DGfS Summer School – Language Development: Evolution, Change, Acquisition

Thought y’all might be interested in the below. Quite a lot of language evolution stuff going on and some big names.

DGfS Summer School – Language Development: Evolution, Change, Acquisition 

Date: 12-Aug-2013 – 30-Aug-2013
Location: Humboldt-University Berlin, Germany
Meeting URL: http://www2.hu-berlin.de/dgfs_sommerschule/ 

Meeting Description:

We invite advanced students (M.A. or Ph.D. level) in Linguistics and related fields to attend this 3-week event in August 2013. It is co-organized by the Deutsche Gesellschaft für Sprachwissenschaft (DGfS), the Max Planck Institute for Psycholinguistics, and the Excellence Cluster 264 – TOPOI. The Summer School offers courses in different areas of linguistics, genetics, anthropology and archeology, which look at language from the point of view of language evolution, language change, and language acquisition. The courses will be taught by distinguished researchers from Germany, Europe and the USA. The summer school is of course also open to more advanced scientists who are interested in learning about language development. Language of instruction is English and German. For further information see the summer school’s website:

http://www2.hu-berlin.de/dgfs_sommerschule/

Courses (language evolution in bold):

The origins and evolution of language (Maggie Tallerman) 
Empirical approaches to the cultural evolution of language (Hannah Cornish) 
Genes and language: from molecules to linguistic diversity (Dan Dediu & Sonja Vernes) 
Emergence and development of writing systems (F. Kammerzell) 
Empirical approaches to the diversity and disparity of languages (Michael Dunn) 
Mathematical and Computational Models of Language Evolution (Gerhard Jäger) 
Linguistics und Human Prehistory (Paul Heggarty) 
Sign Languages: Evolution and Change (Markus Steinbach) 
Diachronic change in four millenia: the language history of Egyptian-Coptic (Daniel Werning)
Approaches to Historical Morphology and Syntax (Alice C. Harris)
Efficiency and extravagance in morphosyntactic change (Martin Haspelmath)
Semantic Change (Dirk Geeraerts)
Indo-European linguistics revisited (Silvia Luraghi)
In search of stability in language contact. (Pieter Muysken)
Diachronic Phonology (Ricardo Bermúdez-Otero & Silke Hamann)
The social foundation of language change (Daniel Schreier)
Sprachtheoretische und didaktische Aspekte des Schriftspracherwerbs (Christa Röber)
The acquisition of sign language: influences from modality and experience (Gary Morgan)
Theoretical and Empirical approaches to first language acquisition (Heike Behrens)
Language attrition and bilingual development (Monika Schmid)
Multimodal multilingualism: Gestures, second language acquisition, bilingualism (Marianne Gullberg)
Bilingualism and second language learning: Cognitive and neuropsychological perspectives (Janet van Hell)

What happens when you get a Zebra Finch drunk?

It has now been some time since Sean posed the research question as to whether a population’s consumption of alcohol can affect the structure of that population’s language. This hypothesis is born from the finding that alcohol consumption affects procedural but not declarative memory (Smith & Smith, 2003).

This question was brought to the front of my mind again today after an article appeared in New Scientist about the findings of a study which looked at what happens when you get Zebra Finches drunk.

Zebra finches are interesting to those studying language evolution because they are known to use vocal learning to acquire their repertoire of songs. We also know that these songs can be passed on through cultural transmission and accumulate structure based on the cognitive biases of the finches, just as language does in humans.

It is not a hard leap to draw parallels between early human speech acquisition and the song development of birds (Doupe & Kuhl, 1999).  Both humans and birds are known to babble and in both innate biases and constraints interact with environmental influences to produce the final vocal output (Feher et al. 2008).

The findings published in new scientist (though, as yet, nowhere else),  state that binge drinking may permanently impair juvenile finches’ ability to learn new songs and that, while normal young Zebra Finches “babble” and experiment before settling on their own song, which is inspired by the songs of the finches around them, the drinking finches experimented less, and settled on a simple song at early on.

