Non-verbal IQ and change in restricted and repetitive behavior throughout childhood in autism: a longitudinal study using the Autism Diagnostic Interview-Revised by V. Courchesne, R. Bedford, A. Pickles, E. Duku, C. Kerns, P. Mirenda, T. Bennett, S. Georgiades, I. M. Smith, W. J. Ungar, T. Vaillancourt, A. Zaidman-Zait, L. Zwaigenbaum, P. Szatmari, M. Elsabbagh, Pathways Team

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Language delay aggregates in toddler siblings of children with autism spectrum disorder by N Marrus, L P Hall, S J Paterson, J T Elison, J J Wolff, M R Swanson, J Parish-Morris, A T Eggebrecht, J R Pruett, H C Hazlett, L Zwaigenbaum, S Dager, A M Estes, R T Schultz, K N Botteron, J Piven, J N Constantino, for the IBIS Network

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Infants later diagnosed with autism have lower canonical babbling ratios in the first year of life by L. D. Yankowitz, V. Petrulla, S. Plate, B. Tunc, W. Guthrie, S. S. Meera, K. Tena, J. Pandey, M. R. Swanson, J. R. Pruett, M. Cola, A. Russell, N. Marrus, H. C. Hazlett, K. Botteron, J. N. Constantino, S. R. Dager, A. Estes, L. Zwaigenbaum, J. Piven, R. T. Schultz, J. Parish-Morris, The IBIS Network

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