Tables 1 (A-C).

Brief summaries of studies that involved (A) randomized controlled trials examining the effects of training on attention; (B) non-randomized, longitudinal, retreat studies examining the effects of intensive mindfulness practices on attention; and (C) non-randomized short-termstudies assessing the training effects of mindfulness programs on attention, but lacking the rigor of RCTs. For each of the studies, we have provided key study characteristics, such as the sample, details of the mindfulness group vs. the control group, engagement in home practices, and the attention-related dependent variables, classified as alerting (A), orienting (O), and executive attention (E). Each study is also rated on the five design characteristics discussed in the manuscript: 1) randomization of participants to groups; 2) inclusion of an active control group; 3) explicit attention to reduction of demand characteristics; 4) detailed discussion of content of the intervention and control groups; and 5) following of study reporting guidelines (such as CONSORT).