Christophen Olson, who presented the findings, said that the results may tell us something about how learning behaviour in the adolescent human brain is affected by binge drinking.  It is an interesting thought experiment to consider how human language may culturally evolve in a population of individuals binge drinking from an early age. I don’t think we’re going to get this one past the ethics board though.

 

Thanks to Rosalind King for pointing out this article to me.

Refs

Doupe, A.J. and Kuhl, P.K. (1999). Birdsong and Human Speech: Common Themes and Mechanisms. Annu. Rev. Neurosci., 13, 567-631.

Feher, O., Mitra, P.P., Sasahara, K., Tchernichovski, O., 2008. Evolution of song culture in the zebra finch. In A.D. Smith, K. Smith, R. Ferrer i Cancho, eds., The Evolution of Language. World Scientific Publishing: Singapore, pp. 423–424.

Smith C, & Smith D (2003). Ingestion of ethanol just prior to sleep onset impairs memory for procedural but not declarative tasks. Sleep, 26 (2), 185-91 PMID: 12683478

International Conference on Evolutionary Patterns

I’ve reposted this from http://www.evolutionarylinguistics.org/ as I thought it would be of interest to readers:

Call deadline: 1 February 2013
Event Dates: 17-19 May 2013
Event Location: Lisbon, Portugal
Event URL: http://evolutionarypatterns.fc.ul.pt/sub/cfa/cfa.html

Call for bioinformaticians, evolutionary biologists, microbiologists, paleontologists, geologists, physicists, mathematicians, anthropologists, archeologists, linguists, sociologists, economists, and philosophers and historians of science to provide talks on the following topics:

  1. Conceptualization, quantification and modeling of horizontal and vertical transmission in biological and sociocultural sciences
    • Bioinformatic approaches in biology, paleontology, anthropology, archeology, linguistics, sociology, and economics. These approaches can include: phylogenetics, phylogenomics, complex network based models, mathematical and statistical (computer) simulations, imaging techniques, (multi-)agent models, Complex Adaptive Systems approaches, …
    • Tree versus network diagrams
    • Mechanisms of horizontal and/or vertical transmission
    • Parallels and differences between biological and sociocultural trait transmission and inter-individual interactions
  2. Conceptualization, quantification and modeling of micro- and macroevolution in biological and sociocultural sciences
    • Mechanisms of biological and/or sociocultural micro- and macroevolution
    •  Modes of biological and/or sociocultural micro- and macroevolution
    • Tempos of biological and/or sociocultural micro- and macroevolution
    •  (Meta-)Patterns of evolution
    • Parallels and differences between biological and sociocultural micro- and macroevolution
  3. Hierarchy theory and the units, levels and mechanisms of evolution
    • Units of biological and/or sociocultural evolution
    • Levels of biological and/or sociocultural evolution, multilevel selection theories
    • Mechanisms of biological and sociocultural evolution
    • (Nested) Hierarchy theory
    • Emergence
    • Upward and downward causation
  4. How the universal application of evolutionary theories enables new possibilities for inter- and transdisciplinary research and the unification of the sciences
    • The need for an Extended Synthesis
    • Universal Darwinism, Universal Selectionism
    • The universality of symbiogenesis, reticulate evolution, hybridization, drift, patterns of punctuated equilibria, the ratchet effect, the Baldwin effect, …
    • (Applied) Evolutionary Epistemology
    • Unification of the sciences through shared research frameworks, methodologies, modeling techniques
    • Philosophical analyses and historical accounts on attempts to unify the biological and the sociocultural sciences based upon evolutionary theory

We encourage submissions of (1) concrete models and simulations, (2) theoretical, reflexive talks, and (3) historical accounts on any of the above mentioned topics.

Please see the conference website for submission details.

The Evolution of Speech: Learned Vocalisations in Mice

Mice can learn vocalisations! A new article realised today on PLOS ONE by Gustavo Arriaga, Eric Zhou and Erich Jarvis, shows that mice share some of the same mechanisms used to learn vocal patterning in songbirds and humans.

