These models are mass society , collective behavior , resource mobilization model , and the political process model . Each model brings unique alternatives to each other. McAdams believes that under this model social isolation leads to social protest. The second model McAdams looks at is collective behavior. This he defines as not specifying a particular condition.
Any severe strain can provide the necessary structural antecedent for movement emergency.
McAdams believes the more severe the strain, the more likely a social movement will occur. Strain could be defined as anything from industrialization, urbanization, or rapid rise in unemployment. There are both strengths and weaknesses to each of these classical models. The mass society does not talk of larger political context, or the impact on movements caused by environmental change, and this model tends to be too mechanistic. The collective behavior model claims that some abnormal psychological profile exists, and it does not address integration into community.