Bibliographical noteFunding Information:
This work was supported by NIH grant HD RO1-034061. I thank Dennis Molfese, editor of Developmental Neuropsychology, for the invitation to guest edit this special issue and for his support throughout the process. I am indebted to each of the contributors for their research papers and for their participation in the peer review process. I also acknowledge Daniel B. Berch for providing an insightful commentary, and the following individuals who reviewed some of the contributions: Shane Allua, Mark Ashcraft, Julie Booth, Lisa Feigensen, Laurie Hanich, Nancy Jordan, Marion Porath, and Andrew Zabel.