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None of the children showed overlap that was significantly different from zero on any<br />
of the overlap measures. Pine et al argue against postulating modal auxiliaries for<br />
children of this age range.<br />
Table 4. Proportion of verbs that occurred with both auxiliaries to verbs<br />
that occurred with either (Pine, Lieven and Rowland 1998)<br />
Subjects can/do can/be can/have do/be do/have be/have<br />
Rita 2/10 1/10 1/10 1/4 1/4 1/3<br />
Joey 0/10 0/15 1/5 0/17 0/8 0/13<br />
Julie 0/8 0/9 1/9 0/7 0/8 2/7<br />
Jean 2/20 3/19 0/14 4/22* 1/17 2/16<br />
Ricky 1/9 0/7 1/6 0/9 1/8 0/6<br />
Eva 1/11 1/9 0/6 2/14 0/12 1/9<br />
Helen 0/4 1/3 0/4 0/6 1/5 0/6<br />
Carl 0/3 0/7 0/3 1/5 1/1 1/5<br />
John 0/3 0/2 0/5 0/1 0/4 0/3<br />
Simon 0/7 1/7 2/5 0/7 0/6 1/6<br />
Olga 0/2 0/2 0/2 0/2 0/2 0/2<br />
Laura 0/1 0/3 0/1 0/4 0/2 1/3<br />
*Indicates an overlap score significantly different from zero at p