“…Calculating mean age was not possible due to the lack of individual age data in several studies (i.e., Benson et al, 1986;McPhail & Chamove, 1989;Singh et al, 2013;To & Chan, 2000). In six studies all of the participants were diagnosed with MBID (n = 46, 38%) (i.e., Lindsay et al, 1998;Singh, Wahler, Adkins, Myers, & Mindfulness Research Group, 2003;Singh et al, 2008Singh et al, , 2011Singh et al, , 2013. In three studies there were also participants with a more severe level of ID included with those with MBID.…”