|Bogner, FX: Environmental Education: One Programme - Two Results?, Fresenius Environmental Bulletin, 13/9, 814-819 (2004)
An empirical instrument validated for adolescent participants and derived from psychometric structures was introduced to monitor two different pupil samples (N1=287, N2=169) participating in an identical outdoor education programme. Surprisingly two different outcomes resulted: The one sample reacted quite dichotomously in the expected manner, i.e. all scores in the preservational domain increased and all scores in the utilitarian domain decreased. In a contrast, the other sample intervened just with a few of the total of eight primary factor variables and remained the residual uninfected. The unexpected result is based on the pupils’ pre-test scores. Before participation the first sample scored relatively low in the preservational domain, but high in the utilitarian domain; the second sample showed quite the contrary pattern presenting a so-called ceiling or base effect.