Mice can learn vocalisations! A new article realised today on PLOS ONE by Gustavo Arriaga, Eric Zhou and Erich Jarvis, shows that mice share some of the same mechanisms used to learn vocal patterning in songbirds and humans.

Very few animals have the capacity for vocal learning. This ability allows species to modify the sequence and pitch of sounds that create songs or speech. Currently, only three groups of birds – parrots, hummingbirds and songbirds – and some mammalian species – humans, whales, dolphins, sea lions, bats and elephants – have demonstrated vocal learning. This ability is still yet to be found even in non-human primates.

This study looks at the ultrasonic vocalizations known as mouse ‘song’ and provides evidence that mice can change at least one acoustic feature of these vocalizations based on their social exposure.

Two mice were put together and over time learned to match the pitch of their songs to one another. The paper suggests this is a limited form of vocal learning.

The paper also shows evidence that the mice can control their vocal motor neurons. In the press release, Erich Jarvis states, “This is an exciting find, as the presence of direct forebrain control over the vocal neurons may be one of the most critical aspects in the human evolution of speech.”

While this vocal learning in mice seems to be much more primitive than in songbirds or humans, it may reveal some of the intermediate steps in the process by which vocalization evolved in advanced vocal learners like songbirds and humans.

Exciting stuff!

 

References

Arriaga G, Zhou EP, Jarvis ED (2012) Of Mice, Birds, and Men: The Mouse Ultrasonic Song System Has Some Features Similar to Humans and Song-Learning Birds. PLoS ONE 7(10): e46610. doi:10.1371/journal.pone.0046610

The continuing rise of physics envy

A few weeks back, James posted a paper about the “Linguistic Big Bang”. Now here’s a paper about protolanguage and the linguistic “God Particle”. I’m happy to see that physics envy in the linguistic community is far from dead!

A few weeks back, James posted a paper about the “Linguistic Big Bang”. Now here’s a paper about protolanguage and the linguistic “God Particle”. I’m happy to see that physics envy in the linguistic community is far from dead!

Abstract

Most scholars investigating the evolution of language subscribe to the hypothesis that protolanguage occurred as an intermediate stage between the speechless state of our remote ancestors and modern language. But some scholars – Noam Chomsky and fellow biolinguists, Bernd Heine and Tania Kuteva, and others – have expressed serious doubts about the existence of protolanguage. The present article investigates the cause of this disagreement and what it reveals about the nature of influential modern work on language evolution. It does this by analysing the case made by Derek Bickerton for the existence of protolanguage, as well as Noam Chomsky’s case against the existence of protolanguage. Both cases are shown to be weak, resting on a range of implicit and/or contentious assumptions. Invoking a conceptual distinction illustrated by physicists’ hunt for the “God particle”, the article argues that the case for the existence of protolanguage has not been strengthened by recent work attributing specific properties to protolanguage. To conclude, the article discusses the conceptual means needed for shoring up the assumption that evidence for the existence of protolanguage can be derived from so-called living linguistic fossils.

Botha, R. (2012) Protolanguage and the “God particle”, Lingua, Volume 122, Issue 12, Pages 1308-1324, ISSN 0024-3841, 10.1016/j.lingua.2012.07.005.

Limiting female participation: will it increase female participation?

Following some great work over at FeministPhilosophers to raise awareness of the prevalence of all-male conference events in Philosophy, an interdisciplinary action for gender equity at scholarly conferences has been doing the rounds over the last four days. It was proposed by Dan Sperber and Virginia Valian, who have also compiled an accompanying Q & A that is very informative indeed, especially for those who may not have thought about such issues before. The sentiment of this action is certainly commendable and it’s heartening to see this conversation being opened in the research community. In the spirit of continuing this conversation, I have made critical comments elsewhere that I’m more or less cross-posting here.

