐talk words’) are characterized by a preponderance of onomatopoeia (or highly iconic words), diminutives, and reduplication. These lexical characteristics may help infants discover the referential nature of words, identify word referents, and segment fluent speech into words. If so, the amount of lexical input containing these properties should predict infants’ rate of vocabulary growth. To test this prediction, we tracked the vocabulary size in 47 English‐learning infants from 9 to 21 months (...) and examined whether the patterns of growth can be related to measures of iconicity, diminutives, and reduplication in the lexical input at 9 months. Our analyses showed that both diminutives and reduplication in the input were associated with vocabulary growth, although measures of iconicity were not. These results are consistent with the hypothesis that phonological properties typical of lexical input in infant‐directed speech play a role in early vocabulary growth. (shrink)

Currently, production and comprehension are regarded as quite distinct in accounts of language processing. In rejecting this dichotomy, we instead assert that producing and understanding are interwoven, and that this interweaving is what enables people to predict themselves and each other. We start by noting that production and comprehension are forms of action and action perception. We then consider the evidence for interweaving in action, action perception, and joint action, and explain such evidence in terms of prediction. Specifically, we assume (...) that actors construct forward models of their actions before they execute those actions, and that perceivers of others' actions covertly imitate those actions, then construct forward models of those actions. We use these accounts of action, action perception, and joint action to develop accounts of production, comprehension, and interactive language. Importantly, they incorporate well-defined levels of linguistic representation. We show how speakers and comprehenders use covert imitation and forward modeling to make predictions at these levels of representation, how they interweave production and comprehension processes, and how they use these predictions to monitor the upcoming utterances. We show how these accounts explain a range of behavioral and neuroscientific data on language processing and discuss some of the implications of our proposal. (shrink)

Why do humans make music? Theories of the evolution of musicality have focused mainly on the value of music for specific adaptive contexts such as mate selection, parental care, coalition signaling, and group cohesion. Synthesizing and extending previous proposals, we argue that social bonding is an overarching function that unifies all of these theories, and that musicality enabled social bonding at larger scales than grooming and other bonding mechanisms available in ancestral primate societies. We combine cross-disciplinary evidence from archeology, anthropology, (...) biology, musicology, psychology, and neuroscience into a unified framework that accounts for the biological and cultural evolution of music. We argue that the evolution of musicality involves gene–culture coevolution, through which proto-musical behaviors that initially arose and spread as cultural inventions had feedback effects on biological evolution because of their impact on social bonding. We emphasize the deep links between production, perception, prediction, and social reward arising from repetition, synchronization, and harmonization of rhythms and pitches, and summarize empirical evidence for these links at the levels of brain networks, physiological mechanisms, and behaviors across cultures and across species. Finally, we address potential criticisms and make testable predictions for future research, including neurobiological bases of musicality and relationships between human music, language, animal song, and other domains. The music and social bonding hypothesis provides the most comprehensive theory to date of the biological and cultural evolution of music. (shrink)

It is well known that John Dewey was very far from embracing the traditional idea of cognition as something happening inside one’s own mind and consisting in a pictorial representation of the alleged purely external reality out there. His position was largely convergent with enactivist accounts of cognition as something based in life and consisting in human actions within a natural environment. The paper considers Dewey’s conception of cognition by focusing on its potential contributions to the current debate with enactivism. (...) It claims that Dewey’s anti-substantial, continuistic, and emergentistic conception of the mind as a typically human conduct pulls the rug out of the idea of cognition as representation, as well as pushes the current discussion towards a serious reconsideration of representationalist assumptions about conceptuality and language. The paper emphasises that Dewey—differently from enactivists—frames the role of cognition within experience: he argues that cognition concerns those intermediate phases of our experiences of the world which are characterised by an indeterminate or troubled situation, because he claims that human beings’ interactions with their own environment are qualitatively richer and broader than cognition, including as they do many different and intertwined modes of experience. Finally, the author suggests that a coherent development of Dewey’s lines of thought should avoid rigid distinctions and hierarchies between lower and higher degrees of cognition in humans, which are still maintained in certain forms of radical enactivism. Differently, we should consider the impact of the cultural and broadly linguistic configuration of the human–environment even on perception, motor action, and affective sensibility. (shrink)

