Mattie, L. J., & Fanta, D. (2023). Joint engagement and early language abilities in young children with Down syndrome. Frontiers in Psychology, 14, 1-9. doi: 10.3389/fpsyg.2023.1152559 (Open Access)

Channell, M. M., Mattie, L. J., Schworer, E. K., Fidler, D. J., & Esbensen, A. J. (2023). Using the SSiS rating scales to assess social skills in youth with Down syndrome. Frontiers in Psychology, 14, 1-13. doi: 10.3389/fpsyg.2023.1105520 (Open Access)

Mattie, L. J., Loveall, S. J., Channell, M. M., & Rodgers, D. (2023). Perspectives on adaptive functioning and intellectual functioning measures for intellectual disabilities behavioral research. Frontiers in Psychology, 14, 1-13. doi: 10.3389/fpsyg.2023.1084576 (Open Access)

Vidal, V., Wachholtz, D, Mattie, L. J., DeThorne, L. S. (2022). “It takes a community:” How environmental systems construct in/competence in autistic peer interactions. Language, Speech, and Hearing Services in Schools, 54, 63-81. doi: 10.1044/2022_LSHSS-22-00028

Loveall, S. J., Channell, M. M., Mattie, L. J., & Barkheimer, A. (2022). Inclusion of individuals with neurodevelopmental disorders in norm-referenced language assessments. Frontiers in Psychology,13.929-433. doi: 10.3389/fpsyg.2022.929433 (Open Access)

Mattie, L. J. & Hamrick, L. R. (2022). Early communication development in infants and toddlers with fragile X syndrome. Autism & Developmental Language Impairments, 7, 1–14. doi: 10.1177/23969415221099403 (Open Access)

Moser, C., Mattie, L. J., Abbeduto, L., & Klusek, J. (2021). The FMR1 premutation phenotype and mother-child synchrony in fragile X syndrome. American Journal on Intellectual and Developmental Disabilities, 26(4), 443-446. doi: 10.1352/1944-7558-126.6.443

Mattie, L. J., & Hadley, P. L. (2021). Characterizing the richness of maternal input for word learning in neurogenetic disorders. Seminars in Speech & Language, 42(4), 301-317. doi: 10.1055/s-0041-1730914

Mattie, L. J., (2021). Translational research and clinical implications regarding communication outcomes in neurogenetic disorders. Seminars in Speech and Language, 42(4), 275-276. doi: 10.1055/s-0041-1730986

Channell, M. M.,^[1] Mattie, L. J.,^[1] Hamilton, D. R., Capone, G. T., Mahone, M., Sherman, S. L., Rosser, T. C., Reeves, R. H., & Kalb, L. G. (2021). Capturing cognitive and behavioral variability among individuals with Down syndrome: A latent profile analysis. Journal of Neurodevelopmental Disorders, 13, 1-14. doi: 10.1186/s11689-021-09365-2 (Open Access)

Hendrix, J. A., Amon, A., Abbeduto, L., Agiovlasitis, S., Alsaied, T, Anderson, H. A., Bain, L., J., Baumer, N., Bhattacharyya, A., Bogunovic, D., Botteron, K., Capone, C., Chandan, P., Chase, I., Chicoine, B., Cieuta-Walti, C., DeRuisseau, L. R., Durand, S., Esbensen, A., …Yi, J. S. (2020). Opportunities, barriers, and recommendations in Down syndrome research. Translational Science of Rare Diseases, 5, 99–129. doi: 10.3233/TRD-200090 (Open Access)

Versaci, T. M., Mattie, L. J., & Hendrix, J. A., Amon, A., Abbeduto, L., Agiovlasitis, S., Alsaied, T, Anderson, H. A., Bain, L., J., Baumer, N., Bhattacharyya, A., Bogunovic, D., Botteron, K., Capone, C., Chandan, P., Chase, I., Chicoine, B., Cieuta-Walti, C., DeRuisseau, L. R., Durand, S., Esbensen, A., …Yi, J. S. (2020). Opportunities, barriers, and recommendations in Down syndrome research. Translational Science of Rare Diseases, 5, 99–129. doi: 10.3233/TRD-200090

Imming, L. J. (2020). Down syndrome and autism spectrum disorder dual diagnosis: Important considerations for speech-language pathologists. American Journal of Speech-Language Pathology, 30, 34-46. doi: 10.1044/2020_AJSLP-20-00050.

