“…Three instruments are coding responses to scenarios, vignettes or simulated patients [20,32,39,40], and did not meet criterion 2. Two instruments measure through client opinion [22,37], and not through observations (criterion 3), and three instruments collect information with a low level of detail [21,23,36] (criterion 4). Finally, one instrument incorporates an other instrument (the MITI) to measure the MI-elements [35].…”