This article focuses on claims about the origin and evolution of language from the point of view of the formalist–functionalist debate in linguistics. In linguistics, an account of a grammatical phenomenon is considered “formal” if it accords center stage to the structural properties of that phenomenon, and “functional” if it appeals to the language user's communicative needs or to domain‐general human capacities. The gulf between formalism and functionalism has been bridged in language evolution research, in that some leading formalists, Ray (...) Jackendoff for one, appeal to functional mechanisms such as natural selection. In Jackendoff's view, the biological evolution of language has proceeded in stages, each stage improving communicative efficiency. This article calls into question that idea, pointing to the fact that well‐understood purely historical processes suffice to explain the emergence of many grammatical properties. However, one central aspect of formalist linguistic theorizing—the idea of the autonomy of syntax—poses a challenge to the idea, central to most functionalist approaches, that the nature of grammar is a product of purely historical (as opposed to biological) evolution. The article concludes with a discussion of the origins of the autonomy of syntax, speculating that it may well have arisen over evolutionary (as opposed to historical) time. (shrink)

Drawing on convergent work in a broad range of disciplines, this article uses the tipping point paradigm to frame a new account of how early human ancestors may have first broken free from, as Bickerton calls it, the “prison of animal communication.” Under building pressure for an enhanced signaling system capable of supporting joint attentional-intentional activities, a cultural tradition of disambiguated indexical pointing (a finger point disambiguated by a facial expression, vocalization, or other gesture), combined with increasingly sophisticated mindreading circuitry (...) and prosocial tendencies, may have sparked the first in the series of biocultural explosions that led from a simple protolanguage to fully modern human language. This account successfully integrates at least ten other competing hypotheses, and is shown to pass nine important tests that have been proposed for language origin scenarios of its type. (shrink)

Humans spend large portions of their time and energy talking to one another, yet it remains unclear whether this activity is primarily selfish or altruistic. Here, it is shown how parent‐of‐origin specific gene expression—or “genomic imprinting”—may provide an answer to this question. First, it is shown why, regarding language, only altruistic or selfish scenarios are expected. Second, it is pointed out that an individual's maternal‐origin and paternal‐origin genes may have different evolutionary interests regarding investment into language, and that this intragenomic (...) conflict may drive genomic imprinting which—as the direction of imprint depends upon whether investment into language is relatively selfish or altruistic—may be used to discriminate between these two possibilities. Third, predictions concerning the impact of various mutations and epimutations at imprinted loci on language pathologies are derived. In doing so, a framework is developed that highlights avenues for using intragenomic conflicts to investigate the evolutionary drivers of language. (shrink)

Previous research suggests that mastering languages with distinct rather than similar rhythmic properties enhances musical rhythmic perception. This study investigates whether learning a second language (L2) enhances the perception of musical rhythmic variation in general, regardless of first and second languages’ rhythmic properties. Additionally, we investigated whether this perceptual enhancement could be alternatively explained by exposure to musical rhythmic complexity, such as the use of compound meter in Turkish music. Finally, it investigates if an enhancement of musical rhythmic perception could (...) be observed among L2 learners whose first language relies heavily on pitch information, as is the case with tonal languages. Therefore, we tested Turkish, Dutch and Mandarin L2 learners of English and Turkish monolinguals on their ability to perceive musical rhythmic variation. Participants’ phonological and working memory capacities, melodic aptitude, years of formal musical training and daily exposure to music were assessed to account for cultural and individual differences which could impact their rhythmic ability. Our results suggest that mastering a second language rather than exposure to musical rhythmic complexity could explain individuals’ enhanced perception of musical rhythmic variation. An even stronger enhancement of musical rhythmic perception was observed for L2 learners whose first and second languages differ regarding their rhythmic properties, as enhanced performance of Mandarin and Turkish in comparison with Dutch L2 learners of English seem to suggest. Our findings provide further support for a cognitive transfer between the language and music domain, which may find its grounds on a common evolutionary basis. (shrink)

This study investigated person perception in respect of variables associated with affect in music following motor synchronization to music. Participants were tested in a task involving stepping with a researcher to the beat of slow or fast music in major or minor mode, following which measures concerning the synchronised partner were collected. Significant effects were found only for the ‘likeability’ measure, modulated by gender, suggesting that variables associated with affect perception in music, such as mode and tempo appear relevant for (...) person perception in a synchronization task in ways that differ for men and women. The results of this ‘proof of concept’ study indicate the need for further research on the effect of motor synchronization based on ecologically valid musical interaction tasks. (shrink)

Gesellschaftskritik, or social philosophy that aims to provide firm criticism of pathological social practices, requires normatively grounded evaluative principles. In this article, we assess different possibilities for such principles with focus on a model that takes specific patterns of intersubjective interaction as its point of reference. We argue that in order to understand the full significance of this ‘intersubjective turn’ for social philosophy, and to strengthen the normative foundation of social philosophy, we need to distinguish several levels of intersubjectivity and, (...) in particular, focus on the somewhat neglected level of primary intersubjectivity. The article will discuss the account of primary intersubjectivity in Honneth’s work. We show that Honneth’s account runs into difficulties, and drawing on recent findings in developmental psychology, we suggest a rethinking of elementary recognition in terms of ‘affective proximity’. This both renders the account less susceptible to criticism and provides a normative perspective that can effortlessly enter into interdisciplinary collaboration. (shrink)

