Which model illustrates the stages of adoption for new ideas over time?

The model that illustrates the stages of adoption for new ideas over time is diffusion theory. This theory, developed by Everett Rogers, describes how, why, and at what rate new ideas and technology spread among individuals and groups. It categorizes adopters into different segments based on their willingness to adopt an innovation, including innovators, early adopters, early majority, late majority, and laggards. This progression reflects how people move through various stages of awareness, interest, evaluation, trial, and adoption.

The usefulness of diffusion theory lies in its application across various fields, including education, health, and marketing, as it helps understand the process of social change and the factors influencing the adoption of innovations. By analyzing these stages, organizations can develop strategies to facilitate and accelerate the adoption process, thereby improving the implementation of new ideas and practices.

The other options pertain to different concepts: schema theory relates to cognitive structures used for organizing knowledge, constructivist learning theory focuses on how individuals create their understanding and knowledge of the world through experiences, and behavioral modification theory emphasizes changing behaviors through reinforcement. Each of these theories has its own distinct focus and does not specifically address the adoption process of new ideas over time.