Rhythmic Perception and Entrainment in 5-Year-Old Children
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Rhythmic Perception and Entrainment in 5-Year-Old Children. An Exploration of the Relationship between Temporal Accuracy at Four Isochronous Rates and its Impact on Phonological Awareness and Reading Development. An investigation into how the structure of simple songs and nursery rhymes could best increase ‘large grain’ phonological awareness skills (rhyme and syllable awareness) in 4 to 5 year old children as part of a classroom based pre-literacy strategy. This dissertation is submitted for the degree of Doctor of Philosophy By John P. Verney Supervisor: Professor Usha Goswami The Faculty Of Education Homerton College University of Cambridge University of Cambridge Preface Originally the title of the thesis was ‘Entrainment in 5-Year-Old Children: Temporal Accuracy at Four Isochronous Rates and Its impact on Phonological Awareness and Reading Development…….’ After discussion with my PhD examiners it was considered that this title did not fully represent the content of the thesis, nor would it attract the readers who would find the subject matter interesting and of relevance to further study. However I was reluctant to loose the word ‘entrainment’ from the title because it is used widely in research within the field of neuroscience associated with how brainwave frequencies fall into step with a periodic aural stimulus such as a rhythmic pulse in music or the perception of accents within the speech stream. Entrainment refers not only to an ability to extract the main accents and stress in music and speech, but also to an ability to maintain a perception of pulse for future use. In speech the pulse or accents might become quite ambiguous at times, but the brain can still assemble them with reference to the entrained beat, thus allowing the listener to predict and react to what will come next. In music the brain can also perceive very small changes to the musical beats or accents that occur whenever we perform music but these, sometimes deliberate, inaccuracies do not affect our ability to synchronise movement such as tapping, drumming, or dancing to the rhythms implicit in the performance. Rhythmic perception is perhaps a more familiar term than is ‘entrainment’. It is more generally associated with the extraction of the principle beats in a piece of music that allow us to tap and sing along with it, but it also encompasses the rhythmic regularity found in speech accents and stresses. The thesis also explores in some depth the different musical contexts in which the child encounters rhythmic perception, either whilst drumming to music, a metronome or singing with or without a musical harmonised accompaniment. The modified title is an attempt to place the research into the domains of both an academic readership in experimental psychology and neuroscience and one that is concerned with the teaching of both literacy and music to young children. ii Abstract Phonological awareness is an important component of early literacy and many children struggle to master its key elements, such as the ability to hear syllables and rhymes within the speech stream. The hypothesis explored within this study is that since music and language have parallel auditory perceptual mechanisms then training in rhythmic activities, such as music, could lead to increased understanding of the rhythmic nature required to decode early language and literacy skills. Previous research investigating the relationship between the constructs of music perception and phonological awareness has been promising, but generally inconclusive. Within the study I examine whether there is a link between the temporal processing required to process rhythmic entrainment in both phonological awareness skills and music. The data are interpreted with respect to a theoretical framework linking music and language based on temporal sampling. The ‘temporal sampling theory’ (Goswami, 2011) suggests that the decoding of both language and music is linked to the perception of accent and beat, and that the ability to hear the onset of these accents is critical within a stream of auditory events. To this end rhythmic entrainment tasks were presented in a range of musical activities including drumming along to music and singing nursery songs and rhymes. The musical and rhythmic activities were given in several different forms, to see which would be most effective in showing the children’s ability to synchronise to a beat. These were all presented at four pulse rates (400 ms, 500 ms, 666 ms, 1000 ms). Data were collected over a period of 2 years commencing in November 2009. In Study1 93 4 and 5-year-old children were tested and in Study 2 data were collected from a further 99. In addition to psychometric tests for IQ, Word Recall, teachers from the schools provided information from the children’s Foundation Stage profiles. Phonological awareness skills (syllable and rhyme) were also measured, as was reading development. Overall, children showed greater temporal accuracy (rhythmic entrainment) in keeping time with a musical piece than in keeping time with a metronome. Entrainment accuracy was greatest at the 500 ms rate, the only rate for which entrainment was as accurate with iii music and metronome. Individual differences in rhythmic entrainment whilst drumming were not linked to I.Q. Children were more temporally accurate when singing than in the rhythmic entrainment tasks and temporal accuracy at pulse rates of 500 ms (2 Hz) and 666 ms (1.5 Hz) showed some significant links to rhyme awareness and to reading. Temporal accuracy in singing a rhyming word on time was also greatest at 500 ms, although simply singing along to music did not show a preferred rate. Unexpectedly, temporal accuracy in singing was linked to I.Q., and was not linked independently to syllable and rhyme awareness. However, temporal accuracy in singing at the 500 ms rate was linked to reading. In Sample 2 of the PhD I report on the results of a seven-week three group matched intervention study of 99 children. The intervention was designed to investigate whether a short intervention of either music or ‘rhythmic speech’ based around the preferred rate of 500ms would lead to improved phonological awareness skills. Group 1 was given a programme of music games and songs, and group 2 was given a matched programme of games and ‘rhythmic speech’, without musical accompaniment or singing, to promote syllable and rhyme awareness. A third group, who received no additional training acted as a control. The results show that an intervention based on rhythmic structure in either a rhythmic speech form or in musical form can be successful in improving children’s phonological awareness skills. The rhythmic speech programme proved to be a more successful vehicle than the music intervention in improving the phonological skills of this group of 90 children. Both interventions were successful in improving both rhyme and syllable awareness, but the greatest improvements came in the syllable tests. There was further evidence that an intervention in either rhythmic speech or music would impact on the children’s future reading skills. Both interventions produced significantly higher correlations with a Word Reading test than the control group. There was no evidence to suggest that a musical intervention based on tapping along to a beat was of more benefit than one based on rhythmic speech. Overall the evidence gathered from the data in this study does suggest that there are direct links between rhythmic awareness, as measured by tapping to an iv isochronous beat, and the children’s capacity to decode phonological information. The favoured rate at which the brain processes information in both domains, thus linking them together, is at a pulse rate with an Inter Onset Interval set to 500ms. This study’s results could be used to support the development of rhythmic based interventions, in both a rhythmic speech and musical form in support of early literacy skills in 4 and 5 –year –old children. v Acknowledgements I firstly thank my supervisor Professor Usha Goswami for her academic mentorship. There is no doubt that I would have struggled to achieve the necessary standards and rigour of research without her help and guidance. I feel fortunate to have found, probably the only person, who could have helped me bring this project to fruition after many years of searching for the right road to travel. I must also thank all the many members within the Centre For Neuroscience and Education who have supported and helped to keep me going over the years. I would particularly like to thank Nichola Daily who has been of enormous help to me in providing administrative support over the long distance between Northumberland and Cambridge. The whole project was reliant on the co-operation of the seven small schools in Northumberland and they all need a mention:- Amble First, Amble St Cuthbert’s, Broomhill, Felton, Red Row, Shilbottle and Swarland. All the headteachers and reception class teachers gave me access to their children without hesitation, and helped me organise the research. The one area of the research that gave me joy, an unusual commodity in academic research, was the children. Working with them and experiencing their delight at the music and rhymes was the reason for my desire to embark on this project. It is so important to foster this joy in education and find ways to make learning exciting and meaningful. This period of study has been a family affair, and certainly could not have taken place without their support. The long distance between the North and South of England could not have been overcome without the happy accident of my sister moving to Huntingdon. Dorothy and Gerry have provided a second home for my wife and I, especially when I was completing the MEd and needed a base every week. My wife, Margaret, of course has gone through all of the ups and downs associated with trying to complete a PhD when one is a little older than most – and her love and support have been of paramount importance.