Hahn, L. J., Hamrick, L., Keller, B., & Roberts, J. E. (2020). Autism spectrum disorder-associated behavior in infants with Down syndrome. Journal of Health Science & Education, 4(2), 1-6. doi: 10.0000/JHSE.1000180

Hahn, L. J., Brady, N. C. & Versaci, T. (2019). Communicative use of triadic eye gaze in children with Down syndrome, autism spectrum disorder and other intellectual and developmental disabilities. American Journal of Speech-Language Pathology, 1-14. doi: 10.1044/2019_AJSLP-18-0155

Channell, M. M., Hahn, L. J., Rosser, T., Strang, J., Capone, G., … & the Down Syndrome Cognition Project. (2019). Characteristics associated with autism spectrum disorder risk in individuals with Down syndrome. Journal of Autism and Developmental Disorders, 49(9), 3543-3556. doi: 10.1007/s10803-019-04074-1

Hahn, L. J., Loveall, S. J., Savoy, M. T., Neumann, A. M., & Ikuta, T. (2018). Joint attention in Down syndrome: A meta-analysis. Research in Developmental Disabilities, 78, 89-102. doi: 10.1016/j.ridd.2018.03.013

Will, E., Caravella, K., Hahn, L. J., Fidler, D. J., & Roberts, J. E. (2018). Adaptive behavior trends in infants and toddlers with Down syndrome and fragile X syndrome. American Journal of Medical Genetics Part B: Neuropsychiatric Genetics, 177B, 358-368. doi: 0.1002/ajmg.b.32619

Hahn, L. J., Brady, N. C., McCary, L., Rague, L., & Roberts, J. E. (2017). Social communication in infants with fragile X syndrome and infant siblings of children with autism. Research in Developmental Disabilities, 41, 169-180. doi: 10.1016/j.ridd.2017.10.004 

Loveall, S., Conners, F., Tungate, A., Hahn, L. J., & Osso, T. (2017). A cross-sectional analysis of executive functioning in Down syndrome from 2-35 years. Journal of Intellectual Disability Research, 61(9), 877-887. doi: 10.1111/jir.12396

Warren, S. F., Brady, N. C., Fleming, K., & Hahn, L. J. (2017). The longitudinal effect of parenting on adaptive behavior in children with boys with fragile X syndrome. Journal of Autism and Developmental Disorders, 47, 768-784. doi: 10.1007/s10803-016-2999-7

Hahn, L. J. (2016). Joint attention and early social developmental cascades in neurogenetic disorders. International Research Review of Intellectual and Developmental Disabilities, 51, 123-152. doi: 10.1016/bs.irrdd.2016.08.002

Hahn, L. J., Brady, N. C., Fleming, K., & Warren, S. F. (2016). Joint engagement and early language in young children with fragile X syndrome. Journal of Speech, Language, and Hearing Research, 59(5), 1087-1098. doi: 10.1044/2016_JSLHR-L-15-0005

Scherr, J. F., Hahn, L. J., Hooper, S., Hatton, D., & Roberts, J. E. (2016). Verbal working memory and cortisol over time in boys with fragile X syndrome. Brain and Cognition, 102, 80-90. doi:10.1016/j.bandc.2015.12.002

Hahn, L. J., Brady, N. C., Warren, S. F., & Fleming, K. (2015). Do children with fragile X syndrome show declines or plateaus in adaptive behavior over time? American Journal of Intellectual and Developmental Disabilities, 120(5), 412–432. doi: 10.1352/1944-7558-120.5.412

Hahn, L. J., Zimmer, B. J., Brady, N., Siwnburne Romine, R. E., & Fleming, K. K. (2014). The role of maternal gesture use in speech use by children with fragile X syndrome. American Journal of Speech-Language Pathology, 23, 146-159. doi:10.1044/2013_AJSLP-13-0046

Hahn, L. J., Fidler, D. J., & Hepburn, S. (2014). Adaptive behavior and problem behavior in young children with Williams Syndrome. American Journal of Intellectual and Developmental Disabilities, 119(1), 43-63. doi:10.1352/1944-7558-119.1.49

Daunhauer, L. A., Fidler, D. J., Hahn, L., Will, E., Raitano, N. L. & Hepburn, S. (2014). Profiles of everyday executive functioning in young children with Down syndrome. American Journal of Intellectual and Developmental Disabilities, 119(4), 303-318. doi:10.1352/1944-7558-119.4.303

Brady, N. C., Anderson, C., Hahn, L. J., Obermeier, S. M., & Kapa, L. L. (2014). Eye-tracking as a measure of receptive vocabulary in children with autism spectrum disorders. Augmentative and Alternative Communication, 30(2), 147-159. >doi:10.3109/07434618.2014.904923

Hahn, L. J., Fidler, D. J., Hepburn, S. L., & Rogers, S. J. (2013) Early intersubjective skills and the understanding of intentionality in young children with Down syndrome. Research in Developmental Disabilities, 34, 4455-4465. doi:10.1016/j.ridd.2013.09.027

Fidler, D. J., Lunkenheimer, E., & Hahn, L. (2011). Emerging behavioral phenotypes and dynamic systems theory. International Review of Research in Intellectual Disabilities, 40, 17-42.

Hepburn, S. L., Fidler, D., Hahn, L., & Philofsky, A. (2011). Social-perceptual and social-cognitive skills in young children with Williams syndrome: Evidence for discontinuity. International Review of Research in Intellectual Disabilities, 40, 181-210