“…Nevertheless, it seems safe to say that across a number of studies, positive expressions of the following personality characteristics have been demonstrated to mostly contribute to positive outcomes, thus, can be called general-purpose mechanisms (cf. Friedman et al, 1995;Helson & Wink, 1987;Manners & Durkin, 2000;Peterson, Seligman, Yurko, Martin, & Friedman, 1998): Conscientiousness, extraversion, openness to experience, behavioral f lexibility, ego resilience, ego level, internal control or agency (ef ficacy) beliefs, and cognitive investment.…”