Table 1.

Demographic and descriptive information from the three talker groups

	All participants			fMRI subgroup
	Early	On-time	Late	Early	On-time	Late
Male (n)	23	49	26	7	8	8
Female (n)	26	40	10	9	8	8
Mean age tested (years;months)	8;1	8;2	7;11	8;5	8;6	8;9
Median reported age speaking 2–3 word sentences (years)	1.2	1.5	2.5	1.25	1.5	2.5
Percent received speech therapy	9%	12%	67%	18%	18%	56%
Percent diagnosed dyslexic by school or clinic	7%	4%	30%	6%	6%	25%

Data based on parent report. Not all parents provided responses to all questions.