105 The Effects of Multimodal Behaviors from Parents on Children's Sustained Attention: A Dual Eye-Tracking Study in Naturalistic Child-Parent Social Interaction
J. R. Yurkovic G. Lisandrelli C. Suarez-Rivera R. Shaffer K. Dominick E. Pedapati C. A. Erickson C. Yu D. P. Kennedy

106 Associations between the Home Language Environment, Maternal Education, and Naturalistic Response to Joint Attention in Infants at High and Low Familial Risk for ASD
I. Stallworthy M. Swanson S. R. Dager A. Estes H. C. Hazlett R. T. Schultz J. Piven J. T. Elison K. Botteron

107 Parent Reported Regression in Autism Spectrum Disorder: Characteristics, Early Development and Later Outcomes.
S. Boterberg R. Van Coster H. Roeyers

To Lose or Not to Lose: Developmental Pathways to Regression in Rett Syndrome (Withdrawn)
P. B. Marschik F. B. Pokorny K. D. Bartl-Pokorny D. Zhang L. Poustka C. Einspieler

109 Loss of Skills in Genetic Conditions Associated with ASD: Findings from the Developmental Synaptopathies Consortium.
A. Thurm L. Soorya C. Farmer A. Kolevzon J. Buxbaum E. Berry-Kravis C. M. Powell J. A. Bernstein C. Eng D. A. Krueger M. Sahin

110 2-Year-Olds with Autism Spectrum Disorder Direct a Smaller Proportion of Vocalizations Toward Others
L. D. Yankowitz S. Plate J. Parish-Morris S. Gregory N. Park A. Song L. A. Wang N. Marrus M. Swanson S. S. Meera J. Pandey J. C. Chappell L. Flake T. St. John H. C. Hazlett K. Botteron J. N. Constantino S. R. Dager L. Zwaigenbaum J. Piven R. T. Schultz

111 A Behavioral-Physiological Approach to Characterizing Emotion in Infants at Risk for Autism Spectrum Disorder
S. Raza L. A. Sacrey V. Armstrong A. Kushki L. Zwaigenbaum S. E. Bryson J. A. Brian I. M. Smith P. Szatmari T. Vaillancourt N. Garon L. A. Schmidt

112 A Novel Measure for Quantifying Infant Engagement during Social Interactions with Their Caregivers
Z. M. Ammar A. Klin W. Jones S. Shultz

113 Adaptive Functioning in ASD and Ws: Shared Profiles with Unique Correlates
T. Hamner N. R. Lee G. Vivanti

114 Age of First Concerns, Early Milestones and Eventual ASD Diagnosis: Are There Sex Differences?
C. Harrop E. J. Libsack R. Bernier M. Dapretto A. Jack J. McPartland J. Van Horn S. J. Webb K. A. Pelphrey

115 Associations between Fear and Later Anxiety and Internalizing Symptoms in Very Young Children with ASD
K. Joseph C. Nutor H. Neiderman K. Villarreal C. D. Gershman N. Powell E. Yhang F. E. Kane-Grade A. Vernetti S. Fontenelle K. K. Powell K. Chawarska S. Macari

116 Associations between Socioeconomic Status, Language Ability, and ASD Symptoms in Toddlers with Autism
L. Olson M. Kinnear T. Wang S. Reynolds B. Chen C. Ibarra T. Sugiura N. Harpster M. Apostol I. Fishman

117 Attention to Speaker's Mouth Region in Toddlers Predict Language and Autism Severity Levels in Preschool Aged Children
K. Villarreal C. D. Gershman N. Powell H. Neiderman K. Joseph E. Yhang F. Shic Q. Wang S. Macari M. Lyons K. Chawarska C. Nutor

118 Attenuated Attentional and Behavioral Vigilance Towards Nonsocial Threats in Preschoolers with Autism Spectrum Disorder
C. D. Ramsey E. Hilton G. Greco C. D. Gershman K. Joseph H. Neiderman C. Nutor N. Powell K. Villarreal E. Yhang S. Fontenelle K. K. Powell T. Tsang S. Macari K. Chawarska A. Vernetti

119 Atypical Physiological Responses to Emotion-Eliciting Challenges in Preschoolers with ASD
A. Vernetti N. Powell C. D. Ramsey K. Villarreal F. E. Kane-Grade H. Neiderman K. Joseph C. D. Gershman C. Nutor E. Yhang S. Fontenelle K. K. Powell T. Tsang F. Shic M. S. Goodwin S. Macari K. Chawarska

120 Autism Adversely Affects Toddlers’ Joint Engagement with Sounds, Especially Speech
L. B. Adamson R. Bakeman D. L. Robins K. Suma

121 Autism Symptom Development from 6 to 18 Months of Age in a Prospective High-Risk Cohort: Findings from the Autism Observation Scale for Infants
L. Zwaigenbaum S. E. Bryson J. A. Brian I. M. Smith L. A. Sacrey V. Armstrong W. Roberts P. Szatmari T. Vaillancourt C. Roncadin N. Garon

122 Autism and Prematurity: Sharp Increase in Risk Correlates with Shorter Preganancy
L. V. Gabis L. Allen O. Leon Attia S. Shefer

123 Caregiver-Infant Tactile Communication in Infants at-Risk for Autism Spectrum Disorder
G. Kadlaskar B. Keehn A. Seidl H. Tager-Flusberg C. A. Nelson

124 Characterizing Adaptive Behavior in Young Children with Autism: Exploring the Gap between IQ and Adaptive Behavior
J. Hooker C. Nottke A. Wetherby

Cumulative Risk of the Oxytocin Receptor Gene Interacts with Prenatal Exposure to Oxytocin-Receptor Antagonist to Predict Children’s Social Communication Development (Withdrawn)
E. Friedlander N. Yirmiya E. Laiba A. Harel-Gadassi M. Yaari O. Feldstein D. Mankuta S. Israel

Developmental Surveillance Versus Clinical Referral: A Longitudinal Study of Children with Autism Spectrum Disorder (ASD) Diagnosed at 2-Years Via Different Referral Systems (Withdrawn)
C. Dissanayake F. Peel J. Barbaro

127 Developmental Trajectory of Selective Attention to a Talking Face in Infants at-Risk for ASD
Y. Minagawa M. Hata Y. Hakuno E. Yamamoto K. Abe

128 Differences in Temperament between Children with Autism Spectrum Disorder and Typical Development in the Study to Explore Early Development
B. Barger E. Moody S. Rosenberg L. Wiggins

129 Early Behavioral Indicators of Optimality of Developmental Outcome in an ASD Risk-Enriched Sample
R. Landa M. Tahseen

130 Early Developmental Characteristics of Children with ASD in SPARK
L. Green Snyder P. Feliciano E. Brooks A. Daniels W. K. Chung