American Psychiatric Association. (2000). Diagnostic and statistical manual of mental disorders (4th Ed., text rev.). Washington, DC. doi:10.1176/appi.books.9780890423349.
Anderson, D. K., Lord, C., Risi, S., DiLavore, P. S., Shulman, C., Thurm, A., Welch, K., & Pickles, A. (2007). Patterns of growth in verbal abilities among children with autism spectrum disorder. Journal of Consulting and Clinical Psychology, 75(4), 594. doi:10.1037/0022-006X.75.4.594.
Article
PubMed
Google Scholar
Bakeman, R., & Adamson, L. B. (1984). Coordination attention to people and objects in mother-infant and peer-infant interaction. Child Development, 55(4), 1278–1289. doi:10.2307/1129997.
Article
PubMed
Google Scholar
Baranek, G. T., Barnett, C. R., Adams, E. M., Wolcott, N. A., Watson, L. R., & Crais, E. R. (2005). Object play in infants with autism: methodological issues in retrospective video analysis. American Journal of Occupational Therapy, 59(1), 20–30. doi:10.5014/ajot.59.1.20.
Article
PubMed
Google Scholar
Bates, E. (1979). The emergence of symbols: Cognition and communication in infancy. New York: Academic Press.
Google Scholar
Belsky, J., & Most, R. K. (1981). From exploration to play: A cross-sectional study of infant free play behavior. Developmental Psychology, 17(5), 630–639. doi:10.1037/0012-1649.17.5.630.
Article
Google Scholar
Belsley, D. A., Kuh, E., & Welsch, R. (1980). Regression diagnostics: Identifying influential data and sources of collinearity. New York: Wiley.
Book
Google Scholar
Bishop, S. L., Guthrie, W., Coffing, M., & Lord, C. (2011). Convergent validity of the Mullen Scales of Early Learning and the differential ability scales in children with autism spectrum disorders. American Journal on Intellectual and Developmental Disabilities, 116(5), 331–343. doi:10.1352/1944-7558-116.5.331.
Article
PubMed
Google Scholar
Bloom, L. (1993). The transition from infancy to language: Acquiring the power of expression. New York: Cambridge University Press.
Book
Google Scholar
Bottema-Beutel, K., Yoder, P. J., Hochman, J. M., & Watson, L. R. (2014). The role of supported joint engagement and parent utterances in language and social communication development in children with autism spectrum disorder. Journal of Autism and Developmental Disorders, 44(9), 2162–2174. doi:10.1007/s10803-014-2092-z.
Article
PubMed
PubMed Central
Google Scholar
Bruner, J. S. (1981). The social context of language acquisition. Language and Communication, 1(2–3), 155–178. doi:10.1016/0271-5309(81)90010-0.
Article
Google Scholar
Carpenter, M. (2006). Instrumental, social, and shared goals and intentions in imitation. In S. J. Rogers & J. H. G. Williams (Eds.), Imitation and the social mind: Autism and typical development (48–70). New York: Guilford Press.
Google Scholar
Carpenter, M., Nagell, K., Tomasello, M., Butterworth, G., & Moore, C. (1998). Social cognition, joint attention, and communicative competence from 9 to 15 months of age. Monographs of the Society for Research in Child Development, 63(4), i–174. doi:10.2307/1166214.
Article
PubMed
Google Scholar
Carpenter, M., Pennington, B. F., & Rogers, S. J. (2002). Interrelations among social-cognitive skills in young children with autism. Journal of Autism and Developmental Disorders, 32(2), 91–106. doi:10.1023/A:1014836521114.
Article
PubMed
Google Scholar
Carpenter, R. L., Mastergeorge, A. M., & Coggins, T. E. (1983). The acquisition of communication intentions in infants eight to fifteen months of age. Language and Speech, 26(2), 101–116. doi:10.1177/002383098302600201.
PubMed
Google Scholar
Coggins, T., & Carpenter, R. (1981). The communicative intention inventory: A system for observing and coding children’s early intentional communication. Applied Psycholinguistics, 2(3), 235–251. doi:10.1017/S0142716400006536.
