“…The most frequently used instrument was the MHC (Keyes, , , ), which was applied in 10 studies (Bohlmeijer, Lamers, & Fledderus, ; Borja & Callahan, ; Callahan, Borja, Herbert, Maxwell, & Ruggero, ; Fledderus, Bohlmeijer, & Pieterse, ; Fledderus, Bohlmeijer, Pieterse, & Schreurs, ; Fledderus, Bohlmeijer, Smit, & Westerhof, ; McGaffin, Deane, Kelly, & Ciarrochi, ; Salekin, Tippey, & Allen, ; Walker & Lampropoulos, ; Walker‐Williams, van Eeden, & van der Merwe, ). All studies, except one that used a 12‐item version labeled positive emotions – CDS (Salekin et al, ), used the MHC Short Form consisting of 14 items (Bohlmeijer et al, ; Borja & Callahan, ; Callahan et al, ; Fledderus, Bohlmeijer, Smit et al, ; Fledderus, Bohlmeijer, & Pieterse, ; Fledderus et al, ; McGaffin et al, ; Walker & Lampropoulos, ; Walker‐Williams et al, ). These studies were performed in the United States ( n = 4; Borja & Callahan, ; Callahan et al, ; Salekin et al, ; Walker & Lampropoulos, ), South Africa ( n = 1; Walker‐Williams et al, ), the Netherlands ( n = 4; Bohlmeijer et al, ; Fledderus, Bohlmeijer, & Pieterse, ; Fledderus et al, ; Fledderus, Bohlmeijer, Smit et al, ), and Australia ( n = 1; McGaffin et al, ).…”