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Showing posts with label Analysis. Show all posts
Showing posts with label Analysis. Show all posts

Wednesday, 30 December 2015

Essays on Early Language: 1, Language - Is it what makes us human?

The next few blogposts: 'Essays in Early Language' explore some foundational questions   that help us to understand the nature of communication difficulties in modern society.  These questions may often be overlooked, or taken as a given without much analysis, but they are key to understanding the importance of language in human communication, what can go wrong and the implications for individuals if things do go wrong. 

Whilst I have been meaning to post the essays for some time, I was inspired to share the first of these in response to a discussion on Twitter about the claim that "Language is what makes us human".  This is a claim that has been made about language in the past, perhaps most audaciously by Pinker (1994).  It is a debatable claim, for example, I have also heard friends describe the use of fire as being our most fundamentally human characteristic, and one could cite the complex communication systems of other species in defence of the argument that we are not so unique after all, although this factor is robustly defended by Tomasello (2008). Even considering these arguments, there is no denying that language is pretty special, and worthy of being a major player amongst fundamental human characteristics.  In my PhD research I examined Language Learning Impairment and its impact on individuals.  The starting point was to address the question of exactly how important the ability to communicate using language is for individuals. Is it merely a desirable practical skill, or is it at the very core of what it means to be human?

This first essay; 'Language - is it what makes us human?' tackles this question by considering how necessary language is for humans for healthy living and functioning in society. Rather than debating the question of whether language is the one characteristic that stands out from others (such as use of fire) as defining the human organism, however, the argument is made that, although individuals who's language skills are impaired are certainly not any less human, that language is a fundamental human ability that significantly affects our ability to fully participate in many aspects of social life and be humans together.

The argument for the fundamental need for language in modern society in this essay is made considering three factors.  First, through a consideration of the origins of language and its use amongst humans universally.  Second, a case is made for the increased demand for language skills in modern society, highlighting further the fundamental need for language competence.  Third and final, the recognition of language as a basic human need in law and international policy is examined. Communication needs are considered within the context of the United Nations Declaration of Human Rights, and examples of national interpretations are illustrated through UK based policy and law. 


Origins and universality of language

Evolution of language in humans
As primates, human beings are biologically adapted for social life (Joffe, 1997; Tomasello, 2007).  In his summary of social adaptation, Winston (2002) reported that the ability to function within groups has enabled humans to increase their capacity for passing on learned skills and knowledge, and for engaging in group activities including finding food and tool use, and that the primary skill that enables these functions is the ability to communicate.  As part of this biological adaptation for social and cultural life, humans have a highly developed communication system, the most complex feature of which, by far, is language.  

The question of how humans evolved to use language and whether language structure itself is a biologically evolved adaptation, or a learned cultural process emerging from other social adaptations continues to be debated (Bickerton, 1992; Fitch, Hauser, & Chomsky, 2005; Pinker, 1994; Pinker, 2002; Sampson, 1997; Tomasello, 2008) and will not be covered in detail in this essay. For the purposes of understanding to what degree language is important to our species it is only necessary to state that it is widely agreed that human language is in some degree related to and dependent on our biological and evolutionary makeup (Sampson, 1997). Human language enables us to request and offer help, inform and share intentions and experiences (Tomasello, 2008).  Not only is the ability to communicate using language beneficial to humans for all these reasons, it is in fact expected between conspecifics, and humans who do not understand or cooperate according to the underlying purposes of human communication (including cooperation, altruism) may find themselves ostracised from society if they are not supported (Tomasello, 2008).

Universality of language
Human language use is universal (Pinker, 1994).  Whilst across the world we all speak different languages, all normally developing humans acquire some form of spoken or signed language. Even individuals raised without a linguistic model (for example deaf children born to non-signing parents, or slaves removed from their own linguistic environment and therefore only using pidgin versions of a language) have been reported to generate full linguistic competence within a single generation (Bickerton, 1992; Pinker, 1994).  Whilst there are limitations in these early anthropological studies (Pinker, 1994; Sampson, 1997), it appears that for all cultures worldwide language use is a robust human skill and full linguistic competence develops quickly between individuals, even in adverse circumstances.  Language use appears therefore to be a fundamental feature of what it means to be human.