Article
Google Scholar
Cohen, J. (1988). Statistical power analysis for the behavioral sciences. New York: Academic Press.
Google Scholar
DeMyer, M. K., Barton, S., DeMyer, W. E., Norton, J., Allen, J., & Steele, R. (1973). Prognosis in autism: A follow-up study. Journal of Autism and Childhood Schizophrenia, 3(3), 199–246. doi:10.1007/BF01538281.
Article
PubMed
Google Scholar
DiLavore, P. C., Lord, C., & Rutter, M. (1995). The pre-linguistic autism diagnostic observation schedule. Journal of Autism and Developmental Disorders, 25, 355–379. doi:10.1007/BF02179373.
Article
PubMed
Google Scholar
Dunham, P., Dunham, F., Tran, S., & Akhtar, N. (1991). The nonreciprocating robot: Effects on verbal discourse, social play, and social referencing at two years of age. Child Development, 62(6), 1489–1502. doi:10.2307/1130821.
Article
PubMed
Google Scholar
Enders, C. K. (2011). Applied missing data analysis. New York: The Guilford Press.
Google Scholar
Fenson, L., Marchman, V. A., Thal, D. J., Dale, P. S., Reznick, J. S., & Bates, E. (2007). Macarthur-bates communicative development inventories: User’s guide and technical manual (2nd ed.). Baltimore: Brookes.
Google Scholar
Gillberg, C., & Steffenburg, S. (1987). Outcome and prognostic factors in infantile autism and similar conditions: A population-based study of 46 cases followed through puberty. Journal of Autism and Developmental Disorders, 17(2), 273–287. doi:10.1007/BF01495061.
Article
PubMed
Google Scholar
Gotham, K., Pickles, A., & Lord, C. (2009). Standardizing ADOS scores for a measure of severity in autism spectrum disorders. Journal of Autism and Developmental Disorders, 39, 693–705. doi:10.1007/s10803-008-0674-3.
Article
PubMed
Google Scholar
Gotham, K., Risi, S., Pickles, A., & Lord, C. (2007). The autism diagnostic observation schedule (ADOS): Revised algorithms for improved diagnostic validity. Journal of Autism and Developmental Disorders, 37, 400–408. doi:10.1007/s10803-006-0280-1.
Article
Google Scholar
Hunsley, J., & Meyer, G. J. (2003). The incremental validity of psychological testing and assessment: Conceptual, methodological, and statistical issues. Psychological Assessment, 15(4), 446–455. doi:10.1037/1040-3590.15.4.446.
Article
PubMed
Google Scholar
Ingersoll, B. (2008). The social role of imitation in autism: Implications for the treatment of imitation deficits. Infants and Young Children, 21(2), 107–119. doi:10.1097/01.IYC.0000314482.24087.14.
Article
Google Scholar
Ingersoll, B. (2010). Brief report: Pilot randomized controlled trial of reciprocal imitation training for teaching elicited and spontaneous imitation to children with autism. Journal of Autism and Developmental Disorders, 40(9), 1154–1160. doi:10.1007/s10803-010-0966-2.
Article
PubMed
PubMed Central
Google Scholar
Ingersoll, B., & Schreibman, L. (2006). Teaching reciprocal imitation skills to young children with autism using a naturalistic behavioral approach: Effects on language, pretend play, and joint attention. Journal of Autism and Developmental Disorders, 36, 487–505. doi:10.1007/s10803-006-0089-y.
Article
PubMed
Google Scholar
Kaye, K. (1982). The mental and social life of babies: How parents create persons. Chicago: Harvester Press.
Google Scholar
Kaye, K., & Charney, R. (1980). How mothers maintain “dialogue” with two-year-olds. In D. Olson (Ed.), The social foundations of language and thought (211–230). New York: Norton.
Google Scholar
Kobayashi, R., Murata, T., & Yoshinaga, K. (1992). A follow-up study of 201 children with autism in Kyushu and Yamaguchi areas, Japan. Journal of Autism and Developmental Disorders, 22(3), 395–411.
Article
PubMed
Google Scholar
Leaf, R., & McEachin, J. (1999). A work in progress: Behavior management strategies and a curriculum for intensive behavioral treatment of autism. New York: DRL Books.
