
An investigation into differences in early childhood development Variability in Early Communicative Development demonstrates that the "modal child" does not, in fact, exist. Interviews with parents of over 1,800 children reveals both typical and exceptional...

Drawing on parent's reports of more than 1,800 children, this Monograph describes in detail both typical and exceptional courses of communicative development between the ages of eight and thirty months. The authors' large dataset offers unusually specific information on...