Table 1.

Demographics and behavioural test scores for all participants. Data are shown for all individuals and the median scores were calculated for the SLI, SIB and TYP groups separately.

Scores are standard scores (mean 100 ± 15) unless otherwise indicated.

Shaded and bolded group medians indicate a significantly higher median for the TYP or SIB group relative to the SLI group (Mann–Whitney U test, p < 0.015 using B–H method FDR; (Narum, 2006).

^aNumber of actions demonstrated with the right hand (out of a maximum of 10).

^bScores for the General Communication Composite obtained with the age appropriate Communication Checklist. Scores greater than 58 are considered normal.

^cScores represent percentile categorisations: 1 = <2nd, 2 = 2nd–10th, 3 = 10–25th, 4 = 25–75th, 5 = >75th.