This book "asserts that the origin and spread of languages must be examined primarily through the time-tested techniques of linguistic analysis, rather than those of evolutionary biology" and "defends traditional practices in historical linguistics while remaining open to new techniques, including computational methods" and "will appeal to readers interested in world history and world geography."
The Intentionality Model and Language Acquisition
Engagement, Effort and the Essential Tension in Development
Monographs of the Society for Research in Child Development
The Intentionality Model builds on the child's engagement in a world of persons and objects, the effort that learning language requires, and the essential tension between engagement and effort that propels language acquisition. According to this perspective, children learn language in acts of expression and interpretation; they work at acquiring language; all aspects of a child's development contribute to this process.