. Author manuscript; available in PMC: 2011 Jan 10.

Published in final edited form as: Autism. 2009 Sep;13(5):523–538. doi: 10.1177/1362361309335716

Table 3.

Pearson’s r and Spearman’s rho correlations between ID/ED stage 9 performance and ADI/ADI–R symptom domains

Stage	Social	Communication	RIRB
Stage 8:
r	0.19	0.26	0.30
rho	0.19	0.19	0.25
Stage 9:
r	0.16	0.20	0.43^*
rho	0.27	0.30	0.44^*

p < 0.05.

Because IQ has been significantly related to restricted interests/repetitive behavior symptoms (Gabriels et al., 2005),we partialled full-scale IQ from the correlation, and the relationship was weakened but trending toward significance, r(n = 25) = 0.37, p = 0.08.