Google Scholar
Libertus, K., & Needham, A. (2011). Reaching experience increases face preference in 3-month-old infants. Developmental Science, 14(6), 1355–1364. doi:10.1111/j.1467-7687.2011.01084.x.
Article
PubMed
PubMed Central
Google Scholar
Lifter, K., Gitlin-Weiner, K., Sandgrund, A., & Schafer, C. (2000). Linking assessment to intervention for children with developmental disabilities or at-risk for developmental delay: The developmental play assessment (DPA) instrument. Play Diagnosis and Assessment, 12, 228–261.
Google Scholar
Lifter, K., Gitlin-Weiner, K., Sandgrund, A., & Schafer, C. (2000). Linking assessment to intervention for children with developmental disabilities or at-risk for developmental delay: The Developmental Play Assessment (DPA) instrument. In K. Gitlin-Weiner, A. Sandgrund, & C.E. Schaefer (Eds.), Play diagnosis and assessment (2nd Ed., 228–261). New York: Wiley.
Google Scholar
Lord, C., Risi, S., Lambrecht, L., Cook, E. H., Leventhal, B. L., DiLavore, P. C., Pickles, A., & Rutter, M. (2000). The Autism diagnostic observations schedule- generic: A standard measure of social and communication deficits associated with the spectrum of autism. Journal of Autism and Developmental Disorders, 30, 205–223. doi:10.1023/A:1005592401947.
Article
PubMed
Google Scholar
Lord, C., Rutter, M., & Le Couteur, A. (1994). Autism diagnostic interview- revised: A revised version of a diagnostic interview for caregivers of individuals with possible pervasive developmental disorders. Journal of Autism and Developmental Disorders, 24, 659–685. doi:10.1007/BF02172145.
Article
PubMed
Google Scholar
Maurice, C., Green, G., & Luce, S. C. (1996). Behavioral intervention for young children with autism: A manual for parents and professionals. Austin, TX: Pro-Ed.
Google Scholar
McDuffie, A., Turner, L., Stone, W., Yoder, P., Wolery, M., & Ulman, T. (2007). Developmental correlates of different types of motor imitation in young children with autism spectrum disorders. Journal of Autism and Developmental Disorders, 37(3), 401–412. doi:10.1007/s10803-006-0175-1.
Article
PubMed
Google Scholar
McDuffie, A., Yoder, P., & Stone, W. (2005). Prelinguistic predictors of vocabulary in young children with autism spectrum disorders. Journal of Speech, Language and Hearing Research, 48(5), 1080–1097. doi:10.1044/1092-4388(2005/075).
Article
Google Scholar
McEvoy, R. E., Rogers, S. J., & Pennington, B. F. (1993). Executive function and social communication deficits in young autistic children. Journal of Child Psychology and Psychiatry, 34(4), 563–578. doi:10.1111/j.1469-7610.1993.tb01036.x.
Article
PubMed
Google Scholar
McLean, L. K. S. (1990). Communication development in the first two years of life: A transactional process. Zero to Three, 11, 13–19.
Google Scholar
Meltzoff, A., & Gopnik, A. (1993). The role of imitation in understanding persons and developing a theory of mind. In S. Baron-Cohen, H. Tager-Flusberg & D. Cohen (Eds.), Understanding other minds: Perspectives from autism (335–366). New York: Oxford University Press.
Google Scholar
Mullen, E. M. (1995). Mullen scales of early learning (AGS ed.). Los Angeles, CA: Western Psychological Services.
Mundy, P., Delgado, C., Block, J., Venezia, M., Hogan, A., & Seibert, J. (2003). A manual for the abridged Early Social Communication Scales (ESCS). Coral Gables, FL: University of Miami.
Google Scholar
Mundy, P., Sigman, M., Ungerer, J., & Sherman, T. (1987). Nonverbal communication and play correlates of language development in autistic children. Journal of Autism and Developmental Disorders, 17(3), 349–364. doi:10.1007/BF01487065.
