Definition and classification are critical features of scientific research and many areas of practice regardless of whether the phenomena in question are genuinely categorical or continuous. An agreed upon definition of learning disability serves as an essential foundation for research. Without an agreed upon definition that can be implemented reliably and validly, understanding the nature, causes, and best treatments for learning disabilities is unlikely. Although we have not yet achieved a reliable and valid definition and system of classification for learning disabilities, doing so now represents an attainable scientific objective because we now understand the fundamental problem that has prevented development of a reliable and valid definition and classification system, and this understanding points the way to a potential solution in the form of a model that incorporates multiple sources of information in a theoretically grounded way. This project has three specific aims. The first is to further develop and test a constellation model of word-level developmental reading disability. This will be done through simulation, modeling of empirical relations among measures in the large-scale Florida PMRN database, and an empirical study of students with word-level reading disability.
The second aim i s to begin the process of extending the model to other potential learning disabilities in reading and writing. Doing so requires better understanding of the simultaneous development of oral language, reading, and writing skills, and this will be accomplished using a cohort-sequential longitudinal study.
The third aim i s to identify potential subtypes of reading and writing disabilities. When theoretically-motivated potential subtypes have been subject to rigorous empirical test, important knowledge has emerged such as support for a phonological form of developmental reading disability as a developmental difference but not for a surface form. Identifying potential subtypes of reading and writing disabilities will be accomplished by testing a priori proposed subtypes using a latent-variable regression-based approach applied to both reading and writing data collected in the previously mentioned empirical studies.
The proposed studies have the potential to provide a reliable and valid definition and system of classification for learning disabilities. Accomplishing this objective has the potential to accelerate our understanding of the nature of learning disabilities and to develop more effective means of prevention, early identification, and intervention.
|Spencer, Mercedes; Wagner, Richard K (2018) The Comprehension Problems of Children with Poor Reading Comprehension despite Adequate Decoding: A Meta-Analysis. Rev Educ Res 88:366-400|
|Hoff, Erika; Quinn, Jamie M; Giguere, David (2018) What explains the correlation between growth in vocabulary and grammar? New evidence from latent change score analyses of simultaneous bilingual development. Dev Sci 21:|
|Wood, Sarah G; Moxley, Jerad H; Tighe, Elizabeth L et al. (2018) Does Use of Text-to-Speech and Related Read-Aloud Tools Improve Reading Comprehension for Students With Reading Disabilities? A Meta-Analysis. J Learn Disabil 51:73-84|
|Malins, Jeffrey G; Pugh, Kenneth R; Buis, Bonnie et al. (2018) Individual Differences in Reading Skill Are Related to Trial-by-Trial Neural Activation Variability in the Reading Network. J Neurosci 38:2981-2989|
|Quinn, Jamie M; Wagner, Richard K (2018) Using Meta-analytic Structural Equation Modeling to Study Developmental Change in Relations Between Language and Literacy. Child Dev 89:1956-1969|
|Erbeli, Florina; Hart, Sara A; Taylor, Jeanette (2018) Genetic and Environmental Influences on Achievement Outcomes Based on Family History of Learning Disabilities Status. J Learn Disabil :22219418775116|
|Sparapani, Nicole; Connor, Carol McDonald; McLean, Leigh et al. (2018) Direct and Reciprocal Effects among Social Skills, Vocabulary, and Reading Comprehension in First Grade. Contemp Educ Psychol 53:159-167|
|Patael, Smadar Z; Farris, Emily A; Black, Jessica M et al. (2018) Brain basis of cognitive resilience: Prefrontal cortex predicts better reading comprehension in relation to decoding. PLoS One 13:e0198791|
|Kim, Young-Suk Grace; Vorstius, Christian; Radach, Ralph (2018) Does Online Comprehension Monitoring Make a Unique Contribution to Reading Comprehension in Beginning Readers? Evidence from Eye Movements. Sci Stud Read 22:367-383|
|McLean, Leigh; Connor, Carol McDonald (2018) Relations between third grade teachers' depressive symptoms and their feedback to students, with implications for student mathematics achievement. Sch Psychol Q 33:272-282|
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