“…For example, even though the majority of the studies stated the use of a quasi-experimental design, in fact the design was not a quasi-experimental one 26,29,30,[33][34][35]37,39,64 . This happens because among the identified studies were found: (i) studies without a control group 29,33,35,40 ; (ii) studies that assessed the effectiveness after the ending of the treatment (post-test design) 36,45,48 ; (iii) studies that used measures in the pre-and post-test (pre-post-test designs) 29,30,31,37,38,40 ; and (iv) studies with a non-equivalent control group 20,27,31 . Moreover, the programs without a control group did not provide a reference point in order to assess their effectiveness.…”