Social Movement Identity: Validating a Measure of Identification with the Environmental Movement

Objective. We offer an empirical measure of “social movement identity” vis‐à‐vis the environmental movement. Our measure of environmental movement identity complements existing efforts to measure the ambiguous concept of “environmental identity.” Methods. We utilize data from a 2000 Gallup Poll of 1,004 adults to examine relationships between our measure of environmental movement identity and self‐reported membership in environmental organizations, assessments of the environmental movement, and self‐reported pro‐environmental behaviors. Results. The measure appears to have face validity, and our results suggest it also has construct and predictive validity since it is related to environmental organization memberships, assessments of the environmental movement, and self‐reported pro‐environmental behaviors—even when controlling for relevant sociopolitical characteristics. Conclusions. The measure is useful for analyses of the environmental movement, can be adapted for research on other movements, and can help social movement analysts respond to calls to investigate linkages between public opinion and movement dynamics.