Editing Collective action (section)

===Perceived efficacy===
Moving beyond RDT, scholars suggested that in addition to a sense of injustice, people must also have the objective, structural resources necessary to [[Resource mobilization|mobilize change]] through social protest. An important psychological development saw this research instead directed towards subjective expectations and beliefs that unified effort (collective action) is a viable option for achieving group-based goals – this is referred to as perceived collective efficacy. Empirically, collective efficacy is shown to causally affect collective action among a number of populations across varied contexts.<ref name="van Zomeren, Postmes, & Spears (2008)"/>