The effect of dyslexia on information retrieval: A pilot study

Purpose – The purpose of the paper is to resolve a gap in our knowledge of how people with dyslexia interact with Information Retrieval (IR) systems, specifically an understanding of their information searching behaviour. Very little research has been undertaken with this particular user group, and given the size of the group (an estimated 10% of the population) this lack of knowledge needs to be addressed. Design/Methodology/Approach - We use elements of the dyslexia cognitive profile to design a logging system recording the difference between two sets of participants: dyslexic and control users. We use a standard Okapi interface together with two standard TREC topics in order to record the information searching behaviour of these users. We gather evidence from various sources, including quantitative information on search logs, together with qualitative information from interviews and questionnaires. We record variables on queries, documents, relevance assessments and sessions in the search logs. We use this evidence to examine the difference in searching between the two sets of users, in order to understand the effect of dyslexia on the information searching behaviour. A topic analysis is also conducted on the quantitative data to show any effect on the results from the information need. Research limitations/implications – As this is a pilot study, only 10 participants were recruited for the study, 5 for each user group. Due to ethical issues, the number of topics per search was restricted to one topic only. The study shows that the methodology applied is useful for distinguishing between the two user groups, taking into account differences between topic. We outline further research on the back of this pilot study in four main areas. A different approach from the proposed methodology is needed to measure the effect on query variables, which takes account of topic variation. More details on users are needed such as reading abilities, speed of language processing and working memory to distinguish the user groups. Effect of topic on search interaction must be measured in order to record the potential impact on the dyslexic user group. Work is needed on relevance assessment and effect on precision and recall for users who may not read many documents. Findings – Using the log data, we establish the differences in information searching behaviour of control and dyslexic users i.e. in the way the two groups interact with Okapi, and that qualitative information collected (such as experience etc) may not be able to account for these differences. Evidence from query variables was unable to distinguish between groups, but differences on topic for the same variables were recorded. Users who view more documents tended to judge more documents as being relevant, either in terms of the user group or topic. Session data indicated that there may be an important difference between the number of iterations used in a search between the user groups, as there may be little effect from the topic on this variable. Originality/Value – This is the first study of the effect of dyslexia on information search behaviour, and provides some evidence to take the field forward

Writing Development in Struggling Learners

In Writing Development in Struggling Learners, international researchers provide insights into the development of writing skills from early writing and spelling development through to composition, the reasons individuals struggle to acquire proficient writing skills and how to help these learners.; Readership: Academic libraries, graduate students; post-graduate researchers; literacy researchers; educated lay persons; literacy specialists; primary/secondary educators

Writing Development in Struggling Learners

In Writing Development in Struggling Learners, international researchers provide insights into the development of writing skills from early writing and spelling development through to composition, the reasons individuals struggle to acquire proficient writing skills and how to help these learners.; Readership: Academic libraries, graduate students; post-graduate researchers; literacy researchers; educated lay persons; literacy specialists; primary/secondary educators

Literacy development: evidence review

Literacy includes the word-level skills of word reading and spelling and the text-level skills of reading comprehension and writing composition. These skills are involved in virtually all everyday activities. As a result, poor literacy impacts on every aspect of life. Word reading, spelling, reading comprehension, and writing composition are supported by similar language and cognitive skills as well as affective and environment factors. Learning to be literate builds upon existing knowledge of the language from speech. Becoming literate then enables children to learn more about language. However, literacy is unlikely to be achieved without explicit and prolonged instruction. This review provides an evidence base for decision-making during literacy education. We identify key skills that must be in place to enable children to reach their optimum potential and highlight where weakness can suggest a need for extra support. We begin by discussing models of literacy development as these models provide a framework within which to present the evidence base for the rest of the review. We then consider the underlying skills in greater depth, beginning first with the proximal factors that underpin word-level and text-level reading and writing. Then we consider distal child-based and wider environmental factors that indirectly impact on literacy development

