Intervention mothers reported significant improvements in children 's externalizing behaviours ( = -2.8 , P = 0.002 ) , communication ( = 4.3 , P = 0.025 ) and daily living skills ( = 5.9 , P = 0.024 ) , although improvement in internalizing behaviours and socialization was not significant ( P = 0.061 and 0.052 , respectively ) .