This study investigates how allomaternal care impacts human development outside of energetics by evaluating relations between important qualitative and quantitative aspects of AMC and developmental outcomes in a Western population. This study seeks to determine whether there are measurable differences in cognitive and language outcomes as predicted by differences in exposure to AMC via formal and informal networks. Data were collected from 102 mothers and their typically developing infants aged 13–18 months. AMC predictor data were collected using questionnaires, structured daily (...) diaries, and longitudinal interviews. Developmental outcomes were assessed using the Cognitive, Receptive Language, and Expressive Language subtests of the Bayley III Screening Test. Additional demographic covariates were also evaluated. Akaike Information Criterion -informed model selection was used to identify the best-fitting model for each outcome across three working linear regression models. Although AMC variables had no significant effects on Receptive and Expressive Language subtest scores, highly involved familial AMC had a significant medium effect on Cognitive subtest score. Formal childcare had no effect on any outcome. This study provides preliminary evidence that there is a measurable connection between AMC and cognitive development in some populations and provides a methodological base from which to assess these connections cross-culturally through future studies. As these effects are attributable to AMC interactions with networks of mostly related individuals, these findings present an area for further investigation regarding the kin selection hypothesis for AMC. (shrink)

This dissertation contributes to the philosophy of empathy and biomedical ethics by drawing on phenomenological approaches to empathy, intersubjectivity, and affectivity in order to contest the primacy of the intersubjective aspect of empathy at the cost of its affective aspect. Both aspects need to be explained in order for empathy to be accurately understood in philosophical works, as well as practically useful for patient care in biomedical ethics. In the first chapter, I examine the current state of clinical empathy in (...) medicine including professional opinions about empathy, the dominant definition being employed, and the problems that arise from this definition. By trying to define empathy in a way that is useful to the current presuppositions in medicine, clinical empathy aligns with simulation theory, which has three problems: the discrepancy between the way empathy is defined and the way it is explained, the lack of diversity that this theory of empathy allows in our understanding of others, and the lack of affective understanding and affective engagement involved in the patient-physician interaction. These three problems are used to derive three questions that are important for any theory of empathy: (1) What is the phenomenon being explained? (2) What is the intersubjective context of empathy? (3) What is the affective dimension of empathy? The best theory of clinical empathy can be formulated by answering these three questions as they relate to phenomenological theories, which are more attuned to overcoming presuppositions. Chapters two and three each examine a different phenomenological approach to empathy from opposite extremes in their theories of intersubjectivity. Husserl and Stein begin from an isolated, transcendental subject that needs empathy to bridge the gap between itself and others, while Scheler begins from a primary intersubjectivity in which self and other are undifferentiated, making empathy a largely unnecessary skill. Despite their strongly opposed positions, and the acknowledgement that their theories of intersubjectivity necessitate their theories of empathy, I argue that both fail to understand the affective dimension of empathy. Husserl and Stein leave no room in empathy for it to be an affect, while Scheler prioritizes affects that reunite subjects, but leaves empathy itself as a non-affective skill. Chapter four explains Gallagher’s interaction theory as a more moderate approach to the relation between empathy and intersubjectivity. He draws on the insights of the other two theories, but conceives of empathy as a multi-leveled phenomenon that allows for an understanding of others. While this theory does aid in addressing the intersubjective context of empathy in a way that best solves the first two problems with clinical empathy, interaction theory still fails to fully address the affectivity of empathy, maintaining empathy as a largely cognitive ability. Gallagher does acknowledge the affective core of empathy, but he does not explain the way in which it is affective. In response to this problem, I explain Anya Daly’s application of Merleau-Ponty’s theory of reversibility to affectivity as a possible solution to the problematic gap in Gallagher’s theory. Chapter five focuses on theories of clinical empathy in order to address the neglected affective aspects of empathy, and respond to the problem of detached concern. The problems caused by detached concern are explained, as well as why the theories discussed in the middle chapters are still unable to solve them. This is done in two parts. In the first part, I explain the basis of this issue in the cognitive/feeling divide, as explained in the philosophy of emotion. Then, I give a brief overview of the phenomenology of affectivity to be used as a guide to the affectivity of empathy. In the second part, I examine three theories of clinical empathy that attempt to solve the problem of detached concern, noting their strengths and weaknesses based on their similarities to phenomenological approaches to empathy and affectivity. (shrink)