Article
PubMed
Google Scholar
Nadel, J., Guérini, C., Pezé, A., & Rivet, C. (1999). The evolving nature of imitation as a format for communication. In J. Nadel & G. Butterworth (Eds.), Imitation in infancy: Cambridge studies in cognitive perceptual development (209–234). New York: Cambridge University Press.
Google Scholar
Paul, R., & Cohen, D. J. (1984). Outcomes of severe disorders of language acquisition. Journal of Autism and Developmental Disorders, 14(4), 405–421. doi:10.1007/BF02409831.
Article
PubMed
Google Scholar
Plumb, A. M., & Wetherby, A. M. (2013). Vocalization development in toddlers with autism spectrum disorder. Journal of Speech, Language, and Hearing Research, 56(2), 721–734. doi:10.1044/1092-4388(2012/11-0104).
Article
PubMed
Google Scholar
R Core Team (2013). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0, URL http://www.R-project.org/.
Rogers, S. J. (1999). An examination of the imitation deficit in autism. In J. Nadel & G. Butterworth (Eds.), Imitation in infancy (pp. 254–283). New York: Cambridge University Press.
Google Scholar
Rogers, S. J., Bennetto, L., McEvoy, R., & Pennington, B. F. (1996). Imitation and pantomime in high-functioning adolescents with autism spectrum disorders. Child Development, 67, 2060–2073.
Article
PubMed
Google Scholar
Sameroff, A. J. (Ed.). (2009). The transactional model of development: How children and contexts shape each other. Washington, DC: American Psychological Association.
Google Scholar
Sandbank, M. S., & Yoder, P. (2014). Measuring representative communication in 3-year-olds with intellectual disabilities. Topics in Early Childhood Special Education, 34, 133–141. doi:10.1177/0271121414528052.
Article
PubMed
PubMed Central
Google Scholar
Scaife, M., & Bruner, J. S. (1975). The capacity for joint visual attention in the infant. Nature, 253(5489), 265–266. doi:10.1038/253265a0.
Article
PubMed
Google Scholar
Sechrest, L. (1963). Incremental validity: A recommendation. Functional and Psychological Measurement, 13(1), 153–158. doi:10.1177/001316446302300113.
Article
Google Scholar
Shavelson, R. J., Webb, N. M., & Rowley, G. L. (1989). Generalizability theory. American Psychologist, 44(6), 922–932. doi:10.1037//0003-066X.44.6.922.
Article
Google Scholar
Sigman, M., & Ruskin, E. (1999). Continuity and change in the social competence of children with autism, down syndrome, and developmental delays. Monographs of the Society for Research in Child Development, 64(1), 1–139. doi:10.1111/1540-5834.00009.
Article
PubMed
Google Scholar
Smith, I. M. (1998). Gesture imitation in autism I: Nonsymbolic postures and sequences. Cognitive Neuropsychology, 15(6–8), 747–770. doi:10.1080/026432998381087.
Article
PubMed
Google Scholar
Smith, I. M., & Bryson, S. E. (1994). Imitation and action in autism: A critical review. Psychological Bulletin, 116(2), 259–273. doi:10.1037/0033-2909.116.2.259.
Article
PubMed
Google Scholar
Sommerville, J. A., Woodward, A. L., & Needham, A. (2005). Action experience alters 3-month-old infants’ perception of others’ actions. Cognition, 96(1), B1–B11. doi:10.1016/j.cognition.2004.07.004.
Article
PubMed
PubMed Central
Google Scholar
Stone, W. L., Ousley, O. Y., & Littleford, C. D. (1997). Motor imitation in young children with autism: What’s the object? Journal of Abnormal Child Psychology, 25, 475–485. doi:10.1023/A:1022685731726.
Article
PubMed
Google Scholar
Stone, W. L., Ousley, O. Y., Yoder, P. J., Hogan, K. L., & Hepburn, S. L. (1997). Nonverbal communication in two-and three-year-old children with autism. Journal of Autism and Developmental Disorders, 27(6), 677–696. doi:10.1023/A:1025854816091.
Article
PubMed
Google Scholar
Stone, W. L., & Yoder, P. J. (2001). Predicting spoken language level in children with autism spectrum disorders. Autism: The International Journal of Research and Practice, 5(4), 341–361. doi:10.1177/1362361301005004002.