Increased demands for language use in the modern world

Reduction of manual labour
It has been proposed that in the twenty-first century the ability to communicate has become an even more vital skill for participation in the developed world.  Several authors have highlighted that as society has moved towards advances in technology, the demand for traditional manual labour has decreased, (Hart & Risley, 1995; Law, Reilley, & Snow, 2013; Ruben, 2000).  As Law et al. (2013) stated; “the more sophisticated, the better educated and the more automated or digitalised the society becomes, the greater the shift from the blue collar manual employment towards white collar ‘communication’ focused jobs” (p. 488).  Ruben (2000) carried out a survey of employment in the USA which found that labour that would be considered to be manual had reduced from 80% of the workforce in 1900 to 37% of the workforce in 2000.  He also postulated that even the work that is considered to be blue collar manual labour in 2000 would require employees to have certain cognitive skills, for example in process management or logistics.  These skills rely to a degree on language abilities.

The need for language in a digitalised society
It is also noteworthy that the increasing dependence on the Internet for participation in society places demands on an individual’s communication skills.  Livingstone (2002) highlights three different kinds of interactions that take place on the internet; user to user interactions, that is, computer aided interactions such as email, text and chat environments, user to document, such as access to information through hyperlinks and user to system, such as takes place in gaming environments.  The internet is now used for so many aspects of life; participation in social life for forming friendships and relationships (e.g. McKenna, Green, & Gleason, 2002), access to information for the purposes of health (e.g. Norman & Skinner, 2006), education (e.g. Wright, 2010), employment (e.g. Kuhn & Skuterud, 2000) and for leisure (e.g Sanchez-Navarro & Aranda, 2012).  The ability to interact in these three ways using the internet is now considered to be a basic skill (Skills for Life Network, 2015).  There is even some evidence of an attempt to measure social status in part according to level of social networking on the internet (Savage et al., 2013).  It is proposed in this essay that the ability to take full advantage of all aspects of a digitalised society is largely dependent on an individual’s communication and language skills, and that those with speech, language and communication needs are further disadvantaged.

Global recognition of communication as a human right

Given the importance of these highly developed communication skills through language in the evolution of humans and the universality of language use, it is not surprising, therefore, that the ability to communicate effectively (and arguably, thus, to use language) is considered globally to be vital to an individual’s health and wellbeing and is recognised internationally to be a basic human need. 

Declaration of communication rights and human rights
In 2014 the International Communication Project published a universal declaration of communication rights (International Communication Project, 2014).  This declaration was developed by its member organisations across the globe, that is, the speech and language therapy professional bodies of the UK, Canada, Ireland, USA, Australia and New Zealand.  This declaration is not representative of the world as a whole as it represents only the interested profession of English speaking developed world.  It also does not have the legal gravitas of the Universal declaration of Human Rights (United Nations, 1948) which was agreed by fifty member states and now forms the basis of human rights law.  The communication rights declaration does, however, highlight that the ability to communicate affects significant aspects of life that are referenced in the United Nations Declaration of Human Rights (1948).  For example, the declaration of communication rights states that barriers to communication affect an individual’s ability to relate to and interact with others (thus affecting their right to realise social and cultural rights and develop their personality, as outlined in Article 22), to learn (affecting their right to an education as stated in Article 26) and to access the justice system (affecting their right to equal protection before the law as stated in Article 7).   Furthermore, the World Health Organisation (WHO) recognises the importance of communication as vital for health literacy.  The WHO defines ‘communication and interpersonal skills’ as one of five areas of life skills globally relevant and necessary for health promotion and the protection of human rights across the world (World Health Organisation, 1999).

The rights of children
The importance of communication is also recognised internationally concerning the rights of children.  The United Nations Convention on the rights of the Child (1989), signed by all member States (excluding the USA and Somalia) acknowledges the rights of children to be able to express their views (Article 12, p.5).    Furthermore, Article 13 (p.5) states that “the child shall have the right to the freedom of expression; this right shall include the freedom to seek, receive and impart information and ideas of all kinds.... either orally, in writing or in print...”.

