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. Author manuscript; available in PMC: 2010 Feb 23.
Published in final edited form as: Am J Ment Retard. 2008 Sep;113(5):387–402. doi: 10.1352/2008.113:387-402

Table 1.

Means and SDs of Study Variables by Time

Time/Variable Mean SD
Time 2
 Praise 2.14 1.75
 Warmth 3.13 1.06
 Relationship quality 23.67 3.44
 SIB-Ra
   Externalizing 104.98 9.79
   Internalizing 113.37 9.55
   Asocial 110.50 11.39
 ADI-Rb
   Repetitive Behaviors 4.66 2.09
   Social Reciprocity 14.79 6.12
   Communication 4.69 2.59
Time 3
 Praise 1.95 1.79
 Warmth 3.32 1.05
 Relationship quality 23.59 3.46
 SIB-R
   Externalizing 106.09 11.41
   Internalizing 113.20 10.11
   Asocial 111.11 12.16
 ADI-R
   Repetitive Behaviors 4.62 2.30
   Social Reciprocity 14.01 6.03
   Communication 4.56 2.54
Gender .77 .43
Mental retardation status .58 .50
a

Scales of Independent Behavior-Revised.

b

Autism Diagnostic Interview-Revised.