Seguin, C., Pelletier, L. G. & Hunsley, J. (1998). Toward a model of environmental activism. Environment and Behavior, 30, 5, 628-652.

Werner, C. M. & Makela, E. (1998). Motivations and behaviors that support recycling. Journal of Environmental Psychology, 18, 4, 373-386.

Klineberg, S. L., McKeever, M. & Rothenbach, B. (1998). Demographic predictors of environmental concern: It does make a difference how it's measured. Social Science Quarterly, 79, 4, 734-753.

Riechard, D. E. & Peterson, S. J. (1998). Perception of environmental risk related to gender, community socioeconomic setting, age, and locus of control. Journal of Environmental Education, 30, 1, 11-19.

Schindler, F. H. (1999). Development of the survey of environmental issue attitudes. Journal of Environmental Education, 30, 3, 12-16.

Bradley, J.C., Waliczek, T. M. & Zajicek, J. M. (1999). Relationship between environmental knowledge and environmental attitude of high school students. Journal of Environmental Education, 30, 3, 17-21.

Scott, W. & Oulton, C. (1999). Environmental education: Arguing the case for multiple approaches. Educational Studies, 25, 1, 89-97.

Tarrant, M. A. & Green, G. T. (1999). Outdoor recreation and the predictive validity of environmental attitudes. Leisure Sciences, 21, 1, 17-30.

Watson, R. K., Murphy, M. H., Kilfoyle, F. E. & Moore, S. M. (1999). An opportunistic field experiment in community water conservation. Population and Environment: A Journal of Interdisciplinary Studies, 20, 6, 545-560.

Lee, J. A. & Holden, S. J. S. (1999). Understanding the determinants of environmentally conscious behavior. Psychology and Marketing, 16, 5, 373-392.