Recognition of communication as a human right in the UK.
The international recognition of the importance of communication is reflected in UK policy and law.  Numerous reviews and white papers highlight the importance of communication to support child development and wellbeing. Just as in the case for the UN declaration of human rights, barriers to communication would also affect a child’s ability to achieve the five outcomes which are identified in the government green paper ‘Every Child Matters’ (2004) and underpinned in the Children Act 2004.  These outcomes are ‘be healthy’, ‘stay safe’, ‘enjoy and achieve’, ‘make a positive contribution’ and ‘achieve economic wellbeing’.  In the green paper the role of speech and language therapy as a priority in meeting a child’s educational and social outcomes is cited as an example of good practice (p. 19 Department for Education and Skills, 2004). The Children Act specifies the need for the Children’s Commissioner to ‘consult with’ and ‘communicate with’ children regarding the discharge of his/her function (Part 1, section 4, page 2, 2004).  Furthermore, the Act also stipulates that the Children’s Commissioner take steps to accommodate the needs of children who do not have adequate means to make their views known (Part 1, section 4, page 2, 2004).

The Bercow Review
In 2008, mindful of the importance of communication for health and wellbeing the UK government carried out a review of services for children with speech, language and communication needs (SLCN) (Department for Children Schools and Families, 2008).  The evidence gathering process of this review was comprehensive and included a range of enquiry methods.  Whilst the methods of sampling were not reported, the consultation questionnaire received 2000 responses, which considerably exceeds the usual requirements for a 95% confidence interval in findings for the population of the UK (Raosoft, 2014).  Consultation groups were held with a variety of interested parties, including a range of people affected by SLCN and services and professionals employed to support children and young people with SLCN.  Consultations were convened in a diverse selection of geographical locations, but did not include Wales, Scotland or Northern Ireland (so therefore may only be representative of views in England).  The review also commissioned research from a range of UK academics with expertise in SLCN.  It may be concluded, therefore, that the findings of this review are representative of interested parties concerned with SLCN, particularly in England.  The review confirmed international opinion that communication is an essential life skill, stating, “the centrality of communication is not simply a personal statement of value. It is a formal, public and multilateral declaration...[and] is a fundamental human right.” (p. 16).

Summary
The use of language, therefore, is universal; it is the direct or indirect result of biological adaptations in humans to facilitate highly complex levels of cooperation necessary for advanced social life.  Language competence has been proposed as even more essential for participation in a technologically advanced society.  It is recognised internationally at a governmental and legal level to be a fundamental life skill, necessary for health, education as well as for emotional and economic wellbeing, and the protection of human rights.  Indeed, it has of itself been described as a human right (Department for Children Schools and Families, 2008; International Communication Project, 2014).   

The centrality of language to human life was summed up succinctly by Tammet (2014): “there is almost nothing we can do to a human being worse than take away their language and their ability to communicate and... relate to other human beings through language"  (you can listen to Tammet here, the quote is spoken at 04:42 minutes).  The question of whether it is language or some other factor which is the one defining feature of being human may not be answerable.  As stated above, the need for language, however, could be argued as a fundamental factor that enables us to be humans together.

The material from these essays has been adapted from my PhD thesis due to be electronically available from the University of Surrey repository.

References:


