Cognitive-linguistic performances of multilingual university students suspected of dyslexia.

High-performing adults with compensated dyslexia pose particular challenges to dyslexia diagnostics. We compared the performance of 20 multilingual Finnish university students with suspected dyslexia with 20 age-matched and education-matched controls on an extensive test battery. The battery tapped various aspects of reading, writing, word retrieval, phonological processing and other cognitive functions relevant for dyslexia. Reading and writing were examined in the two domestic languages, Swedish and Finnish. The most prominent group differences in reading and writing emerged on accuracy measures in both languages (reading text aloud, proofreading, writing to dictation, free writing). The dyslexia group also performed less well on speeded segmentation of written input, complex speeded naming and complex phoneme manipulation. The pattern of results fits the phonological deficit hypothesis of dyslexia and indicates the presence of pervasive underlying defects in compensated dyslexia.

[1]  Ulrika Wolff.  Phonological and Surface Subtypes among University Students with Dyslexia , 2009 .

[2]  K. Sjöholm.  Swedish, Finnish, English? Finland's Swedes in a changing world , 2004 .

[3]  M. Bruck.  Word-Recognition Skills of Adults with Childhood Diagnoses of Dyslexia. , 1990 .

[4]  Margaret J. Snowling,et al.  Phonological processing skills of dyslexic students in higher education: A preliminary report , 1997 .

[5]  J. Richard Hanley,et al.  Reading and Spelling Impairments in Undergraduate Students with Developmental Dyslexia , 1997 .

[6]  F. Ramus.  Neurobiology of dyslexia: a reinterpretation of the data. , 2004, Trends in neurosciences.

[7]  Nonie K. Lesaux,et al.  The Effects of Timed and Untimed Testing Conditions on the Reading Comprehension Performance of Adults with Reading Disabilities , 2006 .

[8]  P. Meara.  Hidden Reading Problems in ESL Learners. , 1985 .

[9]  V Virsu,et al.  Temporal order and processing acuity of visual, auditory, and tactile perception in developmentally dyslexic young adults , 2001, Cognitive, affective & behavioral neuroscience.

[10]  R. C. Oldfield.  The assessment and analysis of handedness: the Edinburgh inventory. , 1971, Neuropsychologia.

[11]  F. Simmons,et al.  The reading comprehension abilities of dyslexic students in higher education. , 2000, Dyslexia.

[12]  E Miles,et al.  Dyslexia may show a different face in different languages. , 2000, Dyslexia.

[13]  F. Fazio,et al.  Dyslexia: Cultural Diversity and Biological Unity , 2001, Science.

[14]  Ulrika Wolff.  Characteristics and varieties of poor readers , 2005 .

[15]  M. Snowling,et al.  Cognitive assessment of dyslexic students in higher education. , 2002, The British journal of educational psychology.

[16]  M. Laine,et al.  The adaptation of an adult group screening test for dyslexia into Finland-Swedish: normative data for university students and the effects of language background on test performance. , 2007, Scandinavian journal of psychology.

[17]  F. Ramus.  Outstanding questions about phonological processing in dyslexia. , 2001, Dyslexia.

[18]  Marcin Szczerbinski,et al.  & Cognitive Profiles of Adult Developmental Dyslexics: Theoretical Implications , 2022 .

[19]  J. Lehto,et al.  Assessing dyslexia in Finnish high-school students: a pilot study , 2000 .

[20]  Colin M. Macleod,et al.  Interdimensional interference in the Stroop effect: uncovering the cognitive and neural anatomy of attention , 2000, Trends in Cognitive Sciences.

[21]  W. Crozier,et al.  Dyslexia and difficulties with study skills in higher education , 2006 .

[22]  Heikki Lyytinen,et al.  Heterogeneity in adult dyslexic readers: Relating processing skills to the speed and accuracy of oral text reading , 2001 .

[23]  Nonie K. Lesaux,et al.  Persistence of Phonological Processing Deficits in College Students with Dyslexia Who Have Age-Appropriate Reading Skills , 2001, Journal of learning disabilities.

[24]  P. H. Seymour,et al.  Foundation literacy acquisition in European orthographies. , 2003, British journal of psychology.

[25]  George K. Georgiou,et al.  University students with a significant history of reading difficulties: what is and is not compensated? , 2007 .

[26]  B. Shaywitz,et al.  A definition of dyslexia , 2003 .

[27]  Uta Frith,et al.  Paradoxes in the definition of dyslexia , 1999 .