The commitment is summarised thus:

Commitment to gender equity at scholarly conferences
Across the disciplines, disproportionately more men than women participate in scholarly conferences – as keynote or plenary speakers, as symposiasts, or as panelists. This, we believe, is the outcome of widespread and generally unintended bias. It is unfair, it hinders advancement in scholarship, and it is especially discouraging to junior scholars. Overcoming such bias involves not just awareness but positive action.

We therefore undertake to make our participation in conferences – whether as an organizer, sponsor, or invited speaker – conditional on the invitation of women and men speakers in a fair and balanced manner.

So, we can understand this action as a distributed boycott of conferences that individuals believe have been unfair in their approach to inviting female speakers. There is a guideline in the accompanying Q & A on how signees can establish whether a conference has been organised fairly, which outlines various considerations you can make as an attendee and also as an organiser. The problem is that there is little to compel anyone signing this to actually make good on conditional conference participation, particularly since the bias is (as noted in the Q & A) unintended and unconscious even among those who personally endeavour to act against it. The consequences of public accountability are at best unclear, unless those signing up are also committing themselves to monitor the conduct of their fellow signatories. The fact that people generally have these sentiments before they’ve signed the commitment, and that simply holding this sentiment doesn’t seem to have made any difference to how conferences are organised, ought to make us pause.

This may seem a little unfair of me, but at least part of my cynicism is based on the fact that female representation in political parties and government positions is notoriously difficult to improve with non-binding good intentions alone. At Edinburgh University’s inaugural Chrystal Macmillan lecture last year Prof Pippa Norris showed that even voluntarily enacting quotas for a minimum number of female representatives was not enough to improve equity in political parties and make sure that they actually do anything. The only measure that proves effective is an additional penalty of non-registration for those parties that do not meet requirements. This is the case worldwide.

Proportions of m/f signatories as of 17:00 on 04/10/12
χ² = 28.071, d.f. = 1, p = < 0.0001

Related to the problems inherent in grassroots strategies of action, I also find myself wondering how it could benefit female scholars (individually but also at large), to make such a commitment. Surely the point here is that their representation is already under par. This is an especially important concern when we ask ourselves who is more likely to actually participate in such an action; despite the fact that this commitment is intended for everyone, I suspected that the one area where women might be overrepresented is on the signature list. As of today, this is certainly true (see pie chart, right; updated chart here).

It is worth pausing to consider exactly why this is problematic. It is not only that there exist fewer opportunities for high-profile female academics to speak than there should be – though that is an important issue. A more pervasive reason why fewer female speakers is a problem is that the resultant academic environment is hostile to other female academics – particularly junior attendees who, realistically, do not have as much luxury in limiting their participation. For female academics to consign themselves to only “fair” conferences seems to then work somewhat against the intended positive action, since even fewer women end up being represented than there currently are. Female junior attendance, I would bet, will largely remain the same since they cannot professionally afford to restrict themselves. The result is that they are attending conferences with even less female representation than there would have otherwise been, and encountering a more hostile and male-dominated environment.

Quick-and-dirty work on a teensy dataset to point out decline in the proportion of male signatures

A further point of concern is that, as is fairly typical of feminist campaigns, there seems to be bit of a trend for the loss of interest from male academics over a relatively short space of time (see table, left). Is it reasonable, then, to expect that a majority-female abstention will ignite structural change to remedy this situation? I am inclined to believe that it isn’t. The idea that women should opt out of speaking at conferences in order to pressure them into organisational change is questionable precisely because their contribution is already valued less than that of their male counterparts. Given this bias, withheld participation by women may have much less impact on conferences than desired, particularly at those events which are often currently all-male anyway. If we still want to claim that a boycott is a desirable means of effecting change in this instance (and I’m not entirely convinced that it is), I’d venture that it would be significantly more effective if it comprised a male majority. An additional improvement would be to compile a list of conferences with a poor track record for a focused boycott that people could commit to, rather than relying on their subjective assessment. This would be an improvement not least because leaving the onus on the individual to decide how to behave under the obligation of this commitment (combined with the lack of a concrete goal/measure of success) makes the chances of material change rather slim indeed.

