Recent research has documented systematic individual differences in early lexical
development. The current study investigated the relation ship of these differences to …

During the first two years of human life a common neural substrate (roughly Broca's area)
underlies the hierarchical organization of elements in the development of speech as well as …

Our understanding of Agency is, in part, the result of domain-specific learning. The nature of
this domain-specific learning needs to be understood in relation to the organization of …

A descriptive taxonomy, the pragmatic protocol, was developed for this study. The protocol
consists of 30 pragmatic parameters of language. The purpose of the study was to test the …

The transition from slow to rapid word-learning was examined in a longitudinal study of 18
children. Beginning at age 1; 2, mothers kept a diary of children's words. Diary entries were …

We examined the ontogeny of gaze following by testing infants at 9, 10 and 11 months of
age. Infants (N= 96) watched as an adult turned her head toward a target with either open or …

2 studies are presented that document the spontaneous development by normal infants of
nonverbal gestures to symbolically represent objects, needs, states, and qualities. These …

This study examined the development of joint attention in 95 infants assessed between 9
and 18 months of age. Infants displayed significant test–retest reliability on measures of …

It is perhaps no exaggeration to suggest that all of what is intrinsically human experience is
grounded in its shared nature. Joint attention to objects and events in the world provides the …

What is the nature of human thought? A long dominant view holds that the mind is a general
problem-solving device that approaches all questions in much the same way. Chomsky's …