Noting that the ethological notion of «making special» (now also called «artification») has gained attention in several fields, including aesthetic philosophy, a brief history is presented of its origin and development over forty years. Its origin is traced to «proto-aesthetic» elements of interactions that evolved in Middle Pleistocene mothers and infants: simplification or formalization, repetition, exaggeration, elaboration, and manipulation of expectation. These operations upon visual, vocal, and gestural modalities were subsequently used by individuals and cultures in creating and responding to (...) their various arts. Artification is a broader human proclivity than «art». Unlike other notions of art it does not imply beauty or skill although in its motivation to mark importance, the ordinary is made extraordinary. In its emphasis on preverbal, presymbolic, pancultural, participative, affective, and affinitive aspects of aesthetic cognition and behavior, the artification hypothesis provides further directions to cognitivist and neuroscientific studies in contemporary philosophical aesthetics. (shrink)

I challenge Mehr et al.'s contention that ancestral mothers were reluctant to provide all the attention demanded by their infants. The societies in which music emerged likely involved foraging mothers who engaged in extensive infant carrying, feeding, and soothing. Accordingly, their singing was multimodal, its rhythms aligned with maternal movements, with arousal regulatory consequences for singers and listeners.

Human language and human music are both unique communication systems that evolved in the human lineage. Here, I propose that they share the same root, they evolved from an ancestral communication system yet to be described in detail. I suggest that pre-hunt charade was this shared root, which helped organize and coordinate the hunt of early hominins.

Teaching is hypothesized to be a species-typical behavior in humans that contributed to the emergence of cumulative culture. Several within-culture studies indicate that foragers depend heavily on social learning to acquire practical skills and knowledge, but it is unknown whether teaching is universal across forager populations. Teaching can be defined ethologically as the modification of behavior by an expert in the presence of a novice, such that the expert incurs a cost and the novice acquires skills/knowledge more efficiently or that (...) it would not acquire otherwise. One behavioral modification hypothesized to be an adaptation for teaching is ostensive communication—exaggerations of prosody and gesture that signal intent to transmit generalizable knowledge and indicate the intended receiver. On this view, the use of ostensive communication in conjunction with the transmission of generalizable knowledge constitutes evidence of teaching. Oral storytelling appears to meet these criteria: Indigenous peoples regard their traditions as important sources of ecological and social knowledge, and oral storytelling is widely reported to employ paralinguistic communication. To test this hypothesis, descriptions of performed narrative in forager societies were coded for the use of 14 ostensive-communicative behaviors and the presence of generalizable knowledge. Although biased toward North America, the study sample comprised 53 forager cultures spanning five continents, 34 language families, and diverse biomes. All cultures evinced the predicted behaviors. Results suggest that foragers use storytelling as a mode of instruction, thus providing cross-cultural evidence of teaching in forager populations. (shrink)

Ackermann et al. treat both genetic and paleoanthropological data too superficially to support their conclusions. The case ofFOXP2and Neanderthals is a prime example, which I will comment on in some detail; the issues are much more complex than they appear in Ackermann et al.

Social and ecological research and theory are used to elaborate and enrich two important sets of accounts of language origins. One is the interdependence and shared intentionality hypothesis (e.g.,Tomasello, 2014a) of the ways in which humans became cooperative and conforming in ways that other apes did not, eventually leading to language. A second set of accounts addresses the emergence of bipedalism and its connections to language and to many other anatomical, cognitive, and social features that are distinctive in humans. Particular (...) attention is given to the carrying and caretaking of infants. Research and theory challenging common assumptions about the role of conformity in cooperation and conversation are reviewed and integrated into these accounts. Together these varying perspectives point toward a more dialogical, dynamic, and distributed understanding of social interactions and the values that motivate and constrain humans’ social and linguistic skills. (shrink)

Social and ecological research and theory are used to elaborate and enrich two important sets of accounts of language origins. One is the interdependence and shared intentionality hypothesis of the ways in which humans became cooperative and conforming in ways that other apes did not, eventually leading to language. A second set of accounts addresses the emergence of bipedalism and its connections to language and to many other anatomical, cognitive, and social features that are distinctive in humans. Particular attention is (...) given to the carrying and caretaking of infants. Research and theory challenging common assumptions about the role of conformity in cooperation and conversation are reviewed and integrated into these accounts. Together these varying perspectives point toward a more dialogical, dynamic, and distributed understanding of social interactions and the values that motivate and constrain humans’ social and linguistic skills. (shrink)