Rogers described the innovation-decision process as involving 5 stages: knowledge, persuasion, decision, implementation, and confirmation. In the knowledge stage, an individual learns about an innovation. In the persuasion stage, they form attitudes toward the innovation. During decision, they decide to adopt or reject. Implementation involves putting the innovation into practice. At confirmation, they seek reinforcement of their decision. Rogers also categorized adopters as innovators, early adopters, early majority, late majority, and laggards based on their willingness to adopt innovations. Innovators are the first to adopt while laggards are the last.