Given what we already know about women’s political representation, I believe a more effective goal is to implement change at an explicitly organisational level. As an example off the top of my head, petitioning for a requirement that established conferences declare their level of complicity with a set of fairness provisions might be more promising. This allows others to judge fairness more transparently (and less subjectively) while simultaneously giving high visibility to this issue as a matter of course. This kind of approach strikes me as somewhat more hopeful in making fair representation a standard consideration of conference organisers, both now and in the future. One barrier to this is that there isn’t, to my knowledge, a central body for the registration of academic conferences or an ombudsman-type overseer that could enforce such a requirement. Given that the academy has proven itself unable to make equity provisions, perhaps one should be instated. At any rate, this is still by no means enough; if we can learn anything from the political sphere it’s that there has to be a material downside to non-compliance beyond disapproval (or lack of votes) from the constituency.

That this conversation has been opened and circulated around the interdisciplinary research community is a very positive step in the right direction. Further thinking on how we can make material changes to structural inequity is both crucial and timely; any and all discussion on this is a Good Thing. I know I’m not alone in hoping that signing this commitment is not the beginning and end of the research community’s action toward gender equity.

 

Niche as a determinant of word fate in online groups (featuring @hanachronism and @richlitt)

ResearchBlogging.org

Last year Altmann, Pierrehumbert & Motter (henceforth, APM) released a great paper in PLoS One: Niche as a determinant of word fate in online groups. Having referenced the paper extensively in my non-bloggy academic world, I thought it was about time I mentioned it on a Replicated Typo. Below is the abstract:

Patterns of word use both reflect and influence a myriad of human activities and interactions. Like other entities that are reproduced and evolve, words rise or decline depending upon a complex interplay between their intrinsic properties and the environments in which they function. Using Internet discussion communities as model systems, we define the concept of a word niche as the relationship between the word and the characteristic features of the environments in which it is used. We develop a method to quantify two important aspects of the word niche: the range of individuals using the word and the range of topics it is used to discuss. Controlling for word frequency, we show that these aspects of the word niche are strong determinants of changes in word frequency. Previous studies have already indicated that word frequency itself is a correlate of word success at historical time scales. Our analysis of changes in word frequencies over time reveals that the relative sizes of word niches are far more important than word frequencies in the dynamics of the entire vocabulary at shorter time scales, as the language adapts to new concepts and social groupings. We also distinguish endogenous versus exogenous factors as additional contributors to the fates of words, and demonstrate the force of this distinction in the rise of novel words. Our results indicate that short-term nonstationarity in word statistics is strongly driven by individual proclivities, including inclinations to provide novel information and to project a distinctive social identity.

Continue reading “Niche as a determinant of word fate in online groups (featuring @hanachronism and @richlitt)”

Language Evolution in 50 Words

Every week the British Interactive Group (BIG) (a skill sharing network for science communicators) have a competition among their members on the mailing list to explain a phenomenon in 50 words. This is known as the “Friday Phenomenon” and the person who does the best job at being both informative and engaging with such a small word count inherits the job of deciding what the next “phenomenon” will be. A couple of weeks ago I had the honour of being that person and the question I asked people to answer in 50 words (rather predictably) was:  “How did structure evolve in human language?”

I thought you’d enjoy reading the entries and remember, these people are professional science communicators, not linguists!

Alexander Brown (You can read Alex’s blog here: http://alexanderbrown.info/tag/being-bilingual/)

How did structure evolve in human language?

Because there are no records, it is hard to say how human language formed.

It was doubtless linked to the evolution of the brain.

Structure gives context to words, increasing the amount of information they carry. This was an improvement on less meaningful assemblies.

Mark Lewney:

Language must encode 4D reality.

“[Elk herd], [sunrise direction], [half day away]” is fine for the present.

To change the future, nouns must verb.