Bickerton, D. (1992). Language and Species. Chicago: University of Chicago Press.
Children Act 2004,  (2004).
Department for Children Schools and Families. (2003). Every Child Matters. London: Crown Copyright
Fitch, W. T., Hauser, M. D., & Chomsky, N. (2005). The evolution of the language faculty: Clarifications and implications. Cognition, 97(2), 179-210.  
Hart, B., & Risley, T. R. (1995). Meaningful differences in the everyday experience of young American Children. Baltimore MD: Paul H Brookes Publishing Co.
International Communication Project. (2014). The Universal Declaration of Communication Rights. Retrieved from
Joffe, T. H. (1997). Social pressures have selected for an extended juvenile period in primates. Journal of Human Evolution, 32(6), 593-605.  Retrieved from http://www.sciencedirect.com/science/article/pii/S0047248497901408
Kuhn, P., & Skuterud, M. (2000). Job Search Methods: Internet versus Traditional. Monthly Lab. Rev., 123(3), 3-11.
Law, J., Reilley, S., & Snow, P. C. (2013). Child speech, language and communication need re-examined in a public health context: a new direction for the speech and language therapy profession. Int J Lang Commun Disord, 48(5), 486-496. doi:10.1111/1460-6984.12027
Livingstone, S. (2002). Young People and New Media: Childhood and the Changing Media Environment. London: Sage.
McKenna, K., Green, A., & Gleason, M. (2002). Relationship Formation on the Internet: What’s the Big Attraction? Journal of Social Issues, 58(1), 9-31.
Norman, C. D., & Skinner, H. A. (2006). eHealth Literacy: Essential Skills for Consumer Health in a Networked World. J Med Internet Res, 8(2), e9. doi:10.2196/jmir.8.2.e9
Pinker, S. (1994). The Language Instinct. London: Penguin.
Pinker, S. (2003). Language as an adaptation to the cognitive niche. In M. H. Christiansen & S. Kirby (Eds.), Language evolution. (pp. 16-37). New York, NY, US: Oxford University Press.
Raosoft. (2014). Sample size calculator.   Retrieved from http://www.raosoft.com/samplesize.html
Ruben, R. J. (2000). Redefining the survival of the fittest: communication disorders in the 21st century. Laryngoscope, 110(2 Pt 1), 241-245. doi:10.1097/00005537-200002010-00010
Sampson, G. (1997). Educating Eve; The 'Language Instinct' debate. London: Cassell.
Sanchez-Navarro, J., & Aranda, D. (2012). Messenger and social network sites as tools for sociability, leisure and informal learning for Spanish young people. European Journal of Communication, 28(1), 67-75. doi:10.1177/0267323111432411
Savage, M., Devine, F., Cunningham, N., Taylor, M., Li, Y., Hjellbrekke, J., . . . Miles, A. (2013). A New Model of Social Class? Findings from the BBC's Great British Class Survey Experiment. Sociology, 47(2), 219-250. doi:10.1177/0038038513481128
Skills for Life Network. (2015). About us.   Retrieved from http://www.skillsforlifenetwork.com/article/about-us/2174
Tammet, D. (2014). Are drugs the answer to language learning? - Highlights from a debate hosted by the Guardian and British Academy.   Retrieved from http://www.theguardian.com/education/video/2014/jul/24/are-drugs-the-answer-to-language-learning-video-highlights
The United Nations General Assembly. (1989). Convention on the Rights of the Child Retrieved from
Tomasello, M. (2007). The Human Adaptation for Culture: Public Lecture. London School of Economics.
Tomasello, M. (2008). Origins of Human Communication. Cambridge, MA: MIT Press.
United Nations. (1948). The Universal Declaration of Human Rights.   Retrieved from http://www.un.org/en/documents/udhr/index.shtml
Winston, R. (2002). Human Instinct. London: Bantam Press.
World Health Organisation. (1999). Partners in Life Skills Education; Conclusions from a United Nations Inter-Agency Meeting. Retrieved from
Wright, N. (2010). e-Learning and implications for New Zealand schools: a literature review. Retrieved from Hamilton:

Monday, 11 May 2015

Chatting about screen time on WeSpeechies - Monday

Today on WeSpeechies we have been getting an idea of the issues surrounding screen use and child development, health and wellbeing.  I am collating references and will provide them and more analysis in due course but some key themes are emerging:


  1. There is a large body of opinion based articles in circulation.  This is prevalent in the mainstream press (e.g. Washington Post, Guardian) and blogosphere but does also extend into the grey literature (e.g. Christakis, 2011).  The first stage when approaching the literature on child screen use, therefore, is teasing apart opinion from evidence.  This doesn't mean opinion = bad, evidence = good.  There may be good reasons for forming opinion and opinion clearly highlights evidence of concern.  The more explicit the reasons are for the concern or opinion, however, the better.  Conversely, evidence from peer reviewed studies may be also subject to biased opinion, so just because something has been peer reviewed it doesn't make it failsafe.
  2. Where research has been cited there is a fair amount of misrepresentation. The most common example of this is where associations (e.g. such as found in correlation or regression analysis) are cited to argue that screen use is a causal factor for a negative outcome.  However, another example of misrepresentation is where a research outcome is used to make a generalisation beyond the context of the original research.  An example of this is an article that uses the negative  association between aggressive video games in older children to justify a ban on iPad use for children under the age of 2 years as cited in this Huffington Post article.
  3. Much research is based on associations.  Understanding associations is informative as a potential risk is highlighted, however, causality has not been found.  As highlighted in many other areas of psychology research, the direction of causality is not determined in association studies, or indeed a third, unexamined causal factor may be responsible for the findings in the study reported.  Furthermore, the methodological approach, particularly concerning regression analysis needs to be examined in studies as it may be flawed.  A case of this was reported by Susan Rvachew, here.
Considering the above factors, it is clear from the chat today and the articles cited that there are some concerns around screen use.  Several studies, including this ASHA survey and also this study by Common Sense Media have shown that access to and use of screen based technology has increased. These concerns are justified to varying degrees (some have more evidence to support them than others) and include associations with opportunity loss (e.g. lost opportunity for parent to child interaction), poor outcomes for sleep, obesity risks, and psychological wellbeing.  There are also some concerns highlighted over cognitive and language development but there is less evidence of associations here. This needs further analysis and I'm keen to get the information out to those interested, so for the time being please see links below to the studies highlighted today.  Feel free to comment on them!


