"...greater use of effective strategies did not explain the persistence of the grittier types" "however...the greater use of these two effective strategies did

"...greater use of effective strategies did not explain the persistence of the grittier types" "however...the greater use of these two effective strategies did not explain why these high trait self-control individuals tended to enjoy greater success at aversive challenges" So, in fact, this study identified which strategies were effective in people who were (self-reportedly) already effective at handling aversive tasks.