Since group could be shown to affect working memory, the effect of working memory change over the treatment period on social functioning outcome to follow-up was investigated
using regression.
There was no evidence of a group-dependent effect of cognition,but after excluding the interaction term there was a significant effect of cognitive change, suggesting that improvements in cognition were associated with improvements in
social behaviour.
When the effects were investigated in each group independently there was a significant effect for the therapy
group but not for the control group