“…The first two instruments were integrated in only a few studies, GCOS ( n = 5, Breitborde et al, ; Simoneau & Bergeron, ; Strauss & Ryan, ; Twemlow et al, ; Williams et al, ) and OHS ( n = 2, Samson & Antonelli, ; Terrill et al, ), respectively. The FS (Diener et al, ) was used in seven investigations: two of them involved patients with mental health problems (Barrington & Shakespeare‐Finch, ; de Manincor et al, ) and five individuals with medical conditions (Baker et al, ; Gimpel et al, ; Lyons et al, ; Robertson et al, ; Strober, ). MHC was the most extensively used instrument ( n = 14, Bohlmeijer et al, ; Borja & Callahan, ; Callahan et al, ; Fledderus, Bohlmeijer, & Pieterse, ; Fledderus et al, ; Fledderus, Bohlmeijer, Smit et al, ; Langeland et al, ; Maré et al, ; McGaffin et al, ; Salekin et al, ; Timmerman et al, ; Trompetter et al, ; Walker‐Williams et al, ; Walker & Lampropoulos, ).…”