Discussion
The relationship between internet-enabled action and future engagement has been widely debated in popular culture. Echoing this concern, recent research has considered whether participating in internet-enabled action facilitates or inhibits engagement in traditional and more demanding forms of collective action (e.g., Vaccari et al., 2015). However, limited research has tested the causal effects of online participation (for an exception see Schumann & Klein, 2015) or how online participation for one cause affects engagement across different social issues. In this study, we examined how internet-enabled action affects future action for other causes, extending previous literature by manipulating action efficacy perceptions and measuring subsequent collective action relating to different social issues. Findings indicate that participating in internet-enabled collective action can indeed affect longer-term, crossdomain collective action. However, rather than a universal facilitation or inhibition effect, the relationship between internet-enabled action and higher-threshold engagement is sensitive to prior activism experience and perceptions about the efficacy of the action taken. Replicating previous literature (Schumann & Klein, 2015), we found that participating in internet-enabled action reduced willingness to engage in higher-threshold action for the same cause. This finding is consistent with the slacktivism hypothesis which suggests a demobilising role for online participation (e.g., Morozov, 2011). However, our results also extend this literature by demonstrating that internet-enabled action can in fact facilitate future collective action under specific conditions. In the longer-term, when participants had the opportunity to engage in action for other causes outside of the experimental setting, no detrimental effect of online participation occurred. On the contrary, taking internet-enabled action actually predicted greater levels of longer-term, cross-domain collective action when participation led to greater participative efficacy beliefs.