In the following chart (Figure 7),

In the following chart (Figure 7), the three types of design intervention, divided by intensity, are visualised along the dimensions of acceptance and effectiveness. Soft interventions involve user-initiated actions and thus have a high acceptance level. They are unlikely to lead to negative outcomes, but as their intensity is low, there is no guarantee that they will be effective. Medium interventions provide guidance for action and are generally also well accepted. However, their effectiveness is influenced by other factors, such as the design of the facility or users’ levels of competence. Medium interventions may not be as effective as forceful interventions, which can produce either the best or the worst outcomes. While forceful interventions are generally effective in changing behaviour, they are the most extreme of the three strategies and have the lowest acceptance rate.