“[Ug and Og] CHASE [biggest antlers] then [Thag and Derek] REPLACE [Ug and Og] then [everyone] CHUCKS [spears] at [biggest antlers]”

Blank slates can’t tell stories.

Dave Anseel:

Communicating the difference between run towards and run away is a evolutionary advantage…. especially if the object is a lion. Those who don’t understand fairly rapidly leave the gene pool.

Plus as group sizes increase communicating “what his Autie Uga did to our cousin Ogg” leads to grammar, or frustration.

Sam Steventon:

Lexical/sexual selection (sexical selection?) Structure in language has evolved to increase the success of obtaining mates. Conspicuous lexical traits – such as pronounced punctuation, increased vocabulary, or striking sentences increase the attractiveness of humans. This can be seen in the apparent mating success of musicians, comedians and moody writers.

Lewis Pike:

Language ideally supports precise, quick and clear communication. Playful and comprehensible too. Playful language uses ambiguity not precision. Meeting strangers and learning to understand them is important. Seduction is often slow and important. White lies aren’t clear but socially important. Dynamic tensions between needs these needs keeps languages evolving.

I decided that Sam won because of the invention of the process of “sexical selection”.

Information on how to join the BIG mailing list can be found  here: http://www.big.uk.com/Default.aspx?pageId=749565

“Hierarchical structure is rarely…needed to explain how language is used in practice”

How hierarchical is language use?

Stefan L. Frank, Rens Bod and Morten H. Christiansen

Abstract: It is generally assumed that hierarchical phrase structure plays a central role in human language. However, considerations of simplicity and evolutionary continuity suggest that hierarchical structure should not be invoked too hastily. Indeed, recent neurophysiological, behavioural and computational studies show that sequential sentence structure has considerable explanatory power and that hierarchical processing is often not involved. In this paper, we review evidence from the recent literature supporting the hypothesis that sequential structure may be fundamental to the comprehension, production and acquisition of human language. Moreover, we provide a preliminary sketch outlining a non-hierarchical model of language use and discuss its implications and testable predictions. If linguistic phenomena can be explained by sequential rather than hierarchical structure, this will have considerable impact in a wide range of fields, such as linguistics, ethology, cognitive neuroscience, psychology and computer science.

Published online before print September 12, 2012, doi: 10.1098/rspb.2012.1741
Proceedings of the Royal Society B

Full text online HERE.

Jim Hurford: What is wrong, and what is right, about current theories of language, in the light of evolution? (2)

This post continues my summary of Jim Hurford’s discussion of two contrasting extreme positions on language evolution in his plenary talk at the Poznan Linguistic Meeting. Here’s the summary of these two positions from my last post:

Position A:

(1) There was a single biological mutation which (2) created a new unique cognitive domain, which then (3) immediately enabled the “unlimited command of complex structures via the computational operation of merge. (4) This domain is used primarily for advanced private thought and only derivatively for public communication. (5) It was not promoted by natural selection.

Position B:

(1) There were many cumulative mutations which (2) allowed the expanding interactions of pre-existing cognitive domains creating a new domain, which however is not characterized by principles unique to language. This then (3) gradually enabled the command of successively more complex structures. Also, on this view, this capacity was used primarily for public communication, and only derivatively for advanced private thought and was (5) promoted by natural selection.

Hurford criticized the position that the biological changes enabling languages primarily evolved for private thought, because this would imply that the first species in the Homo lineage that developed the capacity for unlimited combinatorial private thought (i.e. “merge”) were non-social and isolated clever hominids. This, as Hurford rightly points out, is quite unrealistic given everything we know about human evolution regarding, for example, competition, group size, neocortex side and tactical deception. There is in fact very strong evidence that what characterizes humans the most is the exact opposite as would be predicted by the “Merge developed in the service of enhancing private thought” position: We have the largest group size of any primate, the largest neocortex (which has been linked to the affordances of navigating a complex social world) and have the most pronounced capacity for tactical deception.

Continue reading “Jim Hurford: What is wrong, and what is right, about current theories of language, in the light of evolution? (2)”