Autism spectrum disorders in infants and toddlers: an introduction / Fred R. Volkmar, Katarzyna Chawarska, and Ami Klin -- Diagnostic assessment / Somer L. Bishop ... [et al.] -- Assessment of cognitive and adaptive skills / Katarzyna Chawarska and Karen Bearss -- Communication development and assessment / Rhea Paul -- Understanding, assessing, and treating sensory-motor issues / Grace T. Baranek, Linn Wakeford, and Fabian J. David -- Case studies of infants first evaluated in the second year of life / Ami Klin ... [et al.] -- Developmental approaches to treatment / Amy M. Wetherby and Juliann Woods -- Naturalistic behavioral approaches to treatment / Lynn Kern Koegel ... [et al.] -- Controversial treatments / Tristram Smith and Jennifer Wick -- Medical issues / Fred R. Volkmar ... [et al.] -- Supporting families / Karyn Bailey -- Opportunities for research: concepts and future directions / Ami Klin, Katarzyna Chawarska, and Fred R.Volkmar.