Article
Google Scholar
Tager-Flusberg, H., & Kasari, C. (2013). Minimally verbal school-aged children with autism spectrum disorder: The neglected end of the spectrum. Autism Research, 6(6), 468–478. doi:10.1002/aur.1329.
Article
PubMed
Google Scholar
Tamis-LeMonda, C. S., Bornstein, M. H., & Baumwell, L. (2001). Maternal responsiveness and children’s achievement of language milestones. Child Development, 72(3), 748–767. doi:10.1111/1467-8624.00313.
Article
PubMed
Google Scholar
Tamis-LeMonda, C. S., Bornstein, M. H., Baumwell, L., & Melstein Damast, A. (1996). Responsive parenting in the second year: Specific influences on children’s language and play. Early Development and Parenting, 5(4), 173–183. doi:10.1002/(SICI)1099-0917(199612)5:4<173::AID-EDP131>3.0.CO;2-V.
Article
Google Scholar
Tapp, J. (2003). ProcoderDV. Nashville, TN: Vanderbilt Kennedy Center.
Google Scholar
Tapp, J. T., & Yoder, P. J. (2000). Playcoder: Aiding the coding of play in toddlers. Software for Windows. Vanderbilt University: Jon.Tapp@vanderbilt.edu.
Tomasello, M., & Farrar, M. J. (1986). Joint attention and early language. Child development, 57(6), 1454–1463. doi:10.2307/1130423.
Article
PubMed
Google Scholar
Uzgiris, I. C. (1976). Organizations of sensorimotor intelligence. In M. Lewis (Ed.), Origins of intelligence: Infancy and early childhood (123–163). New York: Plenum. doi:10.1007/978-1-4684-6961-5_5.
Chapter
Google Scholar
Vanvuchelen, M., Roeyers, H., & De Weerdt, W. (2011). Objectivity and stability of the preschool and imitation and praxis scale. The American Journal of Occupational Therapy, 65, 569–577. doi:10.5014/ajot.2010.ajot00000414.
Article
PubMed
Google Scholar
Weisler, A., & McCall, R. R. (1976). Exploration and play: Resume and redirection. The American Psychologist, 31(7), 492–508. doi:10.1037/0003-066X.31.7.492.
Article
Google Scholar
Wetherby, A. M., Cain, D. H., Yonclas, D. G., & Walker, V. G. (1988). Analysis of intentional communication of normal children from the prelinguistic to the multiword stage. Journal of Speech, Language, and Hearing Research, 31(2), 240–252. doi:10.1044/jshr.3102.240.
Article
Google Scholar
Wetherby, A. M., & Prizant, B. M. (2002). Communication and symbolic behavior scales: Developmental profile. Baltimore: Paul H. Brookes.
Google Scholar
Woynaroski, T., Yoder, P. J., Fey, M. E., & Warren, S. F. (2014). A transactional model of spoken vocabulary variation in toddlers with intellectual disabilities. Journal of Speech, Language, and Hearing Research, 57(5), 1754–1763. doi:10.1044/2014_JSLHR-L-13-0252.
Article
PubMed
PubMed Central
Google Scholar
Yates, B. T., & Taub, J. (2003). Assessing the costs, benefits, cost-effectiveness, and cost benefit of psychological assessment: We should, we can, and here’s how. Psychological Assessment, 15(4), 478–495. doi:10.1037/1040-3590.15.4.478.
Article
PubMed
Google Scholar
Yoder, P., Watson, L. R., & Lambert, W. (2015). Value-added predictors of expressive and receptive language growth in initially nonverbal preschoolers with autism spectrum disorders. Journal of Autism and Developmental Disorders, 45(5), 1254–1270. doi:10.1007/s10803-014-2286-4.
Article
PubMed
PubMed Central
Google Scholar
Yoder, P. J. (2006). Predicting lexical density growth rate in young children with autism spectrum disorders. American Journal of Speech-Language Pathology, 15(4), 378–388. doi:10.1044/1058-0360(2006/035).
Article
PubMed
Google Scholar