Infant and mother play in the presence of television http://t.co/3dHDyqhWbo

Overall media exposure and lang dev at 14 months http://t.co/ZV7CFu4WQp

2004 hours of television exposure associated with attention difficulties http://www.ncbi.nlm.nih.gov/pubmed/15060216

Screen time associated with psychological wellbeing regardless of activity http://www.bristol.ac.uk/sps/news/2010/107.html

Problematic videogame use related to psychological wellbeing but not activity http://www.ncbi.nlm.nih.gov/pubmed/21342010

Avoidant attachment and psychopathology predicts internet addiction http://online.liebertpub.com/doi/abs/10.1089/cyber.2010.0470

5 days at camp with no screens


Gaming and psychosocial adjustment http://t.co/Xtqy0dXbTp


Metaanaylis on violent and prosocial video game use effects (there is one) http://psp.sagepub.com/content/early/2014/01/22/0146167213520459.abstract


Friday, 2 January 2015

Debunking parenting myths: The tale of the incompetent parent, the fiendish forward facing buggy & the developing child.

The poem 'This be the verse' by Philip Larkin starts with "they f*&!k you up, your mum and dad, they may not mean to but they do". It is true that parents are going to get some things wrong, but are they really messing things up quite as much as the media would have us believe?

Last week the UK's Daily Telegraph - education section published an article claiming that child communication development was being damaged as a result of parents' use of forward facing buggies.  The argument followed that forward facing buggies do not facilitate face to face interaction and conversation.  The claims were made by Gail Larkin, president of the National Association of Head Teachers.  You can read the article here. This might be worrying were it not for the fact that there is no evidence that these claims are true. 

In my fifteen year career as a speech and language therapist and now as a researcher into early language development these scare stories blaming parents are not new.  This article could well have been written back in 2005 when the National Literacy Campaign authored a paper entitled Why do many young children lack basic language skills? as part of it's "Talk to your Baby" campaign.  Or it might have been written back in 1995 after a groundbreaking study by Betty Hart and Todd Risley in the United States highlighted the relationship between parental talk to children and child language development.  Similar articles expounding the failings of parents were written in June 2003 , August 2003 and 2004.

It is valid to be concerned about child language development.  Communication through language is a vital skill, necessary for successful social, emotional, academic and ultimately economic wellbeing.  It is also valid to question what influences child language development and seek to optimise the environment children grow up in to support their acquisition of language.  We do know that there are a significant minority of children who genuinely need support due to difficulties with learning to communicate.  The sad fact is that despite this being a fascinating and valuable area of study, some newspaper articles such as the latest in the Daily Telegraph appear to be interested in going no further in this debate than blaming parents for the problem.  In this particular case, to make matters worse, the claims were not valid and were not based on a shred of credible evidence.

Following a brief discussion with other professionals interested in child development on Twitter I felt it necessary to debunk the myths in this latest article that have been reported as fact.  In order to make the claim that forward facing buggies are damaging child language development you need to establish a number of factors based on evidence; first, you need to agree there is evidence that children's communication skills have deteriorated over the last decade, second, that child language development is caused by parents not talking to them enough, third you then need to establish that parents are talking less than they used to, fourth and finally you would need to establish that forward facing buggies cause parents to talk less, and this effect is large enough and lasts for a long enough duration to have an overall effect on parent input to children.

In this blog I have explored these questions with reference to the evidence we currently have;

1.  The article claims that, in general, children's language has deteriorated.
I have heard this concern consistently throughout my clinical experience, and yet there is no empirical evidence to support it.  In areas of social deprivation there does appear to be a higher prevalence of language delay than in more affluent areas (see for example Locke et al; 2002 and the Hart and Risley study cited above), but this factor should not be generalised to a blanket concern about all children, and there is no evidence of change over time.  The only way to be sure that language skills have deteriorated is to compare cohorts of children at different points in time and there have been no such studies reporting a deterioration of language skills.  In fact, in 2003 in response to this very same concern an article in the UK's Times Educational Supplement uncovered 2 unpublished cohort studies, which indicated that, if anything, children's language levels had improved over that previous decade (you can read this article here).

Given this factor, the two further claims in the article that I challenge below are in essence moot points.    Let us explore the claims, however, to see if they might shed light on how we can help children who do present with language learning difficulties.

2.  The article claims that parents are having fewer conversations with their children.
Gail Larkin postulates that, in addition to forward facing buggies, this is because parents are spending too much time talking on their mobile phones or chatting to friends at the school gate.  This issue needs to be broken down to two distinct questions, a; are language learning difficulties caused by a lack of parental talk? and b; are parents actually talking less to their children than previous generations?

a; Are language learning difficulties caused by a lack of parental talk?
There is evidence that children from different families do experience a wide variety in the quantity of language that they hear from their parents.  This has also been found to be related to the child's language development (again see Hart & Risley, and Hoff and Naigles; 2002 for examples of this research).  It is also generally established that the language children hear forms part of the language learning mechanism and so as a clinician I would always advise parents to talk to their child through everyday routines to support child language acquisition. How effective this advice is is a topic for another blog, however, and whilst there is a relationship between parent language input and child language learning, Dorothy Bishop (Professor of Developmental Neuropsychology; University of Oxford) highlighted recently in her blog that as these studies on parent talk and child language learning are based on correlations a cause and effect relationship has not been established.  It may be that a third factor is influencing both parent language input and child language development.  For a more comprehensive discussion on this matter, read Dorothy Bishop's blog here.  The point to be made in this discussion is that, attractive as the proposal may be, there is as yet no evidence that child language learning difficulties are caused by lack of parental talk.

I suppose professionally I find this the most difficult question to address.  Something is going on between parent talk and child language learning, and much more research needs to be carried out in this area, as it is clearly a potential area of value to the speech and language therapy profession.  It is important, however, to be aware of what we know and what we don't yet know, and not to jump to conclusions.  In any case, the argument put forward by the Telegraph does not rest on this fact alone.  If anything, it states the claim that parents are talking less to their children than previous generations.  Let's explore that question, therefore, in a little more detail.

b; Are parents actually talking less to their children than previous generations?
Whilst there is evidence of a wide variety in the amount of language children hear across a population, there is no evidence that the amount of language children hear has changed within a population over time.  On the contrary, the research I have carried out with families in Portsmouth city, UK, reveals a similar distribution of parent talk across the population to that carried out by Hart and Risley in the early 1990s. Other studies have also reported similar distributions over the years, including the Hoff and Naigles study cited above and a recent study of parents in the US by Weisleder and Fernald; 2013.  There is no evidence that parents in general are talking less to their children than previously.

3.  The article claims that forward facing buggies are to blame for the decline in children's language skills.
Again this is not a new concern but was raised in the noughties (around 2005) by the National Literacy Trust's (NLT) 'Talk to Your Baby' campaign.  The NLT commissioned a study at Dundee University exploring the effect of forward facing buggies on parent-child interaction.  The buggies were already being blamed, however, for poor parent-child interaction in a Talk to Your Baby Conference in 2004 before the research findings were reported (see page 3 of conference report here).  To see if there had been any further developments leading to the latest newspaper article I carried out a quick review of the literature.  It yielded 1 review in 2011 (Topping et al) and 1 subsequent empirical  study (Blaiklock; 2013).  The Dundee study was not published in peer reviewed literature but a study report was published by the National Literacy Trust.  No study provided any evidence of a negative effect on child language development.  Effects on parental interaction were at best inconclusive, sample sizes were too small to have any confidence in the outcomes.  The fact is, in terms of empirical evidence, we are a long way from any claim that forward facing buggies are damaging child language development.

To conclude; should parents be forced to fork out on expensive buggies on the grounds of the Telegraph article?  Furthermore, should the media continue to fuel parental guilt based on the opinions of one person?  Whilst debate is to be encouraged in order to support child language development, rather than basing judgement on opinion let's have an informed inclusive discourse based on evidence.

The daily Telegraph has a much wider readership than this blog ever will, so journalists have a duty to report a balanced view of a topic, and there are moves to report science more objectively through the efforts of Sense about Science and The UK's Science Media Centre.  Unfortunately much needs to be done in the field of child learning and development before poor parenting myths are put to bed.