These articles require Adobe Acrobat Reader. If you do not have Adobe Acrobat Reader please go to http://www.adobe.com/products/acrobat/readstep2.html to download it.

Locomotor Development
Marin, L., Weise, I., & Adolph, K. E. (in press). Locomotor development. In L. Balter (Ed.), Parenthood in
America: An Encyclopedia. Denver, CO: ABC-CLIO.

Motor Development
Karen E Adolph, New York University, New York, USA Idell Weise, New York University, New York, USA Ludovic Marin, New York University, New York, USA