SSTP with ACT was associated with decreased behavioral problems ( ECBI Intensity mean difference [ MD ] = 24.12 , confidence interval [ CI ] 10.22 to 38.03 , P = .003 ; ECBI problem MD = 8.30 , CI 4.63 to 11.97 , P < .0001 ) including hyperactivity ( SDQ MD = 1.66 , CI 0.55 to 2.77 , P = .004 ) , as well as decreased parental overreactivity ( PS MD = 0.60 , CI 0.16 to 1.04 , P = .008 ) and verbosity ( PS MD = 0.68 , CI 0.17 to 1.20 , P = .01 ) .