“…This is not surprising and a common finding in the literature (Cohn, Horgas, & Marsiske, 1990;McCallion, Toseland, Lacey et al, 1999). In most studies, including follow-ups, no long-term effects could be confirmed (Campbell, Knight, Benson et al, 1991;Maxfield, Lewis, & Cannon, 1996). Therefore our results are encouraging and support the concept and materials used in our approach.…”