“…In a systematic review of meta-analyses of psychological treatments for depression in all age groups (Cuijpers and Dekker, 2005), we identified six meta-analyses of psychological treatments for depression in late life (Scogin and McElreath, 1994;Koder et al, 1996;Engels and Vermey, 1997;Cuijpers, 1998;McCusker et al, 1998;Gerson et al, 1999). None of these meta-analyses, however, has focused on randomized controlled trials only, and all also included studies in which the respondents were not allocated randomly to conditions, while this is known to be the most crucial element of being sure that a treatment effect can actually be attributed to the treatment (Higgins and Green, 2005).…”