The nature of internal representation in the internal lexicon

The first two experiments reported were concerned with the fact and growth of visual and acoustic representations of simple words in the Mental Lexicon. Using a Learning paradigm it was established that some form of visual and acoustic representations are formed within three exposures and that these forms of a word are also a basis for lexical organization. Five experiments, employing different techniques, were aimed at testing the psychological reality of the morphemic structure of prefixed words. It was established that the morphemic structure of some of these words is represented; that the identity of some prefixes is represented; and that some non-specific knowledge concerning the relationship between orthographic and prefix structure is also represented. Finally, the spelling errors of 11 year old children were analysed. This analysis revealed that acoustic, visual (more properly graphemic), and morphemic information, as well as some knowledge of phonotactic rules and statistical regularities, are represented in the Internal Lexicon. It is concluded that the contents of the Internal lexicon are both redundant and heterogeneous. The first two experiments reported were concerned with the fact and growth of visual and acoustic representations of simple words in the Mental Lexicon. Using a Learning paradigm it was established that some form of visual and acoustic representations are formed within three exposures and that these forms of a word are also a basis for lexical organization. Five experiments, employing different techniques, were aimed at testing the psychological reality of the morphemic structure of prefixed words. It was established that the morphemic structure of some of these words is represented; that the identity of some prefixes is represented; and that some non-specific knowledge concerning the relationship between orthographic and prefix structure is also represented. Finally, the spelling errors of 11 year old children were analysed. This analysis revealed that acoustic, visual (more properly graphemic), and morphemic information, as well as some knowledge of phonotactic rules and statistical regularities, are represented in the Internal Lexicon. It is concluded that the contents of the Internal lexicon are both redundant and heterogeneous

Phonetic based sentence level rewriting of questions typed by dyslexic spellers in an information retrieval context

International audienceThis paper introduces a method combining spell checking and phonetic interpretation in order to automatically rewrite questions typed by dyslexic spellers. The method uses a finite state automata framework. Dysorthographics refers to incorrect word segmentation which usually causes classical spelling correc-tors fail. The specificities of the information retrieval context are that flexion errors have no impact since the sentences are lemmatised and filtered and that several hypothesis can be processed for one query. Our system is evaluated on questions collected with the help of an orthophonist. The word error rate on lemmatised sentences falls from 60% to 22% (falls to 0% on 43% of sentences)

Dealing with spelling variation in Early Modern English texts

Early English Books Online contains facsimiles of virtually every English work printed between 1473 and 1700; some 125,000 publications. In September 2009, the Text Creation Partnership released the second instalment of transcriptions of the EEBO collection, bringing the total number of transcribed works to 25,000. It has been estimated that this transcribed portion contains 1 billion words of running text. With such large datasets and the increasing variety of historical corpora available from the Early Modern English period, the opportunities for historial corpus linguistic research have never been greater. However, it has been observed in prior research, and quantified on a large-scale for the first time in this thesis, that texts from this period contain significant amounts of spelling variation until the eventual standardisation of orthography in the 18th century. The problems caused by this historical spelling variation are the focus of this thesis. It will be shown that the high levels of spelling variation found have a significant impact on the accuracy of two widely used automatic corpus linguistic methods - Part-of-Speech annotation and key word analysis. The development of historical spelling normalisation methods which can alleviate these issues will then be presented. Methods will be based on techniques used in modern spellchecking, with various analyses of Early Modern English spelling variation dictating how the techniques are applied. With the methods combined into a single procedure, automatic normalisation can be performed on an entire corpus of any size. Evaluation of the normalisation performance shows that after training, 62% of required normalisations are made, with a precision rate of 95%

Project Hand in Hand

The project “Parents and Teachers Working Hand in Hand : Training Programme for Parents and Teachers of Pupils with Attention Deficit Hyperactivity Disorder (ADHD)” was prepared and co-ordinated by Ankara Provincial Directorate for National Education under the European Union Education and Youth Programme, Lifelong Learning Programme within the framework of Grundtvig Learning Partnership. At the planning stage of the project, as the co-ordinating institution, we wanted to prepare a project for pupils with ADHD because we know that, across the world, almost 5% of students suffer from this disorder and they encounter difficulties in their academic life, in their community and in their social relationships. Both parents and teachers encounter difficulties while they are supporting pupils with ADHD in their school lives. As the second biggest local education authority in Turkey, we decided to prepare this project for parents and teachers of pupils with ADHD to make everyone’s life easier. We shared our thoughts with different people and institutions from different countries and we realised that it is not only a problem in Turkey but also for other countries. As a result, we developed project partnerships with various educational institutions, universities and non-governmental organisations (NGOs) from different countries. The project development stage was completed after contributions from all partners. Initially we had started with 8 partners but after approval for the project and the agreement of National Agencies of each partner countries, we implemented the project with 6 partners starting from 1st October 2007 to 31st July 2009