The purpose of this preliminary study is to establish a reliable and valid measure of environmental connectedness (EC) to allow for further exploration of the Swedish Outdoor Recreation in Change national survey data. The Nordic concept of friluftsliv (nature-based outdoor recreation) and the environmental psychology concept of EC are explored to provide a foundation for the research. Reliability and construct validity testing on items from the Outdoor Recreation in Change survey have been tested and have demonstrated both reliability and construct validity. A reliable and construct valid measure of EC will facilitate research into the possible relationships between EC, nature-based outdoor recreation, and environmental behavior. A better understanding of these relationships may serve to further understanding of the human relationship with nature. (Contains 2 tables.)