Subjects were divided into the following groups : ( i ) the control-risperidone group ( CR group ) ( n = 13 ) ; ( ii ) the rehabilitation-risperidone group ( RR group ) ( n = 9 ) ; ( iii ) the control-aripiprazole group ( CA group ) ( n = 10 ) ; and ( iv ) the rehabilitation-aripiprazole group ( RA group ) ( n = 11 ) .