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Previous research has generally not found a strong relationship between participation in outdoor recreation and environmental concern. Research has suggested, however, that the motivation underlying recreation can mediate this relationship for some nature-based recreation groups. We hypothesized that the motivation underlying participation in birding mediates the participation–environmental concern relationship. We collected data via mail-back surveys from 529 American Birding Association members. Using structural modeling, we compared a direct effects model with partial and full mediation models with motivation variables as the mediators. The partial mediation model was weakly supported for two out of three motivation variables. Fit indices showed all models to have less than adequate fit. The results suggested that participation may not lead to environmental concern and that other variables, including motivation, may be more influential. 相似文献
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Changes in turnover of cerebral norepinephrine, as measured after intracisternal administration of the H(3) amine, have been studied in rats during selective paradoxical sleep deprivation and its following rebound. Experiments were performed under neurophysiological control. A marked increase of turnover of norepinephrine is associated with the augmentation of paradoxical sleep characteristic